telerik's radcontrols cause cross thread exception

Question

I am using Telerik's radcontrols for winforms.

Here is a program that can reproduce my problem:

public partial class RadForm1 : Telerik.WinControls.UI.RadForm
{
    public RadForm1()
    {
        InitializeComponent();
    }

    private void radButton1_Click(object sender, EventArgs e)
    {
        RadMessageBox.SetThemeName("Office2010Black");
        RadMessageBox.Show("Hello World");
        //MessageBox.Show("hello world");
        run();
    }

    public void run()
    {
        var thread = new Thread(() => run2());
        thread.IsBackground = true;
        thread.Start();
    }

    public void run2()
    {
        //MessageBox.Show("hello");
        RadMessageBox.Show("Hello");
    }
}

Whenever try using Telerik's messagebox I am getting a cross thread exception. However if I use the standard winform messagebox instead then it will work absolutely fine.

Maybe i am missing something here.

UPDATE:

for anyone else having the same problem this is the link to offical reply Click here

Answer 1

The winform MessageBox class is specifically designed to be able to be called from a non-UI thread.

The RadMessageBox simply wasn't. It was designed under the assumption that it would be called from the UI thread.