I have a List called “myResults”. When the list contains at least one item, I’m trying to populate a GridView w/ info for the list; the GridView is called “gvMyResults”. However, sometimes, during this update of the DataSource, I get an exception saying, “Bounds cannot be changed while locked”, and a red X is displayed across my GridView. I added this Dispatcher wrapper around my update, but I’m still seeing the same error. It’s difficult to troubleshoot, because it does not happen every time. Also, this GridView is a Telerik RadGridView.
Does anyone know how to stop this “bounds cannot be changed while locked” error?
if (myResults.Count > 0)
{
Dispatcher.CurrentDispatcher.Invoke(
DispatcherPriority.Normal,
(Action)delegate()
{
this.gvMyResults.DataSource = myResults;
});
}
I've tried this as well, but am getting the same Exception:
_Context.Send(x =>
{
this.gvMyResults.DataSource = myResults;
}, null);
Exception / Stack-Trace (as requested):
Type=System.InvalidOperationException
Source=Telerik.WinControls
Message=Bounds cannot be changed while locked.
StackTrace:
at Telerik.WinControls.RadElement.SetBoundsCore(Rectangle bounds)
at Telerik.WinControls.RadElement.set_Size(Size value)
at Telerik.WinControls.RadElement.SetLayoutParams(PointF newOffset, SizeF newSize)
at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
at Telerik.WinControls.UI.RowsContainerElement.ArrangeOverride(SizeF finalSize)
at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
at Telerik.WinControls.UI.ScrollViewElement`1.ArrangeViewElement(RectangleF viewElementRect)
at Telerik.WinControls.UI.ScrollViewElement`1.ArrangeOverride(SizeF finalSize)
at Telerik.WinControls.RadElement.ArrangeCore(RectangleF finalRect)
at Telerik.WinControls.RadElement.Arrange(RectangleF finalRect)
at Telerik.WinControls.Layouts.ContextLayoutManager.UpdateLayout()
at Telerik.WinControls.RadElement.UpdateLayout()
at Telerik.WinControls.UI.GridVisibilityHelper.EnsureRowVisible(GridViewRowInfo rowInfo)
at Telerik.WinControls.UI.GridTableElement.EnsureRowVisible(GridViewRowInfo rowInfo)
at Telerik.WinControls.UI.GridTableElement.EnsureCellVisible(GridViewRowInfo rowInfo, GridViewColumn column)
at Telerik.WinControls.UI.GridTableElement.UpdateViewCore(Object sender, DataViewChangedEventArgs args)
at Telerik.WinControls.UI.GridTableElement.UpdateView(Object sender, DataViewChangedEventArgs args)
at Telerik.WinControls.UI.GridTableElement.ProcessTemplateEvent(GridViewEvent eventData)
at Telerik.WinControls.UI.GridTableElement.Telerik.WinControls.UI.IGridViewEventListener.ProcessEvent(GridViewEvent eventData)
at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(GridViewEvent gridEvent, PriorityWeakReferenceList list, GridEventProcessMode processMode)
at Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(GridViewEvent gridEvent)
at Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(GridViewEvent gridEvent)
at Telerik.WinControls.UI.GridViewSynchronizationService.FlushEvents()
at Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewEvent gridEvent)
at Telerik.WinControls.UI.GridViewSynchronizationService.RaiseCurrentChanged(GridViewTemplate template, GridViewRowInfo row, GridViewColumn column, Boolean user)
at Telerik.WinControls.UI.GridViewTemplate.CollectionView_CurrentChanged(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at Telerik.WinControls.Data.RadCollectionView`1.OnCurrentChanged(EventArgs args)
at Telerik.WinControls.Data.RadCollectionView`1.SetCurrentPositionCore(Int32 newPosition, Boolean forceNotify, CurrentChangeReason reason)
at Telerik.WinControls.Data.RadDataView`1.SyncCurrent(TDataItem item)
at Telerik.WinControls.Data.RadDataView`1.RebuildData(Boolean notify)
at Telerik.WinControls.Data.RadDataView`1.RefreshOverride()
at Telerik.WinControls.Data.RadDataView`1.ProcessCollectionChanged(NotifyCollectionChangedEventArgs args)
at Telerik.WinControls.Data.RadCollectionView`1.source_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
at Telerik.WinControls.Data.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
at Telerik.WinControls.Data.RadListSource`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
at Telerik.WinControls.Data.RadListSource`1.EndUpdate(Boolean notifyUpdates)
at Telerik.WinControls.Data.RadListSource`1.Initialize()
at Telerik.WinControls.Data.RadListSource`1.Bind(Object dataSource, String dataMember)
at Telerik.WinControls.Data.RadListSource`1.set_DataSource(Object value)
at Telerik.WinControls.UI.GridViewTemplate.set_DataSource(Object value)
at Telerik.WinControls.UI.RadGridView.set_DataSource(Object value)
at MyProject.MyWindow.<>c__DisplayClass2.<DisplayCallerInfo>b__0()