String.Contains Method
.NET Framework 4.5
Returns a value indicating whether the specified String object occurs within this string.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
- Type: System.String
The string 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 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
