String::LastIndexOf Method (String)
Reports the zero-based index position of the last occurrence of a specified string within this instance.
Assembly: mscorlib (in mscorlib.dll)
- Type: System::String
The string to seek.
Index numbering starts from zero. That is, the first character in the string is at index zero and the last is at Length - 1.
The search begins at the last character position of this instance and proceeds backward toward the beginning until either value is found or the first character position has been examined.
This method performs a word (case-sensitive and culture-sensitive) search using the current culture.Notes to Callers
As explained in Best Practices for Using Strings in the .NET Framework, we recommend that you avoid calling string comparison methods that substitute default values and instead call methods that require parameters to be explicitly specified. To find the last index of a substring within a string instance by using the comparison rules of the current culture, call the LastIndexOf(String, StringComparison) method overload with a value of StringComparison::CurrentCulture for its comparisonType parameter.
The following example removes opening and closing HTML tags from a string if the tags begin and end the string. If a string ends with a closing bracket character (">"), the example uses the LastIndexOf method to locate the start of the end tag.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.