Please add the Contour series for showing the scatter (X,Y) lines which are connecting the points with the equial Z- coordinate. Currently a scatter 3D surface (X,Y,Z)  can now be shown only as 3D chart.

Often it is necessary to show 3D surface as 2D chart with lines connecting (X,Y) points with "same Z-level" .

Samples:

• Geographic map showing the contour lines of the same height: https://en.wikipedia.org/wiki/Contour_line ,
• Map of the points with the same temperature inside the 3D container,
• ...

References:

• https://www.infragistics.com/help/winforms/datachart-scatter-contour-series 
• https://www.infragistics.com/help/winforms/geographicmap-using-geographic-contour-line-series 
• https://mathworld.wolfram.com/ContourPlot.html 

RadGridView throws error 'DataGrid_DisplayIndexOutOfRange Parameter name: displayIndex'

when SelectionUnit is set to Mixed

SelectionUnit = "FullRow" and SelectionUnit="Cell" works fine.

Please find attached solution for crash.

Telerik version which we are using is UI for WPF 2021

In attached demo from list of data Select any item and click on isolate button above or apply filter from column filter dialog. it throws this error

Hi Telerik-Team,

on of our user found a bug when you flick with the mouse on resizing a column.

The system crashes. Here is the message and stacktrace:

Message
   Object reference not set to an instance of an object.
   
StackTrace
   at Telerik.Windows.Controls.GridView.GridViewHeaderCell.HeaderToResize(Object gripper)
   at Telerik.Windows.Controls.GridView.GridViewHeaderCell.OnColumnHeaderResize(Object sender, DragDeltaEventArgs e)
   at System.Windows.Controls.Primitives.DragDeltaEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
   at System.Windows.Controls.Primitives.Thumb.OnMouseMove(MouseEventArgs e)
   at System.Windows.UIElement.OnMouseMoveThunk(Object sender, MouseEventArgs e)
   at System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Window.ShowHelper(Object booleanBox)
   at System.Windows.Window.Show()
   at System.Windows.Window.ShowDialog()
   at Test_WPF.MainWindow.StartInstance(Type program) in C:\Users\masi\source\repos\NEMO\Test_WPF\MainWindow.xaml.cs:line 51

I have attached two examples. One in our app and a test application.

I hope you can figure out what is going on.

Best regards,

Mats

We are using RadRichText box along with HtmlDataProvider to create new para in specific notes- comments. As our application heavily relay on adding comments in html format when adding/ forwarding application to another user.

As a main control RadRichText box is working fine and dev team is recommending to use it in Production. But issue happens when we are rendering all comments as list associated to one application. Currently we have some application having more than 200 comments.

We used RadRichtext box to render HTML as readonly. but I impacted performance. Page take enough time to load contents. 

Currently we replaced RadRichText box with HtmlRenderer.WPF (HtmlPanel) control, which is much efficient compare to Telerik control. However HtmlPanel has its own limitation.

I wish if Telerik has such lightweight control to render HTML content in more efficient way, which does not effect application performance.

Hi,

Range name becomes incorrect after removing row in a spreadsheet.

Use case:

- Set range name to 'test' on cell A5

- Remove row 4 (option entire row)

Observed:

- Range name is still located on cell A5

Expected:

- Range name 'test' on cell A4. Similar behavior as in MS Excel

Can be reproduced using the Telerik WPF demo app.

The named ranges are not updated after rows columns are inserted.

When upgrading to UI for WPF R3 2021 (NuGet), we are unable to build our projects because of a broken reference to Microsoft.VisualStudio.DesignTools.Extensibility. We also noticed that for each dll, a corresponding *.DesignTools reference was added to the project when we did the update - maybe there is a connection?

How to reproduce

I was able to reproduce the problem by creating a new .NET Framework app (default VS template, .NET Framework 4.8) and adding the Telerik.Windows.Controls.for.Wpf nuget package (see attached screenshot). As soon as the package is added, I get the following IntelliSense warning:

Severity Code Description Project File Line Source Suppression State
Warning Unknown build error, 'Could not load file or assembly 'Microsoft.VisualStudio.DesignTools.Extensibility, Version=16.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)' WpfApp5 Build

When trying to build the project, I get the following error:

Severity Code Description Project File Line Source Suppression State
Error Unknown build error, 'Cannot resolve dependency to assembly 'Microsoft.VisualStudio.DesignTools.Extensibility, Version=16.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.' WpfApp5 Build

Manually adding the nuget package "Microsoft.VisualStudio.DesignTools.Extensibility" resolves the problem.

I would expect the telerik packages to reference the mentioned package as their dependency if it is required (allowing Visual Studio to resolve the missing reference automatically). If this is not possible for some reason, this should at least be noted in the documentation.

Regards

Simon Müller

Hofmann Fördertechnik GmbH

Hi,

This issue was referenced all the way back in 2017 in this post for Win Forms, but it appears it was never actually resolved; only a workaround was provided. I don't think this workaround will work for me, however, because I am binding to the RtfDataProvider in xaml and therefore it makes the changes to the document string before I am able to do a manual replacement of "rtf1" where it only had "rtf" for the version tag before. While changing the tag after the fact will fix the issue of it not being recognized in the other software we use, it still causes bloat because of the fact that it most cases it over triples the amount of raw text in the returned string when the textbox does not properly apply the rtf version tag.

Below is an example of the greatly enlarged amount of data before and after this error occurs:

"S11111^A^1^","{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Arial; } }\viewkind4\uc1 \f0\fs20 Measurements: \par \tab Neck to Fundus \tab \tab 1.5 cm \par \tab Diameter at Fundus \tab \tab 3.0 cm \par \tab Color \tab \tab \tab \tab Green-Tan \par \tab Wall Thickness \tab \tab 1.0 cm \par \tab Mucosa \tab \tab \tab Velvety \par  \par No Cholesterolosis Is Identified  \par \par No Bile Identified \par \par No Gallstones Are Identified \par \par Summary of Sections: \par \tab Received in Bag and Formalin. The cystic duct margin and representative sections of gallbladder fundus and body are submitted in 1 cassette. \par \par KG/sjh }"^""$$$"

"S11111^A^1^","{\rtf\ansi\ansicpg1252\uc1\deff0\deflang1033{\fonttbl{\f0 Verdana;}{\f1 Arial;}}{\colortbl\red0\green0\blue0 ;}{\*\defchp\ltrch\f0\fs20\i0\b0\strike0\cf0\ulc0\ulnone}{\*\defpap\sl276\slmult1\ql\sa180\ltrpar}{\stylesheet{\s0\sqformat\spriority0\ltrch\f0\fs20\i0\b0\strike0\cf0\ulc0\ulnone\sl276\slmult1\ql\sa180\ltrpar Normal;}{\*\ts2\tsrowd\spriority59\trbrdrt\brdrnone\trbrdrb\brdrnone\trbrdrl\brdrnone\trbrdrr\brdrnone\trbrdrh\brdrnone\trbrdrv\brdrnone\trgaph0\trpaddl75\trpaddr75\trpaddt0\trpaddb0\clpadft3\clpadt0\clpadfr3\clpadr0\clpadfl3\clpadl0\clpadfb3\clpadb0\tsvertalt\ltrch\f0\fs20\i0\b0\strike0\cf0\ulc0\ulnone\sl276\slmult1\ql\sa180\ltrpar Table Normal;}}\nouicompat\viewkind4\paperw12240\paperh15840\margl1425\margr1425\margt1425\margb1425\deftab720\sectd\pgwsxn12240\pghsxn15840\marglsxn1425\margrsxn1425\margtsxn1425\margbsxn1425\headery720\footery720\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone Measurements: }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone \tab Neck to Fundus \tab \tab 1.6 cm }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone \tab Diameter at Fundus \tab \tab 3.0 cm }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone \tab Color \tab \tab \tab \tab Green-Tan }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone \tab Wall Thickness \tab \tab 1.0 cm }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone \tab Mucosa \tab \tab \tab Velvety }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone  }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone No Cholesterolosis Is Identified  }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone No Bile Identified }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone No Gallstones Are Identified }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone Summary of Sections: }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone \tab Received in Bag and Formalin. The cystic duct margin and representative sections of gallbladder fundus and body are submitted in 1 cassette. }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}\pard\sl240\slmult1\ql\ltrpar{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone KG/sjh }{\ltrch\f1\fs20\i0\b0\strike0\cf0\ulc0\ulnone\par}}"^""$$$"

If there is a way that I can use the workaround in that post to prevent this bloating of the data while still using my current setup with bindings, I would be happy to do so, but as it is I don't think that's the case. It seems like this is clearly a bug and something that should have a real fix on the control and not a workaround after all this time, but if that's not the case and it was left as is for a reason, I'd be happy to hear that reason.

Thanks in advance for the help.

It would be very useful for us if the RadWebCam control (WPF or WinForm) could support ONVIF Profile S

Thanks

Please add support for cell content rotation.

I know that this is listed in the known unsupported features article, but just to be extra clear about what I am requesting, here's an example from Microsoft Excel

Hi,

I found a bug when drag&dropping selected tree nodes (extended multi-selection) when the tree is virtualized. Items that never got into view are missing from the Payload Manager Data object. If virtualization is off, works as expected.

Please see modified sample for demonstration. I added 200+ items to League A -> Division A. Select the first item, quickly scroll by dragging vertical scrollbar to the bottom of the list and extend selection to the whole list. Then perform drag and drop. Note, not all items were moved.

Also, the drag visual helper moves and updates very very slowly when dragging hundredths of objects. In our application, we have thousands of objects, which makes it unusable

Thank you for a quick fix.

Tomas.

Like RanTabControl

Need this for an application with lots of tabs wich would not fit in the top or bottom template.

Maybe it works with a customizable TabStripTemplate where i can implement e.g. a GridView or something

Like this with a scrollbar (used TabControl PRISM example for this)