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VirtualPathUtility.IsAbsolute Method

Returns a Boolean value indicating whether the specified virtual path is absolute; that is, it starts with a literal slash mark (/).

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

public static bool IsAbsolute(
	string virtualPath
)

Parameters

virtualPath
Type: System.String

The virtual path to check.

Return Value

Type: System.Boolean
true if virtualPath is an absolute path and is not null or an empty string (""); otherwise, false.

ExceptionCondition
ArgumentNullException

virtualPath is null.

A virtual path is absolute if it begins with a literal slash mark (/). For example, the Path property returns an absolute virtual path.

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 />");
Response.Write(sb2.ToString());

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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