ADO.net问题环境(C#+SQLSERVER)
如果数据库中有数据,就报错
如果数据库中没有数据,就正常显示
追问:public bool login(string id,string pwd)
{
SqlConnection conn = new SqlConnection(DBHelp.validateDB);
string tsql = string.Format("select * from Admin where name='{0}' and pwd='{1}'",id,pwd);
SqlCommand cmd = new SqlCommand(tsql,conn);
conn.Open();
int IsOK = Convert.ToInt32(cmd.ExecuteScalar());
return IsOK>0 ? true : false;
}