VirtualPathUtility.GetExtension(String) Method

Definition

Namespace:

System.Web

Assembly:

System.Web.dll

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

public:
 static System::String ^ GetExtension(System::String ^ virtualPath);

public static string GetExtension (string virtualPath);

static member GetExtension : string -> string

Public Shared Function GetExtension (virtualPath As String) As String

Parameters

virtualPath

String

The virtual path.

Returns

String

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

Exceptions

ArgumentException

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

Examples

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());

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())

Remarks

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

See also

• GetDirectory(String)
• GetFileName(String)
• GetExtension(String)