InfoPath Dev

Hi,

I want to start leraning vb with InfoPath 2007 , browser form with local signatur .

with this code

Public Sub btn_code_Clicked(ByVal sender As Object, ByVal e As ClickedEventArgs)

' Fügen Sie hier Code ein.

MainDataSource.CreateNavigator().SelectSingleNode("/my:B-formular/my:system/my:dateiname", NamespaceManager)

If wert.Value <> "" Then

End If

End Sub

i get always this message:

System.Security.SecurityException
Fehler bei der Anfrage.
   bei Microsoft.Office.InfoPath.MsxmlNavigator.IsValidNode(MsxmlNode test)
   bei Microsoft.Office.InfoPath.MsxmlNavigator.MoveToFirstChild()
   bei MS.Internal.Xml.XPath.XPathChildIterator.MoveNext()
   bei MS.Internal.Xml.XPath.ChildrenQuery.Advance()
   bei MS.Internal.Xml.XPath.ChildrenQuery.Advance()
   bei MS.Internal.Xml.XPath.ChildrenQuery.Advance()
   bei MS.Internal.Xml.XPath.XPathSelectionIterator.MoveNext()
   bei System.Xml.XPath.XPathNavigator.SelectSingleNode(XPathExpression expression)
   bei System.Xml.XPath.XPathNavigator.SelectSingleNode(String xpath, IXmlNamespaceResolver resolver)
   bei Buergerschaft.FormCode.btn_code_Clicked(Object sender, ClickedEventArgs e)
   bei Microsoft.Office.InfoPath.Internal.ButtonEventHost.OnButtonClick(DocActionEvent pEvent)
   bei Microsoft.Office.Interop.InfoPath.SemiTrust._ButtonEventSink_SinkHelper.OnClick(DocActionEvent pEvent)

 I'ts nearly my first code.

Perhaps someone has an Idea or better: tip - www-adress odr book for learning step by step writing code with InfoPath and Visual Basic.

Thanks

Susanne

Hi mohnsu,

The best thing I can think of is a problem with the XPath that you put in there.  Make sure to get this XPath by right-clicking the node in Data Source taskpane and selecting "Copy XPath".  This will ensure that you make no typos.

 As for documents on writing managed code, I'm sure there are more out there, including several on our website, but here is one I quickly found with Google: http://www.microsoft.com/downloads/details.aspx?FamilyID=db1d99d9-0a31-45de-8efb-16c75e194dc3&displaylang=en