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You can install <a href="http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=cd7c6e48-e41b-48e3-881e-a0e6e97f9534" rel="ugc nofollow">this add-on</a> which comes with &quot;Super Diff&quot;.
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You can install this add-on [http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=cd7c6e48-e41b-48e3-881e-a0e6e97f9534] which comes with "Super Diff".

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This is for Visual Studio 2005 and I am running 2008, still looking for a 2008 version...
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This is for Visual Studio 2005 and I am running 2008, still looking for a 2008 version...

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Are you asking for an IDE add-on, or a library you can reference from within your application's code to do a diff on two files?
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Are you asking for an IDE add-on, or a library you can reference from within your application's code to do a diff on two files?

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You could take a look at this: &nbsp;<a href="http://diffplex.codeplex.com/" rel="ugc">http://diffplex.codeplex.com/</a>
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You could take a look at this:  http://diffplex.codeplex.com/ [http://diffplex.codeplex.com/]

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I used WinMerge successfully.
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Is there a tool that from within a Visual Studio 2008/.Net C# application that can compare two files and return the differences (modified, new, and deleted lines) back to the application for screen display and output to &nbsp;file?
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Is there a tool that from within a Visual Studio 2008/.Net C# application that can compare two files and return the differences (modified, new, and deleted lines) back to the application for screen display and output to  file?

File comparison and output within Visual Studio 2008/.Net C# application

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.

.NET Programming

Most development for the Microsoft platform is done utilizing the technologies supported by the.NET framework. Other development is done using Visual Basic for Applications (VBA) for programs like Access, Excel, Word and Outlook, with PowerShell for scripting, or with SQL for large databases.