(C#) ASP.NET - Session (DataSet & DataTable)

DataSet ds = new DataSet();
ds = DataSetObject;
Session["mySession1"] = ds;

DataTable = new DataTable();
dt = DataTableObject;
Session("mySession2") = dt;

//*** Used Session ***//
DataSet ds2;
ds2 = Session["mySession1"];

DataTable dt2;
dt2 = Session["mySession2"];

System.Data.OleDb.OleDbConnection objConn = new System.Data.OleDb.OleDbConnection();
System.Data.OleDb.OleDbCommand objCmd = new System.Data.OleDb.OleDbCommand();
System.Data.OleDb.OleDbDataAdapter dtAdapter = new System.Data.OleDb.OleDbDataAdapter();

DataSet ds = new DataSet();
DataTable dt;
String strConnString,strSQL;

strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + 
Server.MapPath("database/mydatabase.mdb")+";Jet OLEDB:Database Password=;";
strSQL = "SELECT * FROM customer";

objConn.ConnectionString = strConnString;

objCmd.Connection = objConn;
objCmd.CommandText = strSQL;
objCmd.CommandType = CommandType.Text;

dtAdapter.SelectCommand = objCmd;

dtAdapter.Fill(ds);
dt = ds.Tables[0];


Session["mySession"] = dt;

dtAdapter = null;
objConn.Close();
objConn = null;

//*** BindData to Control ***//
DataTable dt2;
dt2 = Session["mySession"];

if(Session["mySession"] != null)
{
    this.myDataGrid.DataSource = dt2;
    this.myDataGrid.DataBind();
}