private void btnAdd_Click(object sender, EventArgs e)
 {
     Cursor = Cursors.AppStarting;
     Form fx = new frmSalesQuotationEntry();
     fx.ShowDialog();
     btnRefresh.PerformClick();
     Cursor = Cursors.Default;
 }
 private void btnEdit_Click(object sender, EventArgs e)
 {
     Cursor = Cursors.AppStarting;
     try
     {
         Form fx = new frmSalesQuotationEntry((int)_grid.Columns["id"].Value);
         fx.ShowDialog();
         btnRefresh.PerformClick();
     }
     catch
     {
         RibbonMessageBox.Show("No data selected for editing\n",
             Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
     }
     Cursor = Cursors.Default;
 }