Asp.Net C＃Mysql选择参数查询

Question

I need to get data from database . I added some parameters in my SQL. When I try to execute this sql , I got zero record. Which is my code;

        MysqlCon c = new MysqlCon();
        MySqlConnection con = c.GetMySqlConnection();
        MySqlCommand command = con.CreateCommand();
        con.Open();
        command.CommandText = "SELECT COUNT(*) FROM KASA WHERE KUL_AD=@AD ";
        command.Parameters.AddWithValue("@AD", "egemenhalici@gmail.com");
        int rc = Convert.ToInt32(command.ExecuteScalar());

If I write this sql without any parameters, I am getting datas.

What am I doing wrong?

thank you

Answer 1

Thank you very much for your attention. But I think I found my problem.

I don't know but I wrote ? for @ it worked.

    MysqlCon c = new MysqlCon();
    MySqlConnection con = c.GetMySqlConnection();
    MySqlCommand command = con.CreateCommand();
    con.Open();
    command.CommandText = "SELECT COUNT(*) FROM KASA WHERE KUL_AD=?AD ";
    command.Parameters.AddWithValue("?AD", "egemenhalici@gmail.com");
    int rc = Convert.ToInt32(command.ExecuteScalar());