private void toolStripStatus_ThemMoi_Click(object sender, EventArgs e)
 {
     for (int j = 0; j < 1000; j++)
     {
         if (BaoDong == "")
         {
             frmXuLy_KiemKeKho kk = new frmXuLy_KiemKeKho("Insert");
             kk.ShowDialog();
             SelectData();
         }
         else
         {
             BaoDong = "";
             break;
         }
     }
 }
 private void dgvHienThi_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
 {
     for (int j = 0; j < 1000; j++)
     {
         if (BaoDong == "")
         {
             frmXuLy_KiemKeKho kk = new frmXuLy_KiemKeKho("Update", getDatagridview());
             kk.ShowDialog();
             SelectData();
         }
         else
         {
             BaoDong = "";
             break;
         }
     }
 }
 private void toolStripStatus_Sua_Click(object sender, EventArgs e)
 {
     for (int j = 0; j < 1000; j++)
     {
         if (BaoDong == "")
         {
             frmXuLy_KiemKeKho kk = new frmXuLy_KiemKeKho("Update", getDatagridview());
             kk.ShowDialog();
             SelectData();
         }
         else
         {
             BaoDong = "";
             break;
         }
     }
 }
 private void dgvHienThi_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
 {
     for (int j = 0; j < 1000; j++)
     {
         if (BaoDong == "")
         {
             frmXuLy_KiemKeKho kk = new frmXuLy_KiemKeKho("Update", getDatagridview());
             kk.ShowDialog();
             SelectData();
         }
         else
         {
             BaoDong = "";
             break;
         }
     }
 }
 private void toolStripStatus_ThemMoi_Click(object sender, EventArgs e)
 {
     for (int j = 0; j < 1000; j++)
     {
         if (BaoDong == "")
         {
             frmXuLy_KiemKeKho kk = new frmXuLy_KiemKeKho("Insert");
             kk.ShowDialog();
             SelectData();
         }
         else
         {
             BaoDong = "";
             break;
         }
     }
 }
 private void toolStripStatus_Sua_Click(object sender, EventArgs e)
 {
     for (int j = 0; j < 1000; j++)
     {
         if (BaoDong == "")
         {
             frmXuLy_KiemKeKho kk = new frmXuLy_KiemKeKho("Update", getDatagridview());
             kk.ShowDialog();
             SelectData();
         }
         else
         {
             BaoDong = "";
             break;
         }
     }
 }