How can i use SetDataBinding method in Visual Studio 2010 Ultimate???? Actually my code goes like this..

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.Common;
using System.Data.ProviderBase;
using System.Data.SqlTypes;
using System.Data.Sql;
using System.Data.SqlClient;


public partial class _Default : System.Web.UI.Page 
{
    SqlConnection conn = new SqlConnection("Data Source=CTS\\MSSQLSERVER2008;uid=sa;pwd=home;Initial Catalog=Northwind");
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            loadMyGrid();
        }
    }
    public void loadMyGrid()
    {
        conn.Open();
        SqlDataAdapter sda = new SqlDataAdapter("select EmployeeID,FirstName +"+"' '+"+"LastName as Name,Title,Address,City,Region,Country from employees", conn);
        DataSet ds = new DataSet();
        sda.Fill(ds);
        DataViewManager dvm = new DataViewManager(ds);
        dvm.DataViewSettings["Employees"].RowFilter = "Country='USA'";
        
       dataGrid.SetDataBinding(dvm,"Employees"); \\ This SetDataBinding( ) is not available in VS 2010
        GridView1.DataSource = ds;
        GridView1.DataBind();
        conn.Close();
    }
}

What namespace should i import in order to run this code successfully??? Help me out guys...
Thanks in advance...