VirtualPathUtility.IsAppRelative Method

Note: This method is new in the .NET Framework version 2.0.

Returns a Boolean value indicating whether the specified virtual path is relative to the application.

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

public static bool IsAppRelative (
	string virtualPath
public static boolean IsAppRelative (
	String virtualPath
public static function IsAppRelative (
	virtualPath : String
) : boolean



The virtual path to check.

Return Value

true if virtualPath is relative to the application; otherwise, false.

Exception typeCondition


virtualPath is a null reference (Nothing in Visual Basic).

The virtual path can be just the root operator (the tilde [~]), or it can begin with the root operator. If virtualPath is a null reference (Nothing in Visual Basic), an ArgumentNullException exception is raised. If virtualPath is an empty string (""), the IsAppRelative method returns false.


"~ filename " is not a valid virtual path and returns false for the IsAppRelative method.

The following code example demonstrates how to use the IsAbsolute, IsAppRelative, and ToAppRelative methods.

StringBuilder sb2 = new StringBuilder();
String pathstring1 = Context.Request.CurrentExecutionFilePath.ToString();
sb2.Append("Current Executing File Path = " + pathstring1.ToString() + "<br>");
sb2.Append("Is Absolute = " + VirtualPathUtility.IsAbsolute(pathstring1).ToString() + "<br>");
sb2.Append("Is AppRelative = " + VirtualPathUtility.IsAppRelative(pathstring1).ToString() + "<br>");
sb2.Append("Make AppRelative = " + VirtualPathUtility.ToAppRelative(pathstring1).ToString() + "<br>");

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

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