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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);

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.

.NET Framework

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

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