Gets the string representing the extension part of the file.
Assembly: mscorlib (in mscorlib.dll)
The Extension property returns the FileSystemInfo extension, including the period (.). For example, for a file c:\NewFile.txt, this property returns ".txt".
The following table lists examples of other typical or related I/O tasks.
To do this...
See the example in this topic...
Create a text file.
Write to a text file.
Read from a text file.
Retrieve the fully qualified path of a file.
Retrieve only the file name a path.
Retrieve only the directory name from a path.
Change the extension of a file.
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.