C# String LastIndexOf(String, Int32, Int32)

Description

String LastIndexOf(String, Int32, Int32) 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.

Syntax

String.LastIndexOf(String, Int32, Int32) has the following syntax.

public int LastIndexOf(
  string value,/*  w w w . j ava  2  s . c  o  m*/
  int startIndex,
  int count
)

Parameters

String.LastIndexOf(String, Int32, Int32) has the following parameters.

• value - The string to seek.
• startIndex - The search starting position. The search proceeds from startIndex toward the beginning of this instance.
• count - The number of character positions to examine.

Returns

String.LastIndexOf(String, Int32, Int32) method returns The zero-based starting index position of value if that string is found, or -1 if it is not found or if the current instance equals String.Empty. If value is Empty, the return value is the smaller of startIndex and the last index position in this instance.

Example

using System;//from  w  w w  . j  a v a  2 s .c  o  m

public class Example
{
   public static void Main()
   {
      int position = 0;
      string s1 = "ani\u00ADmal";
      string s2 = "animal";


      // Find the index of the soft hyphen followed by "n".
      position = s1.LastIndexOf("m");
      Console.WriteLine("'m' at position {0}", position);
      if (position >= 0)
         Console.WriteLine(s1.LastIndexOf("\u00ADn", position, position + 1));
   }
}

The code above generates the following result.