private void LoadConsultButton_Click(object sender, EventArgs e) { LoadClientForm lcf = new LoadClientForm(); lcf.ShowDialog(); if (ClientDataControl.Client != null) { System.Threading.Thread t = new System.Threading.Thread(new System.Threading.ThreadStart(ThreadProcMainForm)); t.SetApartmentState(System.Threading.ApartmentState.STA); t.Start(); this.Close(); } }