Code

Re: VSTA "ReplaceSelf" programming issue/ clearing section fields challenge

seidensc — Mon, 26 Oct 2009 13:40:39 GMT

Thanks again Jimmy; you've been very helpful!

Re: VSTA "ReplaceSelf" programming issue/ clearing section fields challenge

Jimmy — Sat, 24 Oct 2009 02:31:31 GMT

Are you saying you're looking for the thisXDocument.UI.confirm() function?

In IP 2007 you should just use the usual System.Windows.Forms API:

DialogResult response = MessageBox.Show("Are you sure you want to do this?", string.Empty,
MessageBoxButtons.YesNo);
if (response == DialogResult.Yes)
{
// Do stuff
}

Re: VSTA "ReplaceSelf" programming issue/ clearing section fields challenge

seidensc — Fri, 23 Oct 2009 19:52:32 GMT

The other groups are now working too with a little help with the debugger.

I'm still stuck on how to throw up a ok/cancel that the fields are about to be cleared by collapsing a section. If you can shed any light on how to do this it would be appreciated. Note environment on my last post...

Re: VSTA "ReplaceSelf" programming issue/ clearing section fields challenge

seidensc — Fri, 23 Oct 2009 19:19:17 GMT

Thanks for your reply Jimmy.

I added the logic to the Changed event as you indicated. It worked well.

On to adding the other groups. This was not too successful. I have to spend some time to see what I did wrong; not sure what, but all I did was copy the code and paste the names in from xcopy.

I also looked at the ok/cancel functionality. So far I can't find out how to instantiate xdocument to get at the UI. It looks like it should be automatic but under VS2008/InfoPath 2007 it is not. I'm not familiar enough with the API to know if it was moved, changed, or what.

Anyway, a big thank you for making my day brighter with the tibit you passed along.

Steve

Re: VSTA "ReplaceSelf" programming issue/ clearing section fields challenge

Jimmy — Fri, 23 Oct 2009 00:33:09 GMT

InfoPath will not allow you to change the contents of the data source in a Changing event. Please try adding that code to AcademicPerformance's Changed event.

VSTA "ReplaceSelf" programming issue/ clearing section fields challenge

seidensc — Thu, 22 Oct 2009 18:20:32 GMT

This is my first InfoPath form. We have InfoPath as part of our desktop install. SharePoint is coming but will not be here until next year. I also have VSTA installed. I state this in case it makes a difference on this post.

I have the following fields/containers within the myfields container:

AcademicPerformance (Check box)
AcademicPerformanceGroup
CurrentGrade*
    Tutor (Check box)
  TutorGroup
       TutorName
        TutorPersonID

On the AcademicPerformanceGroup I have conditional formatting which hides the section if the AcademicPerformance check box is false. What I have noticed is that if a "form filler" enters info into the Academic Performance and Tutor groups and then uncheck the Academic Performance check box the section is collapsed but the data remains. I would like the default behavior of unchecking the box to throw up a warning (next programming iteration) and then clear the subordinate fields before collapsing.

This is what I have come up with so far:

using Microsoft.Office.InfoPath;
using System;
using System.Windows.Forms;
using System.XML;
using System.Xml.XPath;
using mshtml;

namespace StudentReferral
{
public partial class FormCode
{
    private string initialAPData;
    public void InternalStartup()
    {
      EventManager.XmlEvents["/my:myFields/my:AcademicPerformance"].Changing += new XmlChangingEventHandler(AcademicPerformance_Changing);
      EventManager.FormEvents.Loading += new LoadingEventHandler(FormEvents_Loading);
    }
    public void AcademicPerformance_Changing(object sender, XmlChangingEventArgs e)
    {
      String fieldValue = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:AcademicPerformance", NamespaceManager).Value;
      if (fieldValue == "false")
      {
MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:AcademicPerformanceGroup", NamespaceManager).ReplaceSelf(initialAPData);
      }
    }

    public void FormEvents_Loading(object sender, LoadingEventArgs e)
    {
      initialAPData = MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:AcademicPerformanceGroup", NamespaceManager).OuterXml;
    }
}
}

First of all, is there a better way of clearing several containers/fields within a section(s) rather than resorting to code?
If not, I am getting a little error that if someone can see I would greatly appreciate it. Once I get beyond the error I plan to add an ok/cancel dialog and then add the code to all my expanding sections.

When the "MainDataSource.CreateNavigator().SelectSingleNode("/my:myFields/my:AcademicPerformanceGroup", NamespaceManager).ReplaceSelf(initialAPData);" statement executes I receive the following error:

A first chance exception of type 'System.InvalidOperationException' occurred in Microsoft.Office.InfoPath.Client.Internal.Host.Interop.dll

InitialAPData (after the form load event) =
<my:AcademicPerformanceGroup xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2009-09-28T17:12:30">
  <my:CurrentGrade></my:CurrentGrade>
  <my:Tutor>false</my:Tutor>
  <my:TutorGroup>
   <my:TutorName></my:TutorName>
   <my:TutorPersonID xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:nil="true"></my:TutorPersonID>
  </my:TutorGroup>
</my:AcademicPerformanceGroup>

Any ideas why this error would be encountered?