InfoPath Dev

 UPDATED:

I fixed it. But now I want to know how can I change serializable namespace, making my created-by-code xml became like its created by Web browser, since I can't update promoted column value.

ORIGINAL POST:

 Hello all,

First of all, I've read and learned a lot in infopathdev.com. And this is my 1st post.

Here is my situation :

1/  I have an infopath browsed-enable form which contain code-behind.Let's call it "FORM A"

2/  I'm trying to use this FORM A to create another form ( FORM B) in another Document Library in SharePoint.

3/  So far, my code can build and preview without any error, It's also create a form in another Document Library.

4/ But when I tried to upload this form to Central Administration ( due to full trust, admin approval for those code-behind ). I received an error : "Object reference not set to an instance of an object"

Other facts :

 I'm using xsd.exe to create a class FORM B, then add it to my FORM A VSTA project.

My template FORM B :

-INV

--group MainBody

--------group Products

----------------textfield ProductsName

----------------textfield ProductsCAT

----------------interger Quantity

--------group FileAttachment

----------------FileAttachment Files

--group Hidden

My code in FORM A:

 <Code>

                            INV inv = new INV();
                            inv.MainBody = new MainBody();
                            inv.MainBody.Products = new Products();
                            inv.MainBody.FileAttachment = new FileAttachment();

                            inv.Hidden = new Hidden();       

                            string ProductsName = "Name 1";
                            string ProductsCAT = "Category 1";

                            int Quantity = 1; 

                           
                            inv.MainBody.Products.ProductsName = ProductsName;
                            inv.MainBody.Products.ProductsCAT = ProductsCAT;                           
                            inv.MainBody.Products.Quantity = Quantity;
                            MemoryStream myInStream = new MemoryStream();
                            string rFormSite = @"http://win-3n17kmdof3n/LIBRARY_B/";
                            string rTemplateLocation = @"http://win-3n17kmdof3n/LIBRARY_B/Forms/template.xsn";
                            using (myInStream)
                            {
                                XmlSerializer serializer = new XmlSerializer(typeof(INV));
                                XmlTextWriter writer = new XmlTextWriter(myInStream, Encoding.UTF8);
                                string rInstruction = "name=\"urn:schemas-microsoft-com:office:infopath:LIBRARY_B:-myXSD-2013-08-01T10-04-54\"";
                                rInstruction += " solutionVersion=\"1.0.0.238\" productVersion=\"14.0.0.0\" PIVersion=\"1.0.0.0\" href=\"" + rTemplateLocation + "\"";
                                writer.WriteProcessingInstruction("mso-infoPathSolution", rInstruction);
                                writer.WriteProcessingInstruction("mso-application", "progid=\"InfoPath.Document\" versionProgid=\"InfoPath.Document.3\"");
                                serializer.Serialize(writer, inv);
                                using (SPSite site = new SPSite(rFormSite))
                                {
                                    using (SPWeb webs = site.OpenWeb())
                                    {
                                        webs.Files.Add(rFormSite + RandomfilenameFunc() + ".xml", myInStream);
                                    }
                                }
                            }

</Code>

Thank you,

Update :

Instead of add the class to project. I've copied all the code in the class created by xsd.exe and pasted it into FormClass.cs

Somehow I can upload the form now. But when the code of that button is executed, Infopath thrown an error :"There has been an error while processing the form. - LogID 5337"