I would like to enable users to copy a chart to the clipboard, preserving appearance and transparency, so I've chosen to use PNG as the format.

However, when I paste from the clipboard, all of the transparent areas are black, which is not desirable. I don't have much experience with clip board operations, so perhaps I am doing something wrong, though other than the transparency is seem so work fine. Is there a way I can accomplish this either and either preserve the chart's transparency or at least grabbing a rendering of the chart using its current background (almost always white)?

Hey,
I've been trying to create a tooltip for a PieDataPoint, but had a couple of difficulties.
Basically, I would like to use the standard tooltip, but I could only find examples showing overriding the tooltip template for this cause. So I tried to create a similar template myself - which caused some bugs.
Mainly, I couldn't get the tooltip size to change according the content (like the strings lengths in the texblocks, I guess it'll be clearer in the xaml).
Another bug (I Believe it's another symptom of the same bug) - inside the tooltip I used a GridRows with Auto height. It seems like it calculates the row's height correctly only the second time it shows the tooltip.

This is the xaml:

Is there any way to use WPF default tooltip? If not, What am I doing wrong?

I have a RadGridView that is working nicely, but  I have trouble with the expression Column:

1) I let the expression Column show via right mouse click. It is empty.
2) I click the Header of the Explession Column
3) RadGridView obviously tries to sort the empty Expression Column and  crashes with the CallStack posted below.

I want GridView to be stable, so whatever the user does it should not crash only because the Expression column is empty

How do I achieve this?



bei System.Linq.Expressions.Expression.Lambda(Expression body, String name, Boolean tailCall, IEnumerable`1 parameters)
bei System.Linq.Expressions.Expression.Lambda(Expression body, ParameterExpression[] parameters)
bei Telerik.Windows.Data.Expressions.SortDescriptorCollectionExpressionBuilder.Sort()
bei Telerik.Windows.Data.QueryableExtensions.Sort(IQueryable source, IEnumerable`1 sortDescriptors)
bei Telerik.Windows.Data.QueryableExtensions.Sort(IQueryable source, SortDescriptorCollection sortDescriptors)
bei Telerik.Windows.Data.QueryableCollectionView.get_FilterAndSortQueryableSourceCollection()
bei Telerik.Windows.Controls.GridView.GridViewDataControl.CreateAggregateResults()
bei Telerik.Windows.Controls.GridView.GridViewDataControl.CalculateAggregates()
bei Telerik.Windows.Controls.GridView.GridViewDataControl.OnItemsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Controls.DataControl.OnItemsCollectionChangedDispatch(Object sender, NotifyCollectionChangedEventArgs e)
bei System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.DataItemCollection.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.DataItemCollection.OnCollectionViewCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.Listener`2.ReceiveWeakEvent(Object sender, TArgs args)
bei Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
bei Telerik.Windows.Data.QueryableCollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
bei Telerik.Windows.Data.QueryableCollectionView.RefreshOverride()
bei Telerik.Windows.Data.QueryableCollectionView.RefreshInternal()
bei Telerik.Windows.Data.QueryableCollectionView.RefreshOrDefer()
bei Telerik.Windows.Data.QueryableCollectionView.InvalidatePagingAndRefresh()
bei Telerik.Windows.Data.QueryableCollectionView.OnSortDescriptorsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
bei System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
bei System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.RadObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.RadObservableCollection`1.ResumeNotifications()
bei Telerik.Windows.Data.CollectionHelper.Reset(IEnumerable source, IList target, Func`2 itemConverter)
bei Telerik.Windows.Data.CollectionHelper.Reset(IEnumerable source, IList target)
bei Telerik.Windows.Data.ObservableCollectionManager.HandleCollectionChanged(IList sender, NotifyCollectionChangedEventArgs args)
bei Telerik.Windows.Data.ObservableCollectionManager.Telerik.Windows.Data.IWeakEventListener<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.ReceiveWeakEvent(Object sender, NotifyCollectionChangedEventArgs args)
bei Telerik.Windows.Data.WeakEvent.WeakListener`1.Handler(Object sender, TArgs args)
bei System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.RadObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.ObservableItemCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
bei Telerik.Windows.Data.RadObservableCollection`1.ResumeNotifications()
bei Telerik.Windows.Controls.GridView.GridViewDataControl.PerformSorting(GridViewSortingEventArgs sortingArgs)
bei Telerik.Windows.Controls.GridView.GridViewDataControl.<>c__DisplayClass9b.<Sort>b__9a()
bei Telerik.Windows.Controls.CursorManager.PerformTimeConsumingOperation(FrameworkElement frameworkElement, Action action)
bei Telerik.Windows.Controls.GridView.GridViewDataControl.Sort(GridViewColumn column, Boolean appendToExisting)
bei Telerik.Windows.Controls.GridView.GridViewHeaderCell.RequestSort(Boolean appendToExisting)
bei Telerik.Windows.Controls.GridView.GridViewHeaderCell.PerformUserSort()
bei Telerik.Windows.Controls.GridView.GridViewHeaderCell.OnMouseLeftButtonUp(MouseButtonEventArgs e)
bei System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
bei System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
bei System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
bei System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
bei System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
bei System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
bei System.Windows.Input.InputManager.ProcessStagingArea()
bei System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
bei System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
bei System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
bei System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
bei System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
bei MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
bei MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
bei System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
bei MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
bei System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
bei MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
bei MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
bei System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
bei System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
bei System.Windows.Threading.Dispatcher.Run()
bei System.Windows.Application.RunDispatcher(Object ignore)
bei System.Windows.Application.RunInternal(Window window)
bei System.Windows.Application.Run(Window window)
bei System.Windows.Application.Run()
bei Roka3.App.Main() in C:\RZVN\Roka3\Roka3\obj\x86\Debug\App.g.cs:Zeile 0.
bei System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
bei System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
bei Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
bei System.Threading.ThreadHelper.ThreadStart_Context(Object state)
bei System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
bei System.Threading.ThreadHelper.ThreadStart()

My application contains a `RadGridView` control, which has the columns defined in the XAML.  The last column is a `GridViewImageColumn` that is bound to one of several different images in the program resources, based on the value of a property in the ViewModel object.  The images represent a quality of data enumeration: Good is a Green circle, OK is a Yellow circle, Bad is a Red circle, and N/A is a Grey circle.

Everything displays fine until you click on the Filter icon and open the filtering box.  What gets displayed at that point are the pack URIs to the image resources that are being displayed, not the images.  I'd rather have the images displayed, or a string that describes what the image represents (that is, Green / Yellow / Red / N/A).

How do I modify the control so it displays the images in the Filter box instead of the image URIs?

I have one project (VS 2013, .NET 4.5, Tools 2014.3.1021.45)  where a RadRichTextBox is not shown. Looking for the properties in Visual Studio there is no ActiveEditorPresenter, no Style, no Template. The RRTB is one pixel high. Same when examining the properties during runtime. I have another project where these properties are set automatically, thus the RRTB is shown as expected.
Can you give me a hint where I should start searching for the error? All references are set, there is also a reference to an implicit style for RichTextBoxUI. The two projects differ in that one has all themes in a separat sub-project, the other one not. Could this be the error?

TIA
Neils

Hi,

I'd like my Diagram's MeasurementUnit to be 11 pixels, but the Labels always display the interval in pixel units. Is there way to specify a custom MeasurementUnit? Or how would I go changing the LabelContainer style to do this?

Thanks!

Hi Everyone!

I wanna Draw LJ Chart with radChart controls, but one problem is:

How to customize axisY label like the attachment showing .

And thanks for anyway!

There is problem with the DataContext of children inside the GridView:
For some reason, the DataContext of the GridViewHeaderRow gets overwritten by a local value (of type System.Object). Therefore, the property is not inherited and it is not possible to bind to members of the GridView DataContext any more!

The value is overwritten in DataCellsPresenter.cs (the corresponding line marked bold), although I don't see any reason to do this:

Hi,
My Telerik control version is 2014.3.1202.40 and I'm using the Expression Dark theme.
I'd like to modify the color of menu item and it background when the menu item is highlighted (i.e. when the mouse is over). For example, in the attached screen dump, I'd like to set "Copy" to red, and its background to green. I try to find the colors in Telerik.Windows.Controls.Navigation.xaml, but don't know which item to change. Could you help me with that? Thanks.

Regards,
Gong

hi I am seeing this problem just like this feedback posting http://feedback.telerik.com/Project/143/Feedback/Details/66990-on-smaller-resolution-the-datetimepickers-popup-is-showing-wrong

this is what we see below



any workaround for this? thanks.