The referenced assembly “Facebook” could not be resolved

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hi all.
my project is a winform project and add reference Facebook.dll and Facebook.Winforms.dll to connect to Facebook API. But it show error

"The referenced assembly "Facebook" could not be resolved because it has a dependency on "System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project. anothertry"

please help me ! thank you !

Posted 13-Oct-13 2:24am

smile9x

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**Joezer BH** · Answer 1 · 2013-10-13T02:39:00

Solution 1

Check which assembly .NET framework version your project is and which is the "Facebook.dll"... there seems to be a mismatch,
It is pretty straight forward out of the error message.

E.g. You will have a problem trying to run .NET 4.5 assemblies in a project that targets .NET 4.0
Same goes for running x64 dlls in x86-32 solutions (with a different error message though)

[update]
* Go to the project's properties and select the target framework to be .NET 4.0, not Client Profile
[/update]

Cheers,
Edo

Posted 13-Oct-13 2:39am

Joezer BH

Updated 14-Oct-13 20:13pm

v3

Comments

smile9x 13-Oct-13 8:49am

i use .Net 4.0 and have used newest version Facebook and Facebook.Winform but it until show error

Joezer BH 13-Oct-13 9:15am

Which version (of .NET) is the Facebook.dll compiled for?

smile9x 13-Oct-13 12:33pm

Facebook version is 6.0.10.0

smile9x 13-Oct-13 12:57pm

and it show
Warning 1 The referenced assembly "Facebook.Winforms" could not be resolved because it has a dependency on "System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project. WindowsFormsApplication1

Joezer BH 15-Oct-13 2:14am

See update in the solution,
I hope that's the issue.