//Contractdata ddd = new Contractdata();
private void btnAdd_Click(object sender, EventArgs e)
{
Classdata.ContractFlag = 0;
FrmContractAdd frm = new FrmContractAdd();
frm.ShowDialog();
UpdateDataGrid(start, end, "");
}
private void btnXG_Click(object sender, EventArgs e)
{
if (Contractdata.contractno == null)
{
return;
}
Classdata.ContractFlag = 1;
FrmContractAdd frm = new FrmContractAdd();
frm.ShowDialog();
UpdateDataGrid(start, end, "");
}