Error HRESULT E_FAIL has been returned from a call to a COM component.

[Alexander]

Hi, I add item o TreeView using "_treeView.Items.Add()", then I add child item to this item.

When I remove the first item using _treeView.Items.Remove() the error occurs:

"Error HRESULT E_FAIL has been returned from a call to a COM component."

at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.Collection_RemoveAt[T](PresentationFrameworkCollection`1 collection, UInt32 index)
at System.Windows.PresentationFrameworkCollection`1.RemoveAtImpl(Int32 index)
at System.Windows.Controls.ItemCollection.RemoveAtImpl(Int32 index)
at System.Windows.Controls.ItemCollection.RemoveImpl(Object value)
at System.Windows.Controls.ItemCollection.RemoveInternal(Object value)
at System.Windows.PresentationFrameworkCollection`1.Remove(T value)

Can you help me please? Thanks.

[Kiril Stanoev]

Hello Alexander,

I was not able to reproduce this issue. Could you please take a look at the attached project and let me know if I am missing something. I'd be glad to further assist you.

Kind regards,
Kiril Stanoev
the Telerik team