how to asign the dynamic created table or panel to view state in c#

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C#

VB

ASP.NET

C#4.0

hi,

I am koti, i am faceing the problem when "asign the table to view state".the table contains the dynamic created dropdownlist with different "ids".
i asign the table to view state crror comes as follows

asp.net
<asp:tabel ID="table1" runat="server">

codebehind

if (int.TryParse(TextBox1.Text.Trim(), out numOfColumns) && int.TryParse(TextBox2.Text.Trim(), out numOfRows))
        {
            //Generate the Table based from the inputs
            GenerateTable(numOfColumns, numOfRows, "eng"); 

      viewstate["ko"]=table1;
}

private void GenerateTable(int colsCount, int rowsCount, string cat)
{
   try
   {
      //Table t = (Table)table1;
      //Page.Form.Controls.Add(table1);           
      for (int i = 0; i < rowsCount; i++)
      {
         TableRow row = new TableRow();
         for (int j = 0; j < colsCount; j++)
         {
            TableCell cell = new TableCell();
            //TextBox tb = new TextBox();
            DropDownList dl = new DropDownList();
            FileUpload ful = new FileUpload();
            // Set a unique ID for each TextBox added
            //tb.ID = "tb_" + i + "Col_" + j;
            dl.ID = cat + "dl_" + i + "Col_" + j;
            ful.ID = cat + "ful_" + i + "Col_" + j;
            
            SqlCommand cmd = new SqlCommand();
            cmd.Connection = con;
            DataSet ds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter("select PaperName from [7Seas_News_displayT]", con);
            da.Fill(ds, "[7Seas_News_displayT]");
            con.Open();
            cmd.CommandText = "select PaperName from [7Seas_News_displayT]";
            DataTable dt = new DataTable();
            dt.Load(cmd.ExecuteReader());
            dl.DataSource = dt;
            dl.DataTextField = "PaperName";
            //dl.DataValueField = "Sno";
            dl.DataBind();
            con.Close();
            // Add the control to the TableCell
            //cell.Controls.Add(tb);
              
            table1.Controls.Add(dl);
            table1.Controls.Add(ful);
            // Add the TableCell to the TableRow
           }
           // Add the TableRow to the Table
        }
      }
      catch
      {
      }
      //Creat the Table and Add it to the Page
}

Type 'System.Web.UI.WebControls.Panel' in Assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is not marked as serializable

if any one knows how to solve the this problem , please share the information for me.
Thanks In Advance.

/EDIT Inline code Format