Hey there,

I'm replacing your old Chart component with the new ChartView components. One of them is a pie chart and when I started replacing it a question appeared: How can I format the Label (I know of LabelFormat, but what are my options?). I have also found this site here (http://www.telerik.com/help/wpf/radchartview-series-pieseries.html) but the mentioned LabelTemplate is no longer there. I just want to give the Chart a ItemsSource where each object contains a count and a label, so that I can bind the Chart to it. I do not want to specify each datapoint in code, as you did in all your examples. I'm looking for a way to do this via databinding. Could you please provide an example of this? Perhaps you could extend the WPF Demos or the documentation too.

Best Regards,
Peter

I am using UI for WPF 2014.1.0224.40.

I tried to install the extension on my VS 2013 Premium to enable coded ui support. But when I click Record button on Test Builder, it keeps popping up "The following package for Coded UI is in an inconsistent state: ..."

Hello,

I am using a PropertyGrid control but I need it to be very small, I set its FontSize property to 9 and I tried to change the Height property of the PropertyGridField by using a style:


When I do that, the controls within the PropertyGridField don't adjust and they look kind of odd. I am attaching an image showing the result.

Is there a way to accomplish what I am trying to do?

Thanks in advance,

Alberto

I am looking for new ways to improve the load performance of the RadGridView control.
I already had a look at the tips from your site, and have followed many of them while others do not apply as we have some special requirements which I could not achieve using your default styles.

I found that reducing the number of FrameworkElements in the Grid greatly improves the loading performance. Using Snoop, I found that we had nearly 20000(!) FrameworkElements on a full-page GridView (with row-virtualization enabled, as we found that column-virtualization severely reduced the horizontal scrolling performance). After doing some optimizations, I was able to reduce the number of elements to now 5200, reducing the loading time from more than 5 seconds to 1.5 seconds (on a fast development PC - it could still be much slower on a user PC).

One big impact factor is the GridViewCell template. If you have a look at the template (in our case the VisualStudio2013 version), it has 174 lines of code and ~12 FrameworkElements! By creating my own template (specifically for WPF, using triggers), I was able to reduce it to 32 lines of code and 2 FrameworkElements (1 border for cell separation + 1 ContentPresenter), maintaining the same look as before (maybe not every single behavior is reproduced, but the ones that we use). This single optimization leads to a reduction of loading time by ~1.4 seconds!

Now I would like to further reduce the number of elements. One Idea was to merge the GridViewCell with the border and the ContentPresenter - having 1 element instead of 3. The next step would be to implement some kind of "cell renderer" to draw simple cell templates (like the TextBlock) in the OnRender event, saving one (or more) further elements per cell. To achieve this, I have to derive from GridViewCell(Base).

However, there is one problem: While the CreateItem method in the RadGridView is protected (so I could create a derived GridViewRow), the CreateItem method in the GridViewRow is internal, effectively stopping me from creating my own implementation of GridViewCell. I am wondering why it was decided to do it this way? I see that you are accessing the method from outside the row, so protected would not be an option. But what about "protected internal"? Changing it to this should not break an usage - but allows to greatly improve usability of the class.

Alex

Hi,

I work creating at runtime a big report (250/300 pages). Any page contains 2/3 charts.
All works good with good performances.

Now, if I save the report as PDF the application freezes for a lot of minutes waiting the end of process (and it consumes >3Gb memory).

Is possible to show a Progress Bar with saving info and progress (and reduce the memory consuption)?

Thanks,
marc.

Hi,
How can i open the filtering control popup for a given column code behind?

For example,
private void ShowFilteringControl(GridViewDataColumn column)
{
    myFilteringControl = new ????;
    myFilteringControl.Show();
}

or, something like that?

Thanks.

Hi guys,
My requirements are to load an image as a provider but with JPW mapping details. 
For example:

0.0000478933
0
0
-0.0000313467
44.6320800
48.8499400


I thought about using LocationRect but it is unclear where the parameters in the FILE should be place in the method call. 
Can you please post an example of JPW with image as provider? 

Thanks,
Max.
 

I need to style a RadStacked100DataBar similar to the attached picture, or I need to use a different control.  Do you guys have an example of the templates used for the RadStacked100DataBar and how best to re-template them to put a label in the center of each "section". 

Thank You
Paul

Hi, I have a problem with candlesticks in CandlestickSeries. They start overlapping over each other after zomming out.
What property is responsible for gaps between candles?

Changing the MinWidth like this doesn't help:
                  <telerik:CandlestickSeries.DefaultVisualStyle>
                        <Style TargetType="telerik:Candlestick">
                            <Setter Property="MinWidth"  Value="1"/>
                        </Style>
                    </telerik:CandlestickSeries.DefaultVisualStyle>

Thanks
Denis

Hi,

After updating the version mentioned on the title, the project started to throw the following exception:

System.NullReferenceException was unhandled
  _HResult=-2147467261
  _message=Object reference not set to an instance of an object.
  HResult=-2147467261
  IsTransient=false
  Message=Object reference not set to an instance of an object.
  Source=Telerik.Windows.Controls.Navigation
  StackTrace:
       at Telerik.Windows.Automation.Peers.RadRadialMenuItemAutomationPeer.GetChildrenCore()
       at System.Windows.Automation.Peers.AutomationPeer.EnsureChildren()
       at System.Windows.Automation.Peers.AutomationPeer.UpdateChildrenInternal(Int32 invalidateLimit)
       at System.Windows.Automation.Peers.AutomationPeer.UpdateChildren()
       at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
       at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
       at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
       at System.Windows.ContextLayoutManager.fireAutomationEvents()
       at System.Windows.ContextLayoutManager.UpdateLayout()
       at System.Windows.UIElement.UpdateLayout()
       at System.Windows.Interop.HwndSource.Process_WM_SIZE(UIElement rootUIElement, IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam)
       at System.Windows.Interop.HwndSource.LayoutFilterMessage(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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, 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)
  InnerException: