.NET Framework Class Library
HttpApplication.GetVaryByCustomString Method
Provides an application-wide implementation of the VaryByCustom property.
Assembly: System.Web (in System.Web.dll)
Syntax
Visual Basic (Declaration)
Public Overridable Function GetVaryByCustomString ( _ context As HttpContext, _ custom As String _ ) As String
Visual Basic (Usage)
Dim instance As HttpApplication Dim context As HttpContext Dim custom As String Dim returnValue As String returnValue = instance.GetVaryByCustomString(context, _ custom)
C#
public virtual string GetVaryByCustomString( HttpContext context, string custom )
Visual C++
public: virtual String^ GetVaryByCustomString( HttpContext^ context, String^ custom )
JScript
public function GetVaryByCustomString( context : HttpContext, custom : String ) : String
Parameters
- context
- Type: System.Web.HttpContext
An HttpContext object that contains information about the current Web request.
- custom
- Type: System.String
The custom string that specifies which cached response is used to respond to the current request.
Return Value
Type: System.StringIf the value of the custom parameter is "browser", the browser's Type; otherwise, null.
Remarks
You can override GetVaryByCustomString to add a new method for calculating custom vary-by values that are based on the current request. The implementation has to call the base class for custom values that it does not recognize. For more information, see How to: Cache Versions of a Page Using Custom Strings.
Platforms
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
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.
Version Information
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0See Also