Question

SqlDataReader sdr = cmd.ExecuteReader();？？？？？？异常

在如下程序中
conn.Open();
cmd = new SqlCommand("select top" + xzflag + "* from tb_Test where TypeID=1 order by newid()",conn);

//SqlDataReader sdr = cmd.ExecuteReader();？？？？？？
MessageBox.Show("123");
// while (sdr.Read())
// {
我用message,Box()判断何处出错时，发现只有SqlDataReader sdr = cmd.ExecuteReader();？？？？？？被注释掉时窗口才可以正常弹出，请问这句哪错了啊？？？急~！！

Answer 1

改成 cmd = new SqlCommand("select top " + xzflag + " * from tb_Test where TypeID=1 order by newid()",conn);
看看，SQL语句是不是少了空格