FileSystemInfo.Extension Property
.NET Framework (current version)
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. |
Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Available since 10
.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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