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InvalidCastException and AutoCompleteBox

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AutoCompleteBox
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rcmp-grc
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rcmp-grc asked on 21 Sep 2018, 10:16 PM

This control has been working fine until today, but now it cannot be displayed for some reason.  This occurred after I added an empty WPF Custom Control Library project to the solution, which I have since removed...

 

The element "acbSelectPerson" could not be displayed because of a problem with Telerik.Controls.RadAutoCompleteBox:

InvalidCastException:

[A]Telerik.Windows.Controls.RadListBox cannot be cast to [B]Telerik.Windows.Controls.RadListBox. Type A originates from 'Telerik.Windows.Controls, Version=2016.2.613.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7' in the context 'LoadFrom' at location 'C:\Program Files (x86)\Telerik\UI for WPF Q2 2016\Binaries\WPF45\Telerik.Windows.Controls.dll'. Type B originates from 'Telerik.Windows.Controls, Version=2016.2.613.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7' in the context 'LoadNeither' at location 'C:\Users\000105261\AppData\Local\Microsoft\VisualStudio\14.0\Designer\ShadowCache\13qxpo3c.c3s\4xmqqihl.1si\Telerik.Windows.Controls.dll'.

Stack Trace:

   at Telerik.Windows.Controls.RadAutoCompleteBox.InitializeItemsControlPart()
   at Telerik.Windows.Controls.RadAutoCompleteBox.OnApplyTemplate()
   at System.Windows.FrameworkElement.ApplyTemplate()
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.DockPanel.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Border.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Border.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Control.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Control.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)

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Magdalena
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answered on 29 May 2019, 09:10 AM

Hi rcmp-grc!

I have exactly the same problem. Did you solve it?

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Martin Ivanov
Telerik team
answered on 30 May 2019, 09:18 AM
Hello Don,

I could suggest you to check the Resolving Design Time Errors article. It is about design-time issues, but the steps there could also resolve few run-time dll related errors. Also, I would recommend you to double check if all the referenced Telerik WPF dlls originate from the same version (example: 2018.3 911). 

Regards,
Martin Ivanov
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rcmp-grc
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answered on 30 May 2019, 02:36 PM

Hi Magdalena!

Sadly no I was unable to resolve the issue, it made no sense to me. Perhaps Martin's suggestion below will be of help... good luck!!! 

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Magdalena
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answered on 03 Jun 2019, 07:06 AM

Hi!

Thank you, rcmp-grc!

I could finally solve the problem by deleting the debug folders of all projects and deleting all temp folders in the telerik folder in the program files.

Thank yo

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rcmp-grc
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Magdalena
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Martin Ivanov
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rcmp-grc
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