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Link Error LNK1316: duplicate managed resource by routine

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Type: Bug
ID: 534099
Opened: 2/16/2010 6:38:45 PM
Access Restriction: Public
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Workaround(s)
0
User(s) can reproduce this bug
Get link error 1316 (duplicate managed resource) when adding an existing Form/Header file and its associated resx file to C++/CLI Windows Forms Application.
Details (expand)

Product Language

English

Version

Visual Studio 2010 Release Candidate

Operating System

Windows Server 2003

Operating System Language

English

Steps to Reproduce

1. Have an existing C++/CLI Windows Form ready (header, cpp, and resx files). Make sure the name is not "Form1".
2. Create a new C++/CLI Windows Forms Application.
3. Compile new project -- everything should compile without error.
4. Copy existing C++/CLI Windows Form files from Step 1 to project folder in Step 2.
5. Refresh Solution Explorer (see bug #533088 for help on how to do this).
6. Right click on new files added from Step 1 and click on "Include In Project".
6b. Click on the header file for the Form you added and change the "File Type" from the properties window to "C++ Form".
7. Compile -- get link error: LNK 1316

Actual Results

error LNK1316: duplicate managed resource name 'WinForms.SomeForm.resources'

Expected Results

Compile and link without error.
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File Attachments
File Name Submitted By Submitted On File Size  
Sample.zip (restricted) routine 2/22/2010 -
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Posted by Li Shao [MSFT] on 2/22/2010 at 12:05 PM
Thank you for the additional information. I am able to repro your problem. It looks like an issue with project system not removing the extra Form2.resx that you change the form2.h from header type to Winform type.

<EmbeddedResource Include="form2.resx" />
    <EmbeddedResource Include="form2.resx">
     <DependentUpon>form2.h</DependentUpon>
    </EmbeddedResource>

You can fix that by manually removing form2.resx from solution explorer.

Since there is an easy workaround, we are not going to fix this for this release but will consider fixing it for future releases.

Again, thank you for your feedback!

Li Shao, Project and Build Team
Posted by routine on 2/22/2010 at 9:13 AM
I have attached a project where this is occurring.

You will need to include the files (Form2.h, Form2.cpp, Form2.resx) to the project.

One thing I forgot to mention after including the files, you must change the file type of Form2.h from 'C++ Header File' to 'C++ Form'.

To do this, click Form2.h file in Solution Explorer and edit the File Type property from the Properties window.

Once you get this error message, you will not be able to re-open the project. It fails.

Btw, I am able to reproduce this reliably:

1. Create a new Windows Forms C++/CLI project.
2. Add a new form: Form2.
3. Add a button to Form2 so it will generate a RESX file.
4. Save.
5. Remove Form2 from project (you will probably get error about disposed object).
6. Exit VS 2010.
7. Open VS 2010 and reopen project
8. Remove last bits of Form2.
9. Right click on all 3 Form2 (header, cpp, resx) files.
10. Click on include in project.
11. Click on Form2.h.
12. Edit properties, change File Type to "C++ Form".
13. Recompile.
Posted by Microsoft on 2/20/2010 at 11:22 PM
We are unable to reproduce this problem at our end. Could you attach the project that reproduces this bug?

Thanks,
Richa
Posted by Microsoft on 2/17/2010 at 1:36 AM
Thank you for your feedback, We are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(http://support.microsoft.com)
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Posted by routine on 2/16/2010 at 6:50 PM
The workaround for this bug is to add the header and cpp files alone, compile, then add the resx file afterwards.
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