class string

Represents text as a sequence of UTF-16 code units.

Initializes a new instance of the class to the value indicated by a specified pointer to an array of Unicode characters.

• value A pointer to a null-terminated array of Unicode characters.

Initializes a new instance of the class to the value indicated by a specified pointer to an array of Unicode characters, a starting character position within that array, and a length.

• value A pointer to an array of Unicode characters.
• startIndex The starting position within .
• length The number of characters within to use.

Initializes a new instance of the class to the value indicated by a specified Unicode character repeated a specified number of times.

• c A Unicode character.
• count The number of times occurs.

Initializes a new instance of the class to the value indicated by an array of Unicode characters.

• value An array of Unicode characters.

Initializes a new instance of the class to the value indicated by an array of Unicode characters, a starting character position within that array, and a length.

• value An array of Unicode characters.
• startIndex The starting position within .
• length The number of characters within to use.

Initializes a new instance of the class to the value indicated by a pointer to an array of 8-bit signed integers.

• value A pointer to a null-terminated array of 8-bit signed integers. The integers are interpreted using the current system code page encoding (that is, the encoding specified by ).

Initializes a new instance of the class to the value indicated by a specified pointer to an array of 8-bit signed integers, a starting position within that array, and a length.

• value A pointer to an array of 8-bit signed integers. The integers are interpreted using the current system code page encoding (that is, the encoding specified by ).
• startIndex The starting position within .
• length The number of characters within to use.

Initializes a new instance of the class to the value indicated by a specified pointer to an array of 8-bit signed integers, a starting position within that array, a length, and an object.

• value A pointer to an array of 8-bit signed integers.
• startIndex The starting position within .
• length The number of characters within to use.
• enc An object that specifies how the array referenced by is encoded. If is , ANSI encoding is assumed.

Compares substrings of two specified objects and returns an integer that indicates their relative position in the sort order.

• strA The first string to use in the comparison.
• indexA The position of the substring within .
• strB The second string to use in the comparison.
• indexB The position of the substring within .
• length The maximum number of characters in the substrings to compare.
• Returns A 32-bit signed integer indicating the lexical relationship between the two comparands. Value Condition Less than zero The substring in precedes the substring in in the sort order. Zero The substrings occur in the same position in the sort order, or is zero. Greater than zero The substring in follows the substring in in the sort order.

Compares substrings of two specified objects, ignoring or honoring their case, and returns an integer that indicates their relative position in the sort order.

• strA The first string to use in the comparison.
• indexA The position of the substring within .
• strB The second string to use in the comparison.
• indexB The position of the substring within .
• length The maximum number of characters in the substrings to compare.
• ignoreCase to ignore case during the comparison; otherwise, .
• Returns A 32-bit signed integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero The substring in precedes the substring in in the sort order. Zero The substrings occur in the same position in the sort order, or is zero. Greater than zero The substring in follows the substring in in the sort order.

Compares substrings of two specified objects, ignoring or honoring their case and using culture-specific information to influence the comparison, and returns an integer that indicates their relative position in the sort order.

• strA The first string to use in the comparison.
• indexA The position of the substring within .
• strB The second string to use in the comparison.
• indexB The position of the substring within .
• length The maximum number of characters in the substrings to compare.
• ignoreCase to ignore case during the comparison; otherwise, .
• culture An object that supplies culture-specific comparison information.
• Returns An integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero The substring in precedes the substring in in the sort order. Zero The substrings occur in the same position in the sort order, or is zero. Greater than zero The substring in follows the substring in in the sort order.

Compares substrings of two specified objects using the specified comparison options and culture-specific information to influence the comparison, and returns an integer that indicates the relationship of the two substrings to each other in the sort order.

• strA The first string to use in the comparison.
• indexA The starting position of the substring within .
• strB The second string to use in the comparison.
• indexB The starting position of the substring within .
• length The maximum number of characters in the substrings to compare.
• culture An object that supplies culture-specific comparison information.
• options Options to use when performing the comparison (such as ignoring case or symbols).
• Returns An integer that indicates the lexical relationship between the two substrings, as shown in the following table. Value Condition Less than zero The substring in precedes the substring in in the sort order. Zero The substrings occur in the same position in the sort order, or is zero. Greater than zero The substring in follows the substring in in the sort order.

Compares substrings of two specified objects using the specified rules, and returns an integer that indicates their relative position in the sort order.

• strA The first string to use in the comparison.
• indexA The position of the substring within .
• strB The second string to use in the comparison.
• indexB The position of the substring within .
• length The maximum number of characters in the substrings to compare.
• comparisonType One of the enumeration values that specifies the rules to use in the comparison.
• Returns A 32-bit signed integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero The substring in precedes the substring in in the sort order. Zero The substrings occur in the same position in the sort order, or the parameter is zero. Greater than zero The substring in follows the substring in in the sort order.

Compares two specified objects and returns an integer that indicates their relative position in the sort order.

• strA The first string to compare.
• strB The second string to compare.
• Returns A 32-bit signed integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero precedes in the sort order. Zero occurs in the same position as in the sort order. Greater than zero follows in the sort order.

Compares two specified objects, ignoring or honoring their case, and returns an integer that indicates their relative position in the sort order.

• strA The first string to compare.
• strB The second string to compare.
• ignoreCase to ignore case during the comparison; otherwise, .
• Returns A 32-bit signed integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero precedes in the sort order. Zero occurs in the same position as in the sort order. Greater than zero follows in the sort order.

Compares two specified objects, ignoring or honoring their case, and using culture-specific information to influence the comparison, and returns an integer that indicates their relative position in the sort order.

• strA The first string to compare.
• strB The second string to compare.
• ignoreCase to ignore case during the comparison; otherwise, .
• culture An object that supplies culture-specific comparison information.
• Returns A 32-bit signed integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero precedes in the sort order. Zero occurs in the same position as in the sort order. Greater than zero follows in the sort order.

Compares two specified objects using the specified comparison options and culture-specific information to influence the comparison, and returns an integer that indicates the relationship of the two strings to each other in the sort order.

• strA The first string to compare.
• strB The second string to compare.
• culture The culture that supplies culture-specific comparison information.
• options Options to use when performing the comparison (such as ignoring case or symbols).
• Returns A 32-bit signed integer that indicates the lexical relationship between and , as shown in the following table Value Condition Less than zero precedes in the sort order. Zero occurs in the same position as in the sort order. Greater than zero follows in the sort order.

Compares two specified objects using the specified rules, and returns an integer that indicates their relative position in the sort order.

• strA The first string to compare.
• strB The second string to compare.
• comparisonType One of the enumeration values that specifies the rules to use in the comparison.
• Returns A 32-bit signed integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero precedes in the sort order. Zero is in the same position as in the sort order. Greater than zero follows in the sort order.

Compares substrings of two specified objects by evaluating the numeric values of the corresponding objects in each substring.

• strA The first string to use in the comparison.
• indexA The starting index of the substring in .
• strB The second string to use in the comparison.
• indexB The starting index of the substring in .
• length The maximum number of characters in the substrings to compare.
• Returns A 32-bit signed integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero The substring in is less than the substring in . Zero The substrings are equal, or is zero. Greater than zero The substring in is greater than the substring in .

Compares two specified objects by evaluating the numeric values of the corresponding objects in each string.

• strA The first string to compare.
• strB The second string to compare.
• Returns An integer that indicates the lexical relationship between the two comparands. Value Condition Less than zero is less than . Zero and are equal. Greater than zero is greater than .

Compares this instance with a specified and indicates whether this instance precedes, follows, or appears in the same position in the sort order as the specified .

• value An object that evaluates to a .
• Returns A 32-bit signed integer that indicates whether this instance precedes, follows, or appears in the same position in the sort order as the parameter. Value Condition Less than zero This instance precedes . Zero This instance has the same position in the sort order as . Greater than zero This instance follows . -or- is .

Compares this instance with a specified object and indicates whether this instance precedes, follows, or appears in the same position in the sort order as the specified string.

• strB The string to compare with this instance.
• Returns A 32-bit signed integer that indicates whether this instance precedes, follows, or appears in the same position in the sort order as the parameter. Value Condition Less than zero This instance precedes . Zero This instance has the same position in the sort order as . Greater than zero This instance follows . -or- is .

Creates the string representation of a specified object.

• arg0 The object to represent, or .
• Returns The string representation of the value of , or if is .

Concatenates the string representations of two specified objects.

• arg0 The first object to concatenate.
• arg1 The second object to concatenate.
• Returns The concatenated string representations of the values of and .

Concatenates the string representations of three specified objects.

• arg0 The first object to concatenate.
• arg1 The second object to concatenate.
• arg2 The third object to concatenate.
• Returns The concatenated string representations of the values of , , and .

Concatenates the string representations of the elements in a specified array.

• args An object array that contains the elements to concatenate.
• Returns The concatenated string representations of the values of the elements in .

Concatenates two specified instances of .

• str0 The first string to concatenate.
• str1 The second string to concatenate.
• Returns The concatenation of and .

Concatenates three specified instances of .

• str0 The first string to concatenate.
• str1 The second string to concatenate.
• str2 The third string to concatenate.
• Returns The concatenation of , , and .

Concatenates four specified instances of .

• str0 The first string to concatenate.
• str1 The second string to concatenate.
• str2 The third string to concatenate.
• str3 The fourth string to concatenate.
• Returns The concatenation of , , , and .

Concatenates the elements of a specified array.

• values An array of string instances.
• Returns The concatenated elements of .

Returns a value indicating whether a specified character occurs within this string.

• value The character to seek.
• Returns if the parameter occurs within this string; otherwise, .

Returns a value indicating whether a specified character occurs within this string, using the specified comparison rules.

• value The character to seek.
• comparisonType One of the enumeration values that specifies the rules to use in the comparison.
• Returns if the parameter occurs within this string; otherwise, .

Returns a value indicating whether a specified substring occurs within this string.

• value The string to seek.
• Returns if the parameter occurs within this string, or if is the empty string (""); otherwise, .

Returns a value indicating whether a specified string occurs within this string, using the specified comparison rules.

• value The string to seek.
• comparisonType One of the enumeration values that specifies the rules to use in the comparison.
• Returns if the parameter occurs within this string, or if is the empty string (""); otherwise, .

Creates a new instance of with the same value as a specified .

• str The string to copy.
• Returns A new string with the same value as .

Copies a specified number of characters from a specified position in this instance to a specified position in an array of Unicode characters.

• sourceIndex The index of the first character in this instance to copy.
• destination An array of Unicode characters to which characters in this instance are copied.
• destinationIndex The index in at which the copy operation begins.
• count The number of characters in this instance to copy to .

Represents the empty string. This field is read-only.

No summary.

Determines whether the end of this string instance matches the specified string.

• value The string to compare to the substring at the end of this instance.
• Returns if matches the end of this instance; otherwise, .

Determines whether the end of this string instance matches the specified string when compared using the specified culture.

• value The string to compare to the substring at the end of this instance.
• ignoreCase to ignore case during the comparison; otherwise, .
• culture Cultural information that determines how this instance and are compared. If is , the current culture is used.
• Returns if the parameter matches the end of this string; otherwise, .

Determines whether the end of this string instance matches the specified string when compared using the specified comparison option.

• value The string to compare to the substring at the end of this instance.
• comparisonType One of the enumeration values that determines how this string and are compared.
• Returns if the parameter matches the end of this string; otherwise, .

Determines whether this instance and a specified object, which must also be a object, have the same value.

• obj The string to compare to this instance.
• Returns if is a and its value is the same as this instance; otherwise, . If is , the method returns .

Determines whether this instance and another specified object have the same value.

• value The string to compare to this instance.
• Returns if the value of the parameter is the same as the value of this instance; otherwise, . If is , the method returns .

Determines whether two specified objects have the same value.

• a The first string to compare, or .
• b The second string to compare, or .
• Returns if the value of is the same as the value of ; otherwise, . If both and are , the method returns .

Determines whether two specified objects have the same value. A parameter specifies the culture, case, and sort rules used in the comparison.

• a The first string to compare, or .
• b The second string to compare, or .
• comparisonType One of the enumeration values that specifies the rules for the comparison.
• Returns if the value of the parameter is equal to the value of the parameter; otherwise, .

Determines whether this string and a specified object have the same value. A parameter specifies the culture, case, and sort rules used in the comparison.

• value The string to compare to this instance.
• comparisonType One of the enumeration values that specifies how the strings will be compared.
• Returns if the value of the parameter is the same as this string; otherwise, .

Replaces the format item or items in a specified string with the string representation of the corresponding object. A parameter supplies culture-specific formatting information.

• provider An object that supplies culture-specific formatting information.
• format A composite format string.
• arg0 The object to format.
• Returns A copy of in which the format item or items have been replaced by the string representation of .

Replaces the format items in a string with the string representation of two specified objects. A parameter supplies culture-specific formatting information.

• provider An object that supplies culture-specific formatting information.
• format A composite format string.
• arg0 The first object to format.
• arg1 The second object to format.
• Returns A copy of in which format items are replaced by the string representations of and .

Replaces the format items in a string with the string representation of three specified objects. An parameter supplies culture-specific formatting information.

• provider An object that supplies culture-specific formatting information.
• format A composite format string.
• arg0 The first object to format.
• arg1 The second object to format.
• arg2 The third object to format.
• Returns A copy of in which the format items have been replaced by the string representations of , , and .

Replaces the format items in a string with the string representations of corresponding objects in a specified array. A parameter supplies culture-specific formatting information.

• provider An object that supplies culture-specific formatting information.
• format A composite format string.
• args An object array that contains zero or more objects to format.
• Returns A copy of in which the format items have been replaced by the string representation of the corresponding objects in .

Replaces one or more format items in a string with the string representation of a specified object.

• format A composite format string.
• arg0 The object to format.
• Returns A copy of in which any format items are replaced by the string representation of .

Replaces the format items in a string with the string representation of two specified objects.

• format A composite format string.
• arg0 The first object to format.
• arg1 The second object to format.
• Returns A copy of in which format items are replaced by the string representations of and .

Replaces the format items in a string with the string representation of three specified objects.

• format A composite format string.
• arg0 The first object to format.
• arg1 The second object to format.
• arg2 The third object to format.
• Returns A copy of in which the format items have been replaced by the string representations of , , and .

Replaces the format item in a specified string with the string representation of a corresponding object in a specified array.

• format A composite format string.
• args An object array that contains zero or more objects to format.
• Returns A copy of in which the format items have been replaced by the string representation of the corresponding objects in .

Returns the hash code for this string using the specified rules.

• comparisonType One of the enumeration values that specifies the rules to use in the comparison.
• Returns A 32-bit signed integer hash code.

Reports the zero-based index of the first occurrence of the specified Unicode character in this string.

• value A Unicode character to seek.
• Returns The zero-based index position of if that character is found, or -1 if it is not.

Reports the zero-based index of the first occurrence of the specified Unicode character in this string. The search starts at a specified character position.

• value A Unicode character to seek.
• startIndex The search starting position.
• Returns The zero-based index position of from the start of the string if that character is found, or -1 if it is not.

Reports the zero-based index of the first occurrence of the specified character in this instance. The search starts at a specified character position and examines a specified number of character positions.

• value A Unicode character to seek.
• startIndex The search starting position.
• count The number of character positions to examine.
• Returns The zero-based index position of from the start of the string if that character is found, or -1 if it is not.

Reports the zero-based index of the first occurrence of the specified Unicode character in this string. A parameter specifies the type of search to use for the specified character.

• value The character to seek.
• comparisonType An enumeration value that specifies the rules for the search.
• Returns The zero-based index of if that character is found, or -1 if it is not.

Reports the zero-based index of the first occurrence of the specified string in this instance.

• value The string to seek.
• Returns The zero-based index position of if that string is found, or -1 if it is not. If is , the return value is 0.

Reports the zero-based index of the first occurrence of the specified string in this instance. The search starts at a specified character position.

• value The string to seek.
• startIndex The search starting position.
• Returns The zero-based index position of from the start of the current instance if that string is found, or -1 if it is not. If is , the return value is .

Reports the zero-based index of the first occurrence of the specified string in this instance. The search starts at a specified character position and examines a specified number of character positions.

• value The string to seek.
• startIndex The search starting position.
• count The number of character positions to examine.
• Returns The zero-based index position of from the start of the current instance if that string is found, or -1 if it is not. If is , the return value is .

Reports the zero-based index of the first occurrence of the specified string in the current object. Parameters specify the starting search position in the current string, the number of characters in the current string to search, and the type of search to use for the specified string.

• value The string to seek.
• startIndex The search starting position.
• count The number of character positions to examine.
• comparisonType One of the enumeration values that specifies the rules for the search.
• Returns The zero-based index position of the parameter from the start of the current instance if that string is found, or -1 if it is not. If is , the return value is .

Reports the zero-based index of the first occurrence of the specified string in the current object. Parameters specify the starting search position in the current string and the type of search to use for the specified string.

• value The string to seek.
• startIndex The search starting position.
• comparisonType One of the enumeration values that specifies the rules for the search.
• Returns The zero-based index position of the parameter from the start of the current instance if that string is found, or -1 if it is not. If is , the return value is .

Reports the zero-based index of the first occurrence of the specified string in the current object. A parameter specifies the type of search to use for the specified string.

• value The string to seek.
• comparisonType One of the enumeration values that specifies the rules for the search.
• Returns The index position of the parameter if that string is found, or -1 if it is not. If is , the return value is 0.

Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters.

• anyOf A Unicode character array containing one or more characters to seek.
• Returns The zero-based index position of the first occurrence in this instance where any character in was found; -1 if no character in was found.

Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. The search starts at a specified character position.

• anyOf A Unicode character array containing one or more characters to seek.
• startIndex The search starting position.
• Returns The zero-based index position of the first occurrence in this instance where any character in was found; -1 if no character in was found.

Reports the zero-based index of the first occurrence in this instance of any character in a specified array of Unicode characters. The search starts at a specified character position and examines a specified number of character positions.

• anyOf A Unicode character array containing one or more characters to seek.
• startIndex The search starting position.
• count The number of character positions to examine.
• Returns The zero-based index position of the first occurrence in this instance where any character in was found; -1 if no character in was found.

Returns a new string in which a specified string is inserted at a specified index position in this instance.

• startIndex The zero-based index position of the insertion.
• value The string to insert.
• Returns A new string that is equivalent to this instance, but with inserted at position .

Retrieves the system's reference to the specified .

• str A string to search for in the intern pool.
• Returns The system's reference to , if it is interned; otherwise, a new reference to a string with the value of .

Retrieves a reference to a specified .

• str The string to search for in the intern pool.
• Returns A reference to if it is in the common language runtime intern pool; otherwise, .

Indicates whether this string is in the specified Unicode normalization form.

• normalizationForm A Unicode normalization form.
• Returns if this string is in the normalization form specified by the parameter; otherwise, .

Indicates whether the specified string is or an empty string ("").

• value The string to test.
• Returns if the parameter is or an empty string (""); otherwise, .

Indicates whether a specified string is , empty, or consists only of white-space characters.

• value The string to test.
• Returns if the parameter is or , or if consists exclusively of white-space characters.

No summary.

No summary.

No summary.

Concatenates the elements of an object array, using the specified separator between each element.

• separator The string to use as a separator. is included in the returned string only if has more than one element.
• values An array that contains the elements to concatenate.
• Returns A string that consists of the elements of delimited by the string. If is an empty array, the method returns .

Concatenates all the elements of a string array, using the specified separator between each element.

• separator The string to use as a separator. is included in the returned string only if has more than one element.
• value An array that contains the elements to concatenate.
• Returns A string that consists of the elements in delimited by the string. If is an empty array, the method returns .

Concatenates the specified elements of a string array, using the specified separator between each element.

• separator The string to use as a separator. is included in the returned string only if has more than one element.
• value An array that contains the elements to concatenate.
• startIndex The first element in to use.
• count The number of elements of to use.
• Returns A string that consists of the strings in delimited by the string. -or- if is zero, has no elements, or and all the elements of are .

Reports the zero-based index position of the last occurrence of a specified Unicode character within this instance.

• value The Unicode character to seek.
• Returns The zero-based index position of if that character is found, or -1 if it is not.

Reports the zero-based index position of the last occurrence of a specified Unicode character within this instance. The search starts at a specified character position and proceeds backward toward the beginning of the string.

• value The Unicode character to seek.
• startIndex The starting position of the search. The search proceeds from toward the beginning of this instance.
• Returns The zero-based index position of if that character is found, or -1 if it is not found or if the current instance equals .

Reports the zero-based index position of the last occurrence of the specified Unicode character in a substring within this instance. The search starts at a specified character position and proceeds backward toward the beginning of the string for a specified number of character positions.

• value The Unicode character to seek.
• startIndex The starting position of the search. The search proceeds from toward the beginning of this instance.
• count The number of character positions to examine.
• Returns The zero-based index position of if that character is found, or -1 if it is not found or if the current instance equals .

Reports the zero-based index position of the last occurrence of a specified string within this instance.

• value The string to seek.
• Returns The zero-based starting index position of if that string is found, or -1 if it is not. If is , the return value is the last index position in this instance.

Reports the zero-based index position of the last occurrence of a specified string within this instance. The search starts at a specified character position and proceeds backward toward the beginning of the string.

• value The string to seek.
• startIndex The search starting position. The search proceeds from toward the beginning of this instance.
• Returns The zero-based starting index position of if that string is found, or -1 if it is not found or if the current instance equals . If is , the return value is the smaller of and the last index position in this instance.

Reports the zero-based index position of the last occurrence of a specified string within this instance. The search starts at a specified character position and proceeds backward toward the beginning of the string for a specified number of character positions.

• value The string to seek.
• startIndex The search starting position. The search proceeds from toward the beginning of this instance.
• count The number of character positions to examine.
• Returns The zero-based starting index position of if that string is found, or -1 if it is not found or if the current instance equals . If is , the return value is the smaller of and the last index position in this instance.

Reports the zero-based index position of the last occurrence of a specified string within this instance. The search starts at a specified character position and proceeds backward toward the beginning of the string for the specified number of character positions. A parameter specifies the type of comparison to perform when searching for the specified string.

• value The string to seek.
• startIndex The search starting position. The search proceeds from toward the beginning of this instance.
• count The number of character positions to examine.
• comparisonType One of the enumeration values that specifies the rules for the search.
• Returns The zero-based starting index position of the parameter if that string is found, or -1 if it is not found or if the current instance equals . If is , the return value is the smaller of and the last index position in this instance.

Reports the zero-based index of the last occurrence of a specified string within the current object. The search starts at a specified character position and proceeds backward toward the beginning of the string. A parameter specifies the type of comparison to perform when searching for the specified string.

• value The string to seek.
• startIndex The search starting position. The search proceeds from toward the beginning of this instance.
• comparisonType One of the enumeration values that specifies the rules for the search.
• Returns The zero-based starting index position of the parameter if that string is found, or -1 if it is not found or if the current instance equals . If is , the return value is the smaller of and the last index position in this instance.

Reports the zero-based index of the last occurrence of a specified string within the current object. A parameter specifies the type of search to use for the specified string.

• value The string to seek.
• comparisonType One of the enumeration values that specifies the rules for the search.
• Returns The zero-based starting index position of the parameter if that string is found, or -1 if it is not. If is , the return value is the last index position in this instance.

Reports the zero-based index position of the last occurrence in this instance of one or more characters specified in a Unicode array.

• anyOf A Unicode character array containing one or more characters to seek.
• Returns The index position of the last occurrence in this instance where any character in was found; -1 if no character in was found.

Reports the zero-based index position of the last occurrence in this instance of one or more characters specified in a Unicode array. The search starts at a specified character position and proceeds backward toward the beginning of the string.

• anyOf A Unicode character array containing one or more characters to seek.
• startIndex The search starting position. The search proceeds from toward the beginning of this instance.
• Returns The index position of the last occurrence in this instance where any character in was found; -1 if no character in was found or if the current instance equals .

Reports the zero-based index position of the last occurrence in this instance of one or more characters specified in a Unicode array. The search starts at a specified character position and proceeds backward toward the beginning of the string for a specified number of character positions.

• anyOf A Unicode character array containing one or more characters to seek.
• startIndex The search starting position. The search proceeds from toward the beginning of this instance.
• count The number of character positions to examine.
• Returns The index position of the last occurrence in this instance where any character in was found; -1 if no character in was found or if the current instance equals .

Gets the number of characters in the current object.

• Returns The number of characters in the current string.

Returns a new string whose textual value is the same as this string, but whose binary representation is in the specified Unicode normalization form.

• normalizationForm A Unicode normalization form.
• Returns A new string whose textual value is the same as this string, but whose binary representation is in the normalization form specified by the parameter.

Determines whether two specified strings have the same value.

• a The first string to compare, or .
• b The second string to compare, or .
• Returns if the value of is the same as the value of ; otherwise, .

Determines whether two specified strings have different values.

• a The first string to compare, or .
• b The second string to compare, or .
• Returns if the value of is different from the value of ; otherwise, .

Returns a new string that right-aligns the characters in this instance by padding them with spaces on the left, for a specified total length.

• totalWidth The number of characters in the resulting string, equal to the number of original characters plus any additional padding characters.
• Returns A new string that is equivalent to this instance, but right-aligned and padded on the left with as many spaces as needed to create a length of . However, if is less than the length of this instance, the method returns a reference to the existing instance. If is equal to the length of this instance, the method returns a new string that is identical to this instance.

Returns a new string that right-aligns the characters in this instance by padding them on the left with a specified Unicode character, for a specified total length.

• totalWidth The number of characters in the resulting string, equal to the number of original characters plus any additional padding characters.
• paddingChar A Unicode padding character.
• Returns A new string that is equivalent to this instance, but right-aligned and padded on the left with as many characters as needed to create a length of . However, if is less than the length of this instance, the method returns a reference to the existing instance. If is equal to the length of this instance, the method returns a new string that is identical to this instance.

Returns a new string that left-aligns the characters in this string by padding them with spaces on the right, for a specified total length.

• totalWidth The number of characters in the resulting string, equal to the number of original characters plus any additional padding characters.
• Returns A new string that is equivalent to this instance, but left-aligned and padded on the right with as many spaces as needed to create a length of . However, if is less than the length of this instance, the method returns a reference to the existing instance. If is equal to the length of this instance, the method returns a new string that is identical to this instance.

Returns a new string that left-aligns the characters in this string by padding them on the right with a specified Unicode character, for a specified total length.

• totalWidth The number of characters in the resulting string, equal to the number of original characters plus any additional padding characters.
• paddingChar A Unicode padding character.
• Returns A new string that is equivalent to this instance, but left-aligned and padded on the right with as many characters as needed to create a length of . However, if is less than the length of this instance, the method returns a reference to the existing instance. If is equal to the length of this instance, the method returns a new string that is identical to this instance.

Returns a new string in which all the characters in the current instance, beginning at a specified position and continuing through the last position, have been deleted.

• startIndex The zero-based position to begin deleting characters.
• Returns A new string that is equivalent to this string except for the removed characters.

Returns a new string in which a specified number of characters in the current instance beginning at a specified position have been deleted.

• startIndex The zero-based position to begin deleting characters.
• count The number of characters to delete.
• Returns A new string that is equivalent to this instance except for the removed characters.

Returns a new string in which all occurrences of a specified Unicode character in this instance are replaced with another specified Unicode character.

• oldChar The Unicode character to be replaced.
• newChar The Unicode character to replace all occurrences of .
• Returns A string that is equivalent to this instance except that all instances of are replaced with . If is not found in the current instance, the method returns the current instance unchanged.

Returns a new string in which all occurrences of a specified string in the current instance are replaced with another specified string.

• oldValue The string to be replaced.
• newValue The string to replace all occurrences of .
• Returns A string that is equivalent to the current string except that all instances of are replaced with . If is not found in the current instance, the method returns the current instance unchanged.

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Splits a string into substrings that are based on the characters in an array.

• separator A character array that delimits the substrings in this string, an empty array that contains no delimiters, or .
• Returns An array whose elements contain the substrings from this instance that are delimited by one or more characters in . For more information, see the Remarks section.

Splits a string into a maximum number of substrings based on the characters in an array. You also specify the maximum number of substrings to return.

• separator A character array that delimits the substrings in this string, an empty array that contains no delimiters, or .
• count The maximum number of substrings to return.
• Returns An array whose elements contain the substrings in this instance that are delimited by one or more characters in . For more information, see the Remarks section.

Splits a string into a maximum number of substrings based on the characters in an array.

• separator A character array that delimits the substrings in this string, an empty array that contains no delimiters, or .
• count The maximum number of substrings to return.
• options to omit empty array elements from the array returned; or to include empty array elements in the array returned.
• Returns An array whose elements contain the substrings in this string that are delimited by one or more characters in . For more information, see the Remarks section.

Splits a string into substrings based on the characters in an array. You can specify whether the substrings include empty array elements.

• separator A character array that delimits the substrings in this string, an empty array that contains no delimiters, or .
• options to omit empty array elements from the array returned; or to include empty array elements in the array returned.
• Returns An array whose elements contain the substrings in this string that are delimited by one or more characters in . For more information, see the Remarks section.

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Splits a string into a maximum number of substrings based on the strings in an array. You can specify whether the substrings include empty array elements.

• separator A string array that delimits the substrings in this string, an empty array that contains no delimiters, or .
• count The maximum number of substrings to return.
• options to omit empty array elements from the array returned; or to include empty array elements in the array returned.
• Returns An array whose elements contain the substrings in this string that are delimited by one or more strings in . For more information, see the Remarks section.

Splits a string into substrings based on the strings in an array. You can specify whether the substrings include empty array elements.

• separator A string array that delimits the substrings in this string, an empty array that contains no delimiters, or .
• options to omit empty array elements from the array returned; or to include empty array elements in the array returned.
• Returns An array whose elements contain the substrings in this string that are delimited by one or more strings in . For more information, see the Remarks section.

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Determines whether the beginning of this string instance matches the specified string.

• value The string to compare.
• Returns if matches the beginning of this string; otherwise, .

Determines whether the beginning of this string instance matches the specified string when compared using the specified culture.

• value The string to compare.
• ignoreCase to ignore case during the comparison; otherwise, .
• culture Cultural information that determines how this string and are compared. If is , the current culture is used.
• Returns if the parameter matches the beginning of this string; otherwise, .

Determines whether the beginning of this string instance matches the specified string when compared using the specified comparison option.

• value The string to compare.
• comparisonType One of the enumeration values that determines how this string and are compared.
• Returns if this instance begins with ; otherwise, .

Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

• startIndex The zero-based starting character position of a substring in this instance.
• Returns A string that is equivalent to the substring that begins at in this instance, or if is equal to the length of this instance.

Retrieves a substring from this instance. The substring starts at a specified character position and has a specified length.

• startIndex The zero-based starting character position of a substring in this instance.
• length The number of characters in the substring.
• Returns A string that is equivalent to the substring of length that begins at in this instance, or if is equal to the length of this instance and is zero.

Copies the characters in a specified substring in this instance to a Unicode character array.

• startIndex The starting position of a substring in this instance.
• length The length of the substring in this instance.
• Returns A Unicode character array whose elements are the number of characters in this instance starting from character position .

Returns a copy of this string converted to lowercase, using the casing rules of the specified culture.

• culture An object that supplies culture-specific casing rules.
• Returns The lowercase equivalent of the current string.

Returns this instance of ; no actual conversion is performed.

• provider (Reserved) An object that supplies culture-specific formatting information.
• Returns The current string.

Returns a copy of this string converted to uppercase, using the casing rules of the specified culture.

• culture An object that supplies culture-specific casing rules.
• Returns The uppercase equivalent of the current string.

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Removes all leading and trailing occurrences of a set of characters specified in an array from the current object.

• trimChars An array of Unicode characters to remove, or .
• Returns The string that remains after all occurrences of the characters in the parameter are removed from the start and end of the current string. If is or an empty array, white-space characters are removed instead. If no characters can be trimmed from the current instance, the method returns the current instance unchanged.

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Removes all trailing occurrences of a set of characters specified in an array from the current object.

• trimChars An array of Unicode characters to remove, or .
• Returns The string that remains after all occurrences of the characters in the parameter are removed from the end of the current string. If is or an empty array, Unicode white-space characters are removed instead. If no characters can be trimmed from the current instance, the method returns the current instance unchanged.

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Removes all leading occurrences of a set of characters specified in an array from the current object.

• trimChars An array of Unicode characters to remove, or .
• Returns The string that remains after all occurrences of characters in the parameter are removed from the start of the current string. If is or an empty array, white-space characters are removed instead.

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