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 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.