VirtualPathUtility.GetExtension Method (String)

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

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

Public Shared Function GetExtension (
	virtualPath As String
) As String

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 ("").

Exception Condition
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.

Dim sb As New StringBuilder()
Dim pathstring As String = 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
Available since 2.0
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