Shops loading error

[Jaiz]

The last question and all done. Thank you very much @2 Also here: 

MySqlCommand dbCmd = new MySqlCommand("Update test_table SET test_column3=" + textBox1.Text + "WHERE test_column1 =" + dt.Rows[row]["test_column1"] + ";", dbCon);

i want update the table: t_shop -> a_keeper_idx

This code where i write 

MySqlCommand dbCmd = new MySqlCommand("Update t_shop SET a_keeper_idx=" + textBox_id.Text+ "WHERE (IDK what here) =" + dt.Rows[row]["(idk what here)"] + ";", dbCon);

What is the column 1?