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Description
GetFileExtension() is used to extract the extension portion from a filename.
Call Signature
string GetFileExtension ( string filename )
Return Value
string
The extension of the file is returned. An empty string is returned if there is no extension.
Argument
string filename:
The name of the file from which the extension should be extracted.
Remarks
The extension is the part after the period, such as "txt" in "readme.txt".
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