InfoPath Dev

I am using Infopath 2007 and vb.

I have a dataset
Aliases Y/N
AliasesGroup (repeating)
   Aliases

I want the user to answer Y/N to the Aliases Y/N prompt and if the answer is Yes then display the Aliases.  This works fine.

If Aliases are already present and the User changes the Y/N prompt to N  I prompt the user on the changing event to see whether they really want to delete the Aliases. 
If they say no  then I rollback the change - this works fine
If they say yes - they really want to delete the Aliases I try to set the value of the first one present to "" and delete the rest.  In both cases I get the error Operation is not valid, because of the current state of the object.  How do I find out what is the state of the object ?  Is there a better way to do this ? - My code is below 

Public Sub AliasesYN_Changing(ByVal sender As Object, ByVal e As XmlChangingEventArgs)
' Ensure that the constraint you are enforcing is compatible
' If you are changing the alias to No and Aliases already exist prompt user

If e.OldValue = True And e.NewValue = False Then
Dim reply As DialogResult = MessageBox.Show("This will delete the existing Aliases", "Do you want to continue", MessageBoxButtons.OKCancel)

If reply = DialogResult.Cancel Then
   e.CancelableArgs.Cancel = True
   e.CancelableArgs.Message = "The change has been rolled back"
   e.CancelableArgs.MessageDetails = "Changes have been rolled back, because they will be overwritten by changes in the Directory next time the contacts are checked"

Else
    Dim grp As String = "/my:AliasesGroup"
    Dim fld As String = "/my:AliasesGroup/my:Aliases"
    Dim nav As XPathNavigator
    Dim itgroup As XPathNodeIterator

    nav = e.Site.CreateNavigator.SelectSingleNode(grp, NamespaceManager)
    itgroup = nav.Select(fld, NamespaceManager)

    Dim norecs As Integer = itgroup.Count
    Dim mov As Boolean = itgroup.MoveNext

       While mov = True
             itgroup.Current.SetValue("")
             itgroup.MoveNext()
             While mov = True
                    itgroup.Current.DeleteSelf()
                    itgroup.MoveNext()
             End While
       End While

End If

End If

End Sub

 

Off the top of my head, the data is read-only during the changing/validating events.

What is means is that you should do your changes in changed event instead:

1. In changing, do your test for cancellation and roll out as appropriate

2. In changed, do the changes you wanted

Note that if you cancelled #1, #2 would not happen so you no longer need to have the "else" clause.

Hope this makes sense!

Thank you for your help.  I didn't realise (or had forgotten) about the data being read only during changing/validating events.  Yes it does make sense.  I have got to the next stage....

I have set the following when the user tries to remove the last item in a group on the group_changing event
e.CancelableArgs.Cancel = True
e.CancelableArgs.Message = "Cannot Remove the last item"
e.CancelableArgs.MessageDetails = "The last item cannot be removed, Select N in Alias Y/N"

But the message I get displayed is
The item cannot be removed
Invalid update: A custom constraint has been violated.

If I comment out the code in the event... the item gets removed.  So my code is definitely being called.  But I don't know where my message is going and why the (presumably) standard message is coming from.

Catharine

Hmm, I tried to re-create the problem but I got the right message. If you cannot resolve this issue you can maybe attach the form which has the problem (don't forget to include source code) and I could take a look.

Just wondering if you got a resolution to this - I am encountering the same problem - the error message is always the default error message, no matter what I put in the as the Message or MessageDetails.

Ideally, I would like to turn off this message altogether - do you know if there is a way to do this?

Thanks in advance for any assistance!

I am also facing the same problem.

I have written following code in changing event of repeating table.

//////////////// 

e.CancelableArgs.Cancel = true;

e.CancelableArgs.Message= "Can not insert data";

e.CancelableArgs.MessageDetails = "Not allowed to insert new details";

////////////////

 But i am getting following infopath default message,

Invalid update: A custom constraint has been violated.

 

Please help....

 

Hi David,

I am facing problem while giving cutom message to the user while inserting new table by clicking insert item of a repeating table.

I m doing following in RepeatingTable-changing event

public void RepeatingTable_Changing(object sender, XmlChangingEventArgs e)

{

if (e.Operation == XmlOperation.Insert)

{

e.CancelableArgs.Message = "Can not insert new address";

e.CancelableArgs.MessageDetails = "Not allowed to insert new address data";

e.CancelableArgs.Cancel = true;

}

}

But I always get default Infopath message

Message - The item can not inserted. 

Message Details -" Invalid update: A custom constraint has been violated."

 

Is there any way to avoid this ?

Thanks,

Makarand 

 

Hi All,

 Invalid update: A custom constraint has been violated. It happens when editing a textbox inside a repeating section or deleting a repeating section. Please help.

 

Thanks, 

Kishu11

did you ever get a resolution to this?  I am having the same issue.  Thanks.

No, I still haven't. I noticed that it only happens when a field is inside a repeating section. Hopefully someone from here can help us with this. :S

I am having the same problem. Is there a solution?