StringBuilderExtensionLastIndexOf(StringBuilder, Char, Int32, Int32) Method

Specifies the zero-based index of the last occurrence of the specified character in builder. The search begins at a specified index and runs backwards for a specified number of character positions to the beginning of the StringBuilder.

Definition

Namespace: FolkerKinzel.Strings
Assembly: FolkerKinzel.Strings (in FolkerKinzel.Strings.dll) Version: 9.4.0+10a7d4d71aa960998e32ac0ac6c4fcbe4164c917

C#

public static int LastIndexOf(
	this StringBuilder builder,
	char value,
	int startIndex,
	int count
)

VB

<ExtensionAttribute>
Public Shared Function LastIndexOf ( 
	builder As StringBuilder,
	value As Char,
	startIndex As Integer,
	count As Integer
) As Integer

C++

public:
[ExtensionAttribute]
static int LastIndexOf(
	StringBuilder^ builder, 
	wchar_t value, 
	int startIndex, 
	int count
)

F#

[<ExtensionAttribute>]
static member LastIndexOf : 
        builder : StringBuilder * 
        value : char * 
        startIndex : int * 
        count : int -> int

Parameters

builder StringBuilder: The StringBuilder to search.
value Char: The Unicode character to search for.
startIndex Int32: The start index of the search. The search is done backwards to the beginning of builder.
count Int32: The number of character positions to examine.

Return Value

Int32
If value was found, the zero-based index position of its last occurrence within the section to be searched, otherwise -1.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type StringBuilder. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Remarks

The method performs an ordinal character comparison.

Exceptions

ArgumentNullException

builder is null.

ArgumentOutOfRangeException

builder is not empty and startIndex is less than zero or greater than or equal to the length of builder

- or -

builder is not empty and count is negative or startIndex - count + 1 is less than zero.