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.
Available since 10
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0