private void Reset_Button_Click(object sender, EventArgs e)
 {
     Bill_Number_Textbox.Text = string.Empty;
     ResetAllControls();
     Date_DatePicker.ResetText();
     Bill_Type_ComboBox.SelectedItem = null;
     Date_DatePicker.Focus();
 }
 private void DeleteRunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
 {
     progressBar.Close();
     if (MessageBox.Show("Successfully Deleted Sales Details", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information) == DialogResult.OK)
     {
         Date_DatePicker.ResetText();
         Bill_Type_ComboBox.SelectedItem = null;
         Bill_Number_Textbox.Text        = string.Empty;
         ResetAllControls();
         Date_DatePicker.Focus();
     }
 }