Right-click on Solution Explorer, right-click on your project, select Add Reference... from the context menu, select the Browse tab from the Add Reference dialog, navigate to the bin/.NET 2.0 folder of your most recent installation of Connector/NET 5, select MySql.Data.Dll, and click OK.
Double-click over your form and add using MySql.Data.MySqlClient; to the list of using declarations, so the file looks like this:



using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using MySql.Data.MySqlClient;



namespace MySqlTestbed {

  public partial class Form1 : Form {

    public Form1() {

      InitializeComponent();

    }

  }

}

Add a reference to MySQL

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