It’s a best practice to add comment when you do check-in to the source control. A text comment is associated with the change you made to the item. Some of the times you need to find a particular comment, but the View History tool available with Visual Studio/TFS is limited that you can’t make a search in the history results. Say you want to find all check-ins by a particular user 
Here comes the purpose of this small add-in. It provides search within history comments and find a particular change-set instead of traversing the whole list. The plug-in goes one step forward and facilitates free text search in change-set fields. For example you can use change-set id, username or even date-time as search keywords!!!
The major steps involved in developing this add-in are:
- Writing an add-in for Visual Studio 2005,
- Getting file history from Team Foundation Server (TFS),
- Look for the selected item in the Visual Studio IDE,
- Free text search along with the tools to compare two files.