62,244
社区成员




using (SqlConnection conn = new SqlConnection("连接字符串"))
{
string cmdtxt = "select sum(ProductId) as SumProduct from Product where BigCategId=" + int.Parse(bigCateg);
SqlCommand cmd = new SqlCommand(cmdtxt, conn);
conn.Open();
label1.Text = cmd.ExecuteScalar().ToString();
conn.Close();
}
}