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Exception occurs in XamMultiComboEditor
posted

Hi Team,

 

We are getting the below error when using XamMultiColumnCombo Editor , this issue happens randomly

 

Environment: Infragistics 14.1 ,.Net Framework- 4.0

 

Object reference not set to an instance of an object..    at Infragistics.Controls.Editors.ComboEditorBase`2.InvalidateDropDownPosition(Boolean adjustHeight)

   at Infragistics.Controls.Editors.ComboEditorBase`2.DataManager_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)

   at Infragistics.DataManagerBase.OnCollectionChanged(NotifyCollectionChangedEventArgs e)

   at Infragistics.DataManagerBase.OnDataSourceCollectionChanged(NotifyCollectionChangedEventArgs e)

   at Infragistics.DataManager`1.OnDataSourceCollectionChanged(NotifyCollectionChangedEventArgs e)

   at Infragistics.DataManagerBase.<SetDataSource>b__9(DataManagerBase instance, Object s, NotifyCollectionChangedEventArgs e)

   at Infragistics.WeakEventHandler`3.OnEvent(Object source, TEventArgs eventArgs)

   at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)

   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)

   at System.Collections.ObjectModel.ObservableCollection`1.ClearItems()

   at System.Collections.ObjectModel.Collection`1.Clear()

  • 6365
    Offline posted

    Hello Hemanath,
     

    Thank you for the provided stack trace in regards to the issue you are experiencing.
     

    I have tested the XamMultiColumnComboEditor according to the environment parameters you have mentioned and I was not able to reproduce the issue you have described.
    Would you please modify the sample application I have attached so the issue is reproduced and send it back to me? It would be great if you could provide me with detailed steps which lead to the issue as well.

    Having this information will help me further investigate this matter for you.
     

    Looking forward to hearing from you.

    XamMultiColumnComboEditor_sample.zip