title: how to write the code for download button in ASP.net
body: <p>In my DB I have saved the address of a pdf file as string type, now how can I download it by clicking download button??? I need the help to write the code for my download button... </p>
  
  <pre><code>    &lt;td bgcolor="#CCE6FF" class="style7"&gt; Chapter 1 &lt;br /&gt; 
                  &lt;asp:Button ID="Button6" runat="server" onclick="Button6_Click" Text="pdf"  /&gt;
                &lt;/td&gt;
  </code></pre>
  
  <p>In my DB there are 4 columns ChapterID(pk),Name,Document and SubjectId(fk). In document column I have saved the pdf file address as string. Now I want, when I click the download button it should be able to download the file... How can I do that?????</p>