Problem adding GAC reference to VS2008 project

Question

Okay, so this isn't strictly a programming question, but it is a programming-related question.

I have a C# winforms project that I am trying to add a reference to the System.Messaging dll.

However, when I add the reference (from the .net tab of the Add References dialog), it shows up with a yellow exclamation warning.

Right-clicking on other references will allow me to view them in the object browser. Right clicking on the System.Messaging reference will not.

Here's the kicker though... If I click on another reference and scroll through the list in the object browser, I can see the System.Messaging entry.

I tried a variety of things to fix this so far, including a forced reinstall of the dll in the GAC using gacutil, but it's still not working.

Does anyone have any suggestions as to how to fix this? If I need to provide more information, please leave the specific information request in the comments.

Note. The operating system is Vista.

score 2 · Accepted Answer · answered Apr 05 '09 at 17:33

2

I managed to find the solution after some creative googling.

On the project settings, there is a checkbox marked "Client-only framework subset".

Unchecking that checkbox did the trick.

answered Apr 05 '09 at 17:33

Andrew Rollings

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Andrew, on which project did you check this box? The GAC'ed project or the project referencing the GAC'ed project. Thanks. – Tim Stewart Jul 13 '09 at 18:21
The one which needed to access the System.Messaging reference. – Andrew Rollings Jul 16 '09 at 02:10

score 0 · Answer 2 · answered Apr 05 '09 at 15:24

i faced a similar problem but in my asp.net project (and a different GAC assembly - cant remember the name though). i fixed it by explicity telling my application the exact version to use in my web.config by inserting add assembly tag

for eg:

<add assembly="System.Messaging, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

is there a way you can try this with your windows form app.config file (i havent worked much with winforms so not sure)

Problem adding GAC reference to VS2008 project

2 Answers2