InvokeOnMainThread for WPF and Forms

InvokeOnMainThread.cs

// For WPF you need the following Assemblies
// PresentationCore
// PresentationFramework
// WindowsBase
// WindowsFormsIntegration
// For Forms
// System.Windows.Forms

// create this in the main thread for your Forms application
internal static Control MainThreadInvokerControl;
protected delegate void TMethod();

public void InvokeOnMainThread(Delegate method)
{
        if (System.Windows.Application.Current != null)
        {
                try
                {
                    System.Windows.Application.Current.Dispatcher.Invoke(DispatcherPriority.Normal, method);
                }
                catch (Exception ex)
                {
                    Log.HandleException(this, ex);
                }
            }
            else
                MainThreadInvokerControl.Invoke(new TMethod(() =>
                {
                    try
                    {
                        method.DynamicInvoke();
                    }
                    catch (Exception ex)
                    {
                        Log.HandleException(this, ex);
                    }
                }));
        }
}

// Hosting WPF in Forms
// http://www.microsoft.com/germany/msdn/solve/knowhow/howto/cliententwicklung/WieHosteIchWPFSteuerelementeAufWindowsFormsAnwendungen.aspx