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Asked: 2026-05-18T01:07:40+00:00

I’m writing a Visual Studio add-in and have a 16×16 bitmap resource that I

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I’m writing a Visual Studio add-in and have a 16×16 bitmap resource that I would like to use as the button image for my menu item.

Following these instructions from the MSDN, I renamed the resource 1 and the file 1.bmp, then edited Resources.resx accordingly:

<data name="1" type="System.Resources.ResXFileRef, System.Windows.Forms">
    <value>..\1.bmp;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
</data>

I then changed my call to Commands2.AddNamedCommand2, passing false and 1 as the arguments for MSOButton and Bitmap respectively:

Command command = commands.AddNamedCommand2(addIn, "MyAddIn", "MyAddIn", "Open MyAddIn", false, 1, ref contextGUIDS,
                                            (int)vsCommandStatus.vsCommandStatusSupported + (int)vsCommandStatus.vsCommandStatusEnabled, (int)vsCommandStyle.vsCommandStylePictAndText, vsCommandControlType.vsCommandControlTypeButton);

Now when I launch the add-in in Visual Studio, Commands2.AddNamedCommand2 throws a FileNotFoundException:

Additional information: Could not load
file or assembly ‘MyAddIn.resources,
Version=0.1.3939.33205, Culture=en,
PublicKeyToken=null’ or one of its
dependencies. The system cannot find
the file specified.

What am I doing wrong?

EDIT: I’m doing this in Visual Studio 2005, in case that is significant.

EDIT2: The project is on github, if anyone wants to look at the source and/or try to reproduce the issue.

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1 Answer

  1. Editorial Team

    If you create the resource-only assembly manually, e.g. 

    resgen.exe "Path\To\Resource.resx" "Path\To\Bin\en\MyAddin.resources"
al.exe /c:en /embed:"Path\To\Bin\en\MyAddin.resources" /out:"Path\To\Bin\en\MyAddin.resources.dll"

    and then set your assembly version to 0.0.0.0 (or alternatively set the resource assembly version in the al.exe command, or use the [assembly: System.Resources.SatelliteContractVersion()] attribute), you should get past the FileNotFoundException. Using resgen.exe might also tell you why the assembly isn’t being generated and linked automatically.

    You can also subscribe to the AppDomain.AssemblyResolve event, e.g. here, to trace or override the loading of resource (or other) assemblies.

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