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String.Equals Method (String)

Updated: February 2009

Determines whether this instance and another specified String object have the same value.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public bool Equals(
	string value
)

Parameters

value
Type: System.String

A String.

Return Value

Type: System.Boolean
true if the value of the value parameter is the same as this instance; otherwise, false.

Implements

IEquatable<T>.Equals(T)

This method performs an ordinal (case-sensitive and culture-insensitive) comparison.

The following example demonstrates the Equals method.

using System;

public class Example
{
   public static void Main()
   {
      string word = "File";
      string[] others = { word.ToLower(), word, word.ToUpper(), "fıle" };
      foreach (string other in others)
      {
         if (word.Equals(other)) 
            Console.WriteLine("{0} = {1}", word, other);
         else
            Console.WriteLine("{0} {1} {2}", word, '\u2260', other);
      }        
   }
}
// The example displays the following output: 
//       File ≠ file 
//       File = File 
//       File ≠ FILE 
//       File ≠ fıle

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

Date

History

Reason

February 2009

Removed the Exceptions section.

Content bug fix.

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