C# String IndexOf(String, StringComparison)

Description

String IndexOf(String, StringComparison) reports the zero-based index of the first occurrence of the specified string in the current String object. A parameter specifies the type of search to use for the specified string.

Syntax

String.IndexOf(String, StringComparison) has the following syntax.

public int IndexOf(
  string value,
  StringComparison comparisonType
)

Parameters

String.IndexOf(String, StringComparison) has the following parameters.

• value - The string to seek.
• comparisonType - One of the enumeration values that specifies the rules for the search.

Returns

String.IndexOf(String, StringComparison) method returns The index position of the value parameter if that string is found, or -1 if it is not. If value is Empty, the return value is 0.

Example

In the following example, the IndexOf(String, StringComparison) method is used.

/*  w  w w. ja v  a  2  s .  co  m*/

using System;

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

      // Use culture-sensitive comparison to find the soft hyphen.
      Console.WriteLine(s1.IndexOf("\u00AD", StringComparison.CurrentCulture));
      Console.WriteLine(s2.IndexOf("\u00AD", StringComparison.CurrentCulture));

   }
}

The code above generates the following result.