Stop and run thread from some place

[Fidelis Sobotta]

This is my code. The bold part says something about an invalid thread state. How to stop and run the thread from private void comboBox1_Selec tionChanged(obj ect sender, SelectionChange dEventArgs e) ?

using ....

namespace ns
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        public Thread stre;

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
           // run test()
        }

        void test()
        {
            stre = new Thread(unused => threadname(content));
            stre.Start();
        }
        
        void threadname(content content)
        {
        
        }

        private void comboBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (stre != null)
            {
                stre.Abort();
            }
            [B]stre.Start();[/B]
        }
    }
}