MySqlCommand().ExecuteReader().GetString() does not work

Question

I'm working with MySql in the C# programming language. I'm trying to get some data out of my database.

The fields are organized like this:

foo	baa
38737	22222

I need to get the value of foo if my hash is equal to baa

I tried this:

My code(not working)

MySqlConnection con = new 
    MySqlConnection("Server=localhost;Database=test;Uid=user;Pwd=pass;");
con.Open();
MySqlCommand cmd = new MySqlCommand();
cmd.CommandText = string.Format("SELECT * FROM info WHERE baa = '{0}'", Hash);
cmd.Connection = con;
MySqlDataReader reader = cmd.ExecuteReader();
String res = reader.GetString(0); 

I'm getting the following error:

Invalid attempt to access a field before calling Read() 

Can someone point out my error?

Answer 1

You are missing a reader.Read() call:

 MySqlDataReader reader = cmd.ExecuteReader();
 while(reader.Read())
 {
     String res = reader.GetString(0); 
     //...
 }