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c# - CompilerParameters.ReferencedAssemblies -- Add reference to System.Web.UI.WebControls

I am compiling classes at run-time using the CodeDomProvider class. This works fine for classes only using the System namespace:

using System;

public class Test
{
    public String HelloWorld()
    {
        return "Hello World!";
    }
}

If I try to compile a class using System.Web.UI.WebControls though, I get this error:

{error CS0006: Metadata file 'System.Web.UI.WebControls' could not be found} System.CodeDom.Compiler.CompilerError

Here's a snippet of my code:

var cp = new CompilerParameters();

cp.ReferencedAssemblies.Add("System.Web.UI.WebControls");

How do I reference the System.Web.UI.WebControls namespace?

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by (71.8m points)

You can loop through all the currently loaded assemblies:

var assemblies = AppDomain.CurrentDomain
                            .GetAssemblies()
                            .Where(a => !a.IsDynamic)
                            .Select(a => a.Location);   

cp.ReferencedAssemblies.AddRange(assemblies.ToArray());

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