Method LastIndexOf

LastIndexOf(StringBuilder, String)

Returns the last ordinal position of the start of searchValue within searchValue.

Declaration

public static int LastIndexOf(this StringBuilder builder, string searchValue)

Parameters

Type	Name	Description
System.Text.StringBuilder	builder	The string builder to search the contents of.
System.String	searchValue	The string to search for.

Returns

Type	Description
System.Int32	Returns -1 if searchValue does not exist within builder, otherwise returns the ordinal position at which searchValue starts.

Exceptions

Type	Condition
System.ArgumentNullException	Thrown if builder or searchValue is null.
System.ArgumentException	Thrown if searchValue is an empty string.

LastIndexOf(StringBuilder, String, Int32)

Returns the last ordinal position of the start of searchValue within searchValue.

Declaration

public static int LastIndexOf(this StringBuilder builder, string searchValue, int startIndex)

Parameters

Type	Name	Description
System.Text.StringBuilder	builder	The string builder to search the contents of.
System.String	searchValue	The string to search for.
System.Int32	startIndex	The first character position at which to start the search.

Returns

Type	Description
System.Int32	Returns -1 if searchValue does not exist within builder, otherwise returns the ordinal position at which searchValue starts.

Remarks

This method uses ordinal comparisions when searching for searchValue.

Exceptions

Type	Condition
System.ArgumentOutOfRangeException	Thrown if startIndex is less than 0 or greater than the length of the string builder.
System.ArgumentNullException	Thrown if builder or searchValue is null.
System.ArgumentException	Thrown if searchValue is an empty string.