Div inside table column width and height adjustment on run-time in ASP.NET C#

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pdf export success but table column width and height not working only default value set output pdf file..

how to set div inside table column and width on run-time in asp.net c#

What I have tried:

using iTextSharp.text;
 
using iTextSharp.text.pdf;
using iTextSharp.text.html;
using iTextSharp.text.html.simpleparser;
using System.Data.SqlClient;
using System.Configuration;

This is my div content:

<div id="employeelistDiv" runat="server">
    <table border="1">
        <tr>
            <td colspan="2">
                <b>Employee Detail</b>
            </td>
        </tr>
        <tr>
            <td><b>EmployeeID:</b></td>
            <td><asp:Label ID="lblEmployeeId" runat="server"></asp:Label></td>
        </tr>
        <tr>
            <td><b>FirstName:</b></td>
            <td><asp:Label ID="lblFirstName" runat="server"></asp:Label></td>
        </tr>
        <tr>
            <td><b>LastName:</b></td>
            <td><asp:Label ID="lblLastName" runat="server"></asp:Label></td>
        </tr>
        <tr>
            <td><b>City:</b></td>
            <td><asp:Label ID="lblCity" runat="server"></asp:Label></td>
        </tr>
           <tr>
            <td><b>Region:</b></td>
            <td><asp:Label ID="lblState" runat="server"></asp:Label></td>
        </tr>
         <tr>
            <td><b>Postal Code:</b></td>
            <td><asp:Label ID="lblPostalCode" runat="server"></asp:Label></td>
        </tr>
           <tr>
            <td><b>Country:</b></td>
            <td><asp:Label ID="lblCountry" runat="server"></asp:Label></td>
        </tr>      
    </table>
</div>
<asp:Button ID="btnExport" runat="server" Text="Export" OnClick="btnExport_Click" />

Code behind:

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        string ConString = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ConnectionString;
            SqlConnection con = new SqlConnection(ConString);
            SqlCommand cmd = new SqlCommand();
            cmd.CommandText = "SELECT TOP 1 EmployeeID, LastName, FirstName, Title, BirthDate, City, Region, PostalCode, Country FROM Employees";
            cmd.Connection = con;
            con.Open();
            DataTable dt = new DataTable();
            dt.Load(cmd.ExecuteReader());
            if (dt.Rows.Count > 0)
            {               
                //Bind Datatable to Labels
                lblEmployeeId.Text = dt.Rows[0]["EmployeeID"].ToString();
                lblFirstName.Text = dt.Rows[0]["FirstName"].ToString();
                lblLastName.Text = dt.Rows[0]["LastName"].ToString();
                lblCity.Text = dt.Rows[0]["City"].ToString();
                lblState.Text = dt.Rows[0]["Region"].ToString();
                lblPostalCode.Text = dt.Rows[0]["PostalCode"].ToString();
                lblCountry.Text = dt.Rows[0]["Country"].ToString();
            }
            con.Close();          
        }
}
protected void btnExport_Click(object sender, EventArgs e)
{
    Response.ContentType = "application/pdf";
    Response.AddHeader("content-disposition", "attachment;filename=Panel.pdf");
    Response.Cache.SetCacheability(HttpCacheability.NoCache);
   
    StringWriter stringWriter = new StringWriter();
    HtmlTextWriter htmlTextWriter = new HtmlTextWriter(stringWriter);
    employeelistDiv.RenderControl(htmlTextWriter);
   
    StringReader stringReader = new StringReader(stringWriter.ToString());
    Document Doc = new Document(PageSize.A4, 10f, 10f, 100f, 0f);
    HTMLWorker htmlparser = new HTMLWorker(Doc);
    PdfWriter.GetInstance(Doc, Response.OutputStream);
   
    Doc.Open();
    htmlparser.Parse(stringReader);
    Doc.Close();
    Response.Write(Doc);
    Response.End();
}
 
public override void VerifyRenderingInServerForm(Control control)
{
}