How to import a third part dll in Roslyn script？

[my522cn]

I know how to add a reference in roslyn script, but I don't know how to add a third part dll. Now my code has this error:

Microsoft.CodeAnalysis.Scripting.CompilationErrorException:“error CS0246: The type or namespace name 'TSBase' could not be found (are you missing a using directive or an assembly reference?)”

This is the main code:

public async void Main()
{
    string code1 = File.ReadAllText("TestMain.cs");
    await Task.Run(async () =>
    {
        var script = CSharpScript.RunAsync(code1 + "var tmain = new TestMain();", ScriptOptions.Default.AddReferences(typeof(TSBase).Assembly).AddImports("TestWPF")).Result;
        await script.ContinueWithAsync("tmain.Run();");
        var state1 = script.ContinueWithAsync<string>("tmain.Logger");
        Text += state1.Result.ReturnValue + "\n===========\n";
    });

    await Task.Run(async () =>
    {
        var script = CSharpScript.RunAsync(code1 + "var tmain = new TestMain();", ScriptOptions.Default.AddReferences(typeof(TSBase).Assembly).AddImports("TSBase")).Result;
        await script.ContinueWithAsync("tmain.Run();");
        var state1 = script.ContinueWithAsync<string>("tmain.Logger");
        Text += state1.Result.ReturnValue + "\n===========\n";
    });
}

The first task add a reference in the same namespace, it's works. The TestMain class:

using System;

namespace TestWPF
{
    public class TSBase
    {
        public string Logger { get; set; }
        public bool PanelResult { get; set; }

        public (bool result, string log) Test(string testname)
        {
            Logger += $"{testname} test passed";
            return (true, $"{testname} test passed");
        }

        public virtual void Run()
        {
            Logger = "Test Sequence is null";
        }
    }
}

The second task add a reference in another dll, it's not works. The TestMain class:

using System;

namespace TSBase
{
    public class TSBase
    {
        public string Logger { get; set; }
        public bool PanelResult { get; set; }

        public (bool result, string log) Test(string testname)
        {
            Logger += $"{testname} test passed";
            return (true, $"{testname} test passed");
        }

        public virtual void Run()
        {
            Logger = "Test Sequence is null";
        }
    }
}

And the script file:

using System;
using System.Collections.Generic;
//using System.Linq;
using System.Text;
using System.Threading.Tasks;

class TestMain : TSBase
{
    public override void Run()
    {
        Test("CPU1");
    }
}

The full code I have upload to: https://github.com/my522cn/TestWPFRoslyn

Pls help me and tell me how to using a third part dll in Roslyn script？ Thank you very much!

[my522cn]

have already solved:
https://github.com/my522cn/TestWPFRoslyn