调用线程必须为 STA，因为许多 UI 组件都需要(转载)

public partial class Window1 : Window
{
private delegate void DoTask();
public Window1()
{
InitializeComponent();

Thread t = new Thread(new ThreadStart(Start));
t.Start();

}
private void Start()
{
System.Windows.Application.Current.Dispatcher.Invoke(DispatcherPriority.Background, new DoTask(DoMyTask));
}
private void DoMyTask()
{
//在此执行你的代码
}
}