This dependency cannot be added because it will create a circular dependency

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I have two proper developed projects now i want a project, more precisely a third project with only 1 form containing two button controls for navigation to each of my developed projects.

In such scenerio i use the technique of adding both the two project's (class library) solution files to third project, but when i add references it will gave me error that is "This dependency cannot be added because it will create a circular dependency"....

Anyone can help me or gave me a better idea...?
Thanx : Ghalib Mirza.

Posted 28-Jun-14 17:53pm

Ghalib Mirza

Updated 4-Dec-21 2:31am

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George Jonsson 29-Jun-14 0:05am

Too little information.
You need to analyze the references you have in each project.

PIEBALDconsult 29-Jun-14 0:23am

Probably a good time for an Interface.

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OriginalGriff · Answer 1 · 2014-06-28T19:34:00

You can't do that:
You have two projects P1 and P2 which have references to a third project P3.
If you add a reference to P1 in P3 then compilation becomes impossible: as soon as you compile P1 and produce a new binary, you have to recompile P3 because it depends on the binary file and the changes may impact it. This creates a new P3 binary, which means that P1 and P2 need to be recompiled - which creates a new binary, so P3 needs ....

See what VS is saying? You can't create circular dependencies because they prevent compilation working ever again!

If your P3 needs access to P1 and P2 for navigation, then it needs a reference: but P1 and P2 do not. If you have other code within P3 that P1 and P2 need, then extract it to P4 and have all three projects refer to it.

You definitely shouldn't have P1 and P2 knowing about the classes that create and display them - thats very much against the OOPs principles!

DevJr · Answer 2 · 2021-12-04T02:31:00

Try open your project .csproj that cause that warning, add below Code to manually add the reference:
Note:
- Make sure the path is correct.
- Change every TheReferenceProject below into the actual project name that you wanna add for reference.

<ItemGroup>
	<Reference Include="TheReferenceProject">
		<HintPath>$(SolutionDir)TheReferenceProject\bin\$(Configuration)\TheReferenceProject.dll</HintPath>
	</Reference>
</ItemGroup>

This dependency cannot be added because it will create a circular dependency

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