打印用戶ID,但在這個地方印刷是我想打印的用戶ID,但在這個地方印刷是「System.Data.SqlClient.SqlDataReader」
System.Data.SqlClient.SqlDataReader
try
{
con = new SqlConnection(cs.DBConn);
con.Open();
String sql = "SELECT SSUserID from SSUserInformation where UserName like '"
+ txtUserName.Text + "%'";
cmd = new SqlCommand(sql, con);
rdr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
frm.lbluserid.Text = Convert.ToString(rdr);
con.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK
, MessageBoxIcon.Error);
}
您是否期待多行? ExecuteScalar取而代之? – Rup 2014-09-04 10:10:46