private string SinhMaTuDong()
{
try
{
string code = "";
QueriesTableAdapter queries = new QueriesTableAdapter();
string numbermax = queries.GetMaTranDauMax().ToString();
if (numbermax != "")
{
int temp = int.Parse(numbermax) + 1;
code = "0000" + temp;
code = "TD" + code.Substring(code.Length - 4);
}
else
{
code = "TD0001";
}
return(code);
}
catch (Exception)
{
}
return(null);
}