How to Create dynamic Panels in ASP.Net

Hi MElbakly,

I have created sample please refer below.

HTML

<asp:DropDownList runat="server" ID="ddlItems">
    <asp:ListItem Text="Mango" Value="0" />
    <asp:ListItem Text="Orange" Value="1" />
    <asp:ListItem Text="Apple" Value="2" />
    <asp:ListItem Text="Grape" Value="3" />
    <asp:ListItem Text="Pinaple" Value="4" />
</asp:DropDownList>
<br />
<asp:TextBox runat="server" ID="txtCount" Enabled="false" Text="5" />
<br />
<asp:Button Text="Generate Panel" runat="server" ID="btnGeneratePanel" OnClick="GeneratePanel" />

Code

protected void GeneratePanel(object sender, EventArgs e)
{
    int ddlItemsCount = ddlItems.Items.Count;
    int index = ddlItems.SelectedIndex;
    for (int i = 0; i <= index; i++)
    {
        //adding pannel
        Panel panel = new Panel();
        panel.ID = "pnl" + i;
        HtmlTable table = new HtmlTable();
        HtmlTableRow HeaderRow = new HtmlTableRow();
        HtmlTableCell HeaderCell = new HtmlTableCell();
        HtmlTableRow row = new HtmlTableRow();
        HtmlTableCell cell = new HtmlTableCell();
        HeaderCell.InnerText = ddlItems.Items[i].Text;
        //adding label
        int lblCount = int.Parse(txtCount.Text);
        Table tbl = new Table();
        TableRow row1 = new TableRow();
        TableCell cell1 = new TableCell();
        for (int j = 0; j < lblCount; j++)
        {
            Label lbl = new Label();
            lbl.ID = "lbl" + j;
            lbl.Text = "Label " + (j + 1) + "&nbsp;";
            cell1.Controls.Add(lbl);
        }
        row1.Controls.Add(cell1);
        tbl.Rows.Add(row1);
        cell.Controls.Add(tbl);
        HeaderRow.Cells.Add(HeaderCell);
        HeaderRow.Align = "Center";
        row.Cells.Add(cell);
        table.Rows.Add(HeaderRow);
        table.Rows.Add(row);
        panel.Controls.Add(table);
        form1.Controls.Add(panel);
    }
}

Screenshot