c# – How to open interactive window in Visual Studio 2026 automatic with code?

I tried hard with a lot of methods:

dte.ExecuteCommand("View.C#Interactive");

Even tried deleting temp file bin …..etc

I’m also changing view. C# Interactive to other and using ,0

Nothing worked. I asked chat and it didn’t work.

I’m getting an error shown in the screenshot.

Full ExecuteCommand tried is :

try
{
    EnvDTE.Window interactiveWindow = dte.Windows.Item("{0AD07096-BBAE-4166-8293-27ED14E16448}");

    // This must be done on the main thread
    ThreadHelper.JoinableTaskFactory.Run(async () =>
                {
                    await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
                    interactiveWindow.Activate();
                });
}
catch (Exception)
{
    // 2. If activation fails, execute the command to open it.
    try
    {
        dte.ExecuteCommand("View.C#Interactive");
    }
    catch (Exception ex)
    {
        MessageBox.Show($"Could not open C# Interactive Window: {ex.Message}");
        return;
    }
}
// *** END FIX FOR COMException ***

// 3. Send commands
System.Windows.Forms.Clipboard.SetText($"{script}\n{invocation}");
dte.ExecuteCommand("Edit.Paste");
System.Windows.Forms.SendKeys.SendWait("{ENTER}");