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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());


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

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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