HttpApplication.GetVaryByCustomString(HttpContext, String) Method

Reference

Definition

Namespace:: System.Web

Assembly:: System.Web.dll

Important

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Provides an application-wide implementation of the VaryByCustom property.

public:
 virtual System::String ^ GetVaryByCustomString(System::Web::HttpContext ^ context, System::String ^ custom);

public virtual string GetVaryByCustomString(System.Web.HttpContext context, string custom);

abstract member GetVaryByCustomString : System.Web.HttpContext * string -> string
override this.GetVaryByCustomString : System.Web.HttpContext * string -> string

Public Overridable Function GetVaryByCustomString (context As HttpContext, custom As String) As String

Parameters

context: HttpContext

An HttpContext object that contains information about the current Web request.

custom: String

The custom string that specifies which cached response is used to respond to the current request.

Returns

String

If 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.

Applies to

Product	Versions
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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