Saving Sitecore Web form for marketers programmatically

Question

How do I save a form without using a submission button (I have another trigger on the page that can be used to run the saving code). The form is never shown to the user, I just need it to save to a web forms for marketers database, unless there is a smarter way of course.

I can get it out just fine using

Sitecore.Forms.Core.Data.FormItem form =
 Sitecore.Forms.Core.Data.FormItem.GetForm(formID);

However, I want to

1. Change the data in the forms fields

(i.e. something like)

form.Fields["Name"] = "Test name"; 
// this wont work, I dont know how to access the field's value before I store it.

1. Save the form data in the web form for marketers-item's database in sitecore.

After I have modified the fields, I would like to save it of course.

Answer 1

The way to do it was to first get a copy of the form, set its fields using a list of AdaptedControlResult and save it using InsertForm. This way it ends up in the WFFM's data table correctly.

The customerInfo used in the code, is from a CartHelper, but it could be anything.

Code:

string formID = "{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}";
DataUri uri = new DataUri(new ID(formID));
Sitecore.Data.Items.Item formItem = Sitecore.Context.Database.GetItem(uri);

// if the item exists, run through all the known fields and add the values from the customerinfo into them.
if (formItem != null)
{
   List<AdaptedControlResult> acrList = new List<AdaptedControlResult>();
   Sitecore.Data.Items.Item[] fieldItems = formItem.Axes.GetDescendants();

   foreach (Sitecore.Data.Items.Item fieldItem in fieldItems) //.Where(x => x.TemplateName == "Field"))
   {
      if (fieldItem.Name == "E-mail")
      {
         acrList.Add(new AdaptedControlResult(new ControlResult(fieldItem.Name, System.Web.HttpUtility.UrlDecode(customerInfo.Email), string.Empty) { FieldID = fieldItem.ID.ToString(), FieldName = fieldItem.Name, Value = System.Web.HttpUtility.UrlDecode(customerInfo.Email) }, true));
         continue;
      }

   // same for all other fields.
   }

   // save data
   if (acrList.Count > 0)
   {
      AdaptedResultList arl = new AdaptedResultList(acrList);

      try
      {
         Sitecore.Forms.Data.DataManager.InsertForm(formItem.ID, arl, Sitecore.Data.ID.NewID, null);
      }
      catch (Exception ex)
      {
         // Log data here
      }
   }
}