How to check file is cheched out by whom?

How to check file is checked out by whom? I'm using Team Explorer in Visual Studio 2开发者_Go百科010

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In source control explorer, find the file you're interested in, right click and go to properties. In there you will see a status tab that shows you where the file is checked out to (user & workspace) and any pending actions on the file.

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See this images Notes : its related to vs 2008 step1:

step 2 :

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Use View -> Other Windows -> Source Control Explorer

or

Use an 3rd party tool like TFS Sidekicks (http://www.attrice.info/cm/tfs/)