public partial class KonktatSuchen : Form
    {
        private delegate void MethodDelegate(string p_select);

        public KonktatSuchen()
        {
            InitializeComponent();
            
        }
        private void SetdataGridView(string p_select)
        {
            m_dataGridView1.DataSource = Settings.m_Db.ExecuteQueryReturnDataTable(p_select);
        }
        private void SetdataGridViewAsynchronous(string p_select)
        {
            IAsyncResult _ar;
            // Asynchroner aufruf initialisieren.
            if(this.InvokeRequired)
                _ar = this.BeginInvoke(new MethodDelegate(SetdataGridViewAsynchronous), new object[] { p_select });
            else
                SetdataGridView(p_select);

            // Do some useful work here. This would be work you want to have
            // run at the same time as the asynchronous call.

            // Warten bis wir ein "Fertig" Signal von der Asynchronen Funktion bekommen
            //_ar.AsyncWaitHandle.WaitOne();

            // Hol das Ergebniss vom Asynchronouen Aufruf.
            //dlgt.EndInvoke();


        
        }

        private void KonktatSuchen_Shown(object sender, EventArgs e)
        {
            m_backgroundWorker1.RunWorkerAsync(new object[] { "SELECT * FROM Kontakte" });
        }

        private void m_backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            //SetdataGridViewAsynchronous(e.Argument.ToString());
            m_dataGridView1.DataSource = Settings.m_Db.ExecuteQueryReturnDataTable("SELECT * FROM Kontakte");
        }


    }