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C#.NET interview questions: - What is the difference between Build Vs Rebuild Vs Clean solution menu? What is the difference “Rebuild” and if you do “Clean” + “Build”?

Following is C#.NET interview questions on comparison of Build Vs Rebuild Vs Clean solution.

  • Build solution menu: - This will perform an incremental build. In other words it will only build code files which have changed. If they have not changed those files will not touched.
  • Rebuild solution menu: - This will delete all current compiled files (i.e. exe and dll’s) and will build everything from scratch, irrespective if there is code change in the file or not.

Clean solution menu: - This menu will delete all compiled files (i.e. EXE’s and DLL’s) from “bin” / “obj” directory.

Now if you read the above 3 points I have discussed you can conclude that:-

Difference between “Rebuild” and if you do “Clean” + “Build”:-

The difference is the way the build and clean sequence happens for every project. Let’s say if your solution has two projects “proj1” and “proj2”. If you do a rebuild it will take “proj1”, clean ( delete) the  compiled files for “proj1” and build it. After that it will take the second project “proj2”, clean compiled files for “proj2” and compile “proj2”.

But if you do a “clean” and build”. It will first delete all compiled files for “proj1” and “proj2” and then it will build “proj1” first followed by “proj2”.

Below image explains the same in a more visual format.

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Shivprasad koirala Koirala
I am a Microsoft MVP for ASP/ASP.NET and currently a CEO of a small E-learning company in India. We are very much active in making training videos , writing books and corporate trainings. Do visit my site for .NET, C# , design pattern , WCF , Silverlight , LINQ , ASP.NET , ADO.NET , Sharepoint , UML , SQL Server training and Interview questions and answers
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