Please help again.

Export merged ASP.Net GridView cell to PDF using C#

how do i export image below along with the gridview which is in the same div?

Error Could not find a part of the path

<div class="div_width" id="DivToPrint" runat="server">

<img src="~/image/uum_mini.JPG" runat="server"/>

The c# code is as i posted before. please help.i'm desperately need help.

<div class="div_width" id="DivToPrint" runat="server">
    <div style="text-align: center; width: 90%; padding-bottom: 3px">
        <img src="~/image/uum_mini.JPG" runat="server" />
    </div>
    <br />
    <br />
    <table id="heading" class="table_stylePageISO" runat="server">
        <tr>
            <td>
                <div>
                    <asp:Label ID="lbltajuk" runat="server">INTERNAL QUALITY AUDIT REPORTING MS ISO 9001:2015</asp:Label><br />
                    <br />
                    <asp:Label ID="lbltitle" runat="server">REPORT BY GROUP</asp:Label>
                </div>
            </td>
        </tr>
    </table>

    <table style="width: 100%">
        <tr>
            <td>
                <asp:GridView ID="gvSiriAudit" runat="server" OnRowDataBound="gvSiriAudit_RowDataBound" OnPreRender="gvAuditPlanSearch_PreRender"
                    AutoGenerateColumns="False" ShowHeaderWhenEmpty="true" DataKeyNames="kod_kump">
                    <%--OnDataBound="gvSiriAudit_DataBound"--%>
                    <EmptyDataRowStyle HorizontalAlign="Center" ForeColor="Red" />
                    <EmptyDataTemplate>
                        <strong><span>NO DATA</span></strong>
                    </EmptyDataTemplate>
                    <%--<AlternatingRowStyle BackColor="#dedede"></AlternatingRowStyle>--%>
                    <Columns>
                        <asp:BoundField HeaderText="GROUP" DataField="kump_desc" ItemStyle-HorizontalAlign="Center"></asp:BoundField>
                        <asp:TemplateField HeaderText="NAME" ItemStyle-HorizontalAlign="Center" ItemStyle-Width="350px">
                            <ItemTemplate>
                                <asp:GridView ID="gvStaffName" runat="server" ShowHeader="false" Width="100%">
                                </asp:GridView>
                            </ItemTemplate>
                        </asp:TemplateField>
                        <asp:BoundField HeaderText="CLAUSE" DataField="clause_desc"></asp:BoundField>
                        <asp:BoundField HeaderText="PROCESS" DataField="process_desc" ItemStyle-HorizontalAlign="Center"></asp:BoundField>
                        <asp:BoundField HeaderText="SUBPROCESS" DataField="subprocess_desc" ItemStyle-HorizontalAlign="Center"></asp:BoundField>
                        <asp:BoundField HeaderText="DEPARTMENT" DataField="PTJDesc"></asp:BoundField>
                    </Columns>
                    <HeaderStyle BackColor="#df5015" Font-Bold="true" ForeColor="White" />
                </asp:GridView>
            </td>
        </tr>
    </table>
</div>

Document doc = new Document(PageSize.A4.Rotate(), 30f, 30f, 30f, 30f);
PdfWriter.GetInstance(doc, Response.OutputStream);
doc.Open();
 
for (int i = 0; i < gvSiriAudit.PageCount; i++)
{
    //Set the Page Index.
    gvSiriAudit.PageIndex = i;
 
    //Hide Page as not needed in PDF.
    gvSiriAudit.PagerSettings.Visible = false;
 
    //Populate the GridView with records for the Page Index.
    this.BindGridSiriAudit();
 
    //Render the GridView as HTML and add to PDF.
    using (StringWriter sw = new StringWriter())
    {
        using (HtmlTextWriter hw = new HtmlTextWriter(sw))
        {
            DivToPrint.RenderControl(hw);
            HTMLWorker htmlparser = new HTMLWorker(doc);
            StringReader sr = new StringReader(sw.ToString());
            gvSiriAudit.HeaderStyle.ForeColor = System.Drawing.Color.White;
            htmlparser.Parse(sr);
        }
    }
    //Add a new Page to PDF document.
    doc.NewPage();
}
 
doc.Close();
Response.ContentType = "Application/pdf";
Response.AddHeader("Content-Disposition", "inline; filename=GridviewExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Write(doc);
Response.End();