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My visual webpart is under the namespace IAA, and under IAA.ExtendedControls I define a few custom ASP.net Control tags to use on my .ascx page as follows:

namespace IAA.ExtendedControls {
    public class SPTextBox : TextBox {
        public string spColumn { get; set; }
    }
}

Then in my AssemblyInfo.cs I have:

[assembly: TagPrefix("IAA.ExtendedControls", "aspExt")]

And finally on my .ascx I have the following:

<%@ Register Assembly="IAA" Namespace="IAA.ExtendedControls" TagPrefix="aspExt" %>

...

<aspExt:SPTextBox ID="mytextbox" runat="server" spColumn="spColName" />

When I deploy the solution and try to use the webpart I get the error:

Parser Error Message: Could not load file or assembly 'IAA' or one of its dependencies. The system could not find the file specified.

I tried adding the assembly in Package, but I get the error that Both IAA.csproj" and "IAA" contain a file that deploys to the same Package location: IAA.dll.

I don't want to put my custom tags in a new project. Is there any way to make these tags available from the same namespace as the rest of my project?

  • Did you deeply using full trust bin deployment flag? – Benny Skogberg Oct 3 '16 at 17:31

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