表单字段未使用iTextSharp呈现，无法从aspx页面转换为pdf

Question

 <asp:CheckBox ID="chkBasic" Visible="true" 
 Checked='<%# Eval("BasicProgram")%>' runat="server" />

In the above aspx page, I have form fields such as check boxes. I am using iTextsharp and XML Worker to convert the aspx page HTML content to PDF. However the check box is not visible in the pdf file generated. Any suggestions please.

Answer 1

I have chosen to use images instead of checkboxes. I am using two images one for checked and other for unchecked and showing them based on condition.