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HttpResponse.AddFileDependency Method

Adds a single file name to the collection of file names on which the current response is dependent.

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

public void AddFileDependency(
	string filename
)

Parameters

filename
Type: System.String
The name of the file to add.

When you use the AddFileDependency method to add a file dependency, you must also specify output caching programmatically or declaratively. For example, to specify output caching declaratively, use the @ OutputCache directive. For more information, see How to: Cache Page Output with File Dependencies.

The following example shows how to add a single file name to the AddFileDependency file dependency list. If the file changes, the cached response is invalidated.


String FileName;
 FileName = "C:\\Files\\F1.txt";
 Response.AddFileDependency(FileName);
    


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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