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VirtualPathUtility.GetExtension Method

Retrieves the extension of the file that is referenced in the virtual path.

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

public static string GetExtension(
	string virtualPath
)

Parameters

virtualPath
Type: System.String

The virtual path.

Return Value

Type: System.String
The file name extension string literal, including the period (.), null, or an empty string ("").

ExceptionCondition
ArgumentException

virtualPath contains one or more characters that are not valid, as defined in InvalidPathChars.

If the virtual path that is passed into the GetExtension method is "/images/image1.gif", the returned extension is ".gif".

The following code example demonstrates how to use the GetFileName, GetExtension, and GetDirectory methods.

StringBuilder sb = new StringBuilder();
String pathstring = Context.Request.FilePath.ToString();
sb.Append("Current file path = " + pathstring + "<br />");
sb.Append("File name = " + VirtualPathUtility.GetFileName(pathstring).ToString() + "<br />");
sb.Append("File extension = " + VirtualPathUtility.GetExtension(pathstring).ToString() + "<br />");
sb.Append("Directory = " + VirtualPathUtility.GetDirectory(pathstring).ToString() + "<br />");
Response.Write(sb.ToString());

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

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