asp.net connect database mysql ไม่ได้อ่ะครับ ช่วยแนะนำด้วย

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using MySql.Data.Types;
using System.Data;
using System.Data.Odbc;
using MySql.Data.MySqlClient;


namespace WebApplication3
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

            //MySqlConnection connectionString = "server=localhost;" + "Database=xd;" + "Uid=root;" + "Pwd=rklzbfot;" + "pooling=false;";
            String strProvider = "Data Source=localhost;" + "Database=xd;" + "User ID=root;" + "Password=rklzbfot";
            
             MySqlConnection myConnection = new MySqlConnection(strProvider);
             myConnection.Open();
             String MyConState = myConnection.State.ToString();
             string sSql;
             sSql = "SELECT * FROM Product";
             MySqlDataAdapter myDataAdapter = new MySqlDataAdapter(sSql,myConnection);
             DataSet myDataSet = new DataSet();
             myDataAdapter.Fill(myDataSet, "myQuery1");
             GridView1.DataSource = myDataSet.Tables["myQuery1"];
             GridView1.DataBind();

             myConnection.Close();
          


        }
        

    }
}

Server Error in '/' Application.

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

Compiler Error Message: CS0246: The type or namespace name 'MySql' could not be found (are you missing a using directive or an assembly reference?)

Source Error:


Line 5:  using System.Web.UI;
Line 6:  using System.Web.UI.WebControls;
Line 7:  using MySql.Data.Types;
Line 8:  using System.Data;
Line 9:  using System.Data.Odbc;

Source File: c:\Users\ZieIw\Documents\Visual Studio 2010\Projects\WebApplication3\WebApplication3\WebForm1.aspx.cs    Line: 7 


Show Detailed Compiler Output:

Show Complete Compilation Source:


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1