HttpCacheVaryByHeaders Class
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HttpCacheVaryByHeaders Class

 

Provides a type-safe way to set the VaryByHeaders property.

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

System.Object
  System.Web.HttpCacheVaryByHeaders

public sealed class HttpCacheVaryByHeaders

NameDescription
System_CAPS_pubmethodHttpCacheVaryByHeaders()

Initializes a new instance of the HttpCacheVaryByHeaders class.

NameDescription
System_CAPS_pubpropertyAcceptTypes

Gets or sets a value indicating whether the ASP.NET output cache varies the cached responses by the Accept HTTP header, and appends it to the out-going Vary HTTP header.

System_CAPS_pubpropertyItem[String]

Gets or sets a custom header field that the ASP.NET output cache varies the cached responses by, and appends it to the out-going Vary HTTP header.

System_CAPS_pubpropertyUserAgent

Gets or sets a value indicating whether the ASP.NET output cache varies the cached responses by the User-Agent header, and appends it to the out-going Vary HTTP header.

System_CAPS_pubpropertyUserCharSet

Gets or sets a value indicating whether the ASP.NET output cache varies the cached responses by the Accept-Charset header, and appends it to the out-going Vary HTTP header.

System_CAPS_pubpropertyUserLanguage

Gets or sets a value indicating whether the ASP.NET output cache varies the cached responses by the Accept-Language header, and appends it to the out-going Vary HTTP header.

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubmethodVaryByUnspecifiedParameters()

Causes ASP.NET to vary by all header values and sets the Vary HTTP header to the value * (an asterisk). All other Vary header information to be dropped.

The VaryByHeaders property identifies which request header parameters ASP.NET uses to uniquely identify a variation of the response when there are multiple cached responses for a resource. This is useful when a response depends on a set of client inputs, such as headers or parameters.

The HttpCacheVaryByHeaders is not directly related to HTTP cache-control headers, but helps ensure that a client or proxy varies by the specified headers. For more information about VaryByHeaders, see RFC 2616: Hypertext Transfer Protocol -- HTTP/1.1, available on the World Wide Web Consortium (W3C) Web site. See section 14, "Header Field Definitions", for complete details.

.NET Framework
Available since 1.1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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