String.Contains Method
Returns a value indicating whether the specified String object occurs within this string.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
- Type: System.String
The String object to seek.
Return Value
Type: System.Booleantrue if the value parameter occurs within this string, or if value is the empty string (""); otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentNullException | value is null. |
The following example determines whether the string "fox" is a substring of a familiar quotation.
// This example demonstrates the String.Contains() method using System; class Sample { public static void Main() { string s1 = "The quick brown fox jumps over the lazy dog"; string s2 = "fox"; bool b; b = s1.Contains(s2); Console.WriteLine("Is the string, s2, in the string, s1?: {0}", b); } } /* This example produces the following results: Is the string, s2, in the string, s1?: True */
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.