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POHow do I create a blank PDF signature field using an HTML input document or after exporting to PDF using ABCPDF?
 

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  1. POHow do I create a blank PDF signature field using an HTML input document or after exporting to PDF using ABCPDF?
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    <p>I have a source HTML document generated from an ASPX.</p> <p>I then convert the html to PDF using ABCPDF.</p> <p>The html has a signature area, which is just a text box with a border.</p> <p>I need a signature field inside the PDF with a name that I can pass on.</p> <p>The PDF will be sent to a third-party who will correspond with the client and then digitally sign the PDF and send it back.</p> <p>Given that I have an html document, or PDF, how do I programmatically add the blank PDF signature field around the original html signature area or somehow relate the two?</p> <p>Here is a sample application to demonstrate some of the things I'm doing:</p> <pre><code>namespace ABCPDFHtmlSignatureTest { using System.Diagnostics; using System.IO; using System.Reflection; using WebSupergoo.ABCpdf8; using WebSupergoo.ABCpdf8.Objects; /// &lt;summary&gt; /// The program. /// &lt;/summary&gt; public class Program { /// &lt;summary&gt; /// The file name. /// &lt;/summary&gt; private const string FileName = @"c:\temp\pdftest.pdf"; /// &lt;summary&gt; /// The application entry point. /// &lt;/summary&gt; /// &lt;param name="args"&gt; /// The args. /// &lt;/param&gt; public static void Main(string[] args) { var html = GetHtml(); var pdf = GetPdf(html); /* save the PDF to disk */ File.WriteAllBytes(FileName, pdf); /* open the PDF */ Process.Start(FileName); } /// &lt;summary&gt; /// The get PDF. /// &lt;/summary&gt; /// &lt;param name="html"&gt; /// The html. /// &lt;/param&gt; /// &lt;returns&gt; /// The &lt;see cref="byte"/&gt;. /// &lt;/returns&gt; public static byte[] GetPdf(string html) { var document = new Doc(); /* Yes, generate PDF fields for the html form inputs */ document.HtmlOptions.AddForms = true; document.AddImageHtml(html); /* We can determine the location of the field */ var signatureRect = document.Form["Signature"].Rect; MakeFieldsReadOnly(document.Form.Fields); return document.GetData(); } /// &lt;summary&gt; /// The get html. /// &lt;/summary&gt; /// &lt;returns&gt; /// The &lt;see cref="string"/&gt;. /// &lt;/returns&gt; public static string GetHtml() { using (var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream("ABCPDFHtmlSignatureTest.HTMLPage1.html")) { using (var streamReader = new StreamReader(stream)) { return streamReader.ReadToEnd(); } } } /// &lt;summary&gt; /// The make fields read only. /// &lt;/summary&gt; /// &lt;param name="fields"&gt; /// The fields. /// &lt;/param&gt; private static void MakeFieldsReadOnly(Fields fields) { foreach (var field in fields) { if (field.Name == "Signature") continue; field.Stamp(); } } } } </code></pre>
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    1. USMartin Lottering
    1. USMartin Lottering
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    1. COThe [CoSign SAPI library](http://www.arx.com/digital-signatures/sapi) (com object is available) can be used to create blank PDF signature fields for later signing. The library also supports the use of "field locators"--this enables the source document to indicate to the API library where the field should be located. Otherwise you need to specify the field's xy and size dimensions.
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      1. POHow do I create a blank PDF signature field using an HTML input document or after exporting to PDF using ABCPDF?
      1. USLarry K
 

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