Is there a way to move the scroll bar on a live updating line chart? 

I want to set it to a position and size then every 50 or so data points have it shift

Hello,

I have a View which I want to split into 4 sub-parts, flexibly. To do this I tried to take advantage of the RadLayoutControl. In one of the 4 sub-, I place a RadGridView which binds to a collection giving it exactly 1000 rows. The performance with this configuration is terrible, and not usable.

If I comment out the usage of the RadLayoutControl and it's sub-elements, and just show the same GridView, the performance is fine.

I am aware of the performance restrictions on the RadGridView, please see:

https://docs.telerik.com/devtools/wpf/controls/radgridview/troubleshooting/performance
https://docs.telerik.com/devtools/wpf/controls/radgridview/performance/tips-tricks
which are somewhat redundant as they show the same information.

Most likely the "problem" is:
RadGridView is placed in a control that measures its children with infinity - such controls are:
ScrollViewer
StackPanel (when vertical it measures with infinite height and when horizontal - with infinite width)
Grid with RowDefinition Height="Auto" or ColumnDefinition Width="Auto".

I do not place the GridView in any Grid where Height="Auto" or ColumnDefinition Width="Auto".
However, looking at the visual trees in snoop, it is clear that "LayoutControlGroup", "LayoutControlExpanderGroup" etc. all add their own Grids and ScrollViewers.

How can I then put a GridView inside of a nested set of Layout Controls and get it to work normally?

For your information, my nested Layout Controls are very similar to those in the Demo Code Samples for "Layout Control", "First Look". Nothing special.

Thanks,
Mark

Hello,

I have RadCartesianChart with DateTimeContinuousAxis and LinearAxis (DateTime vs double representation). And I want to to use KeepExtremesFunction, but exception occurs:

System.InvalidOperationException: 'No generic method 'KeepExtremes' on type 'Telerik.Windows.Controls.ChartView.ChartSamplingFunctions' is compatible with the supplied type arguments and arguments. No type arguments should be provided if the method is non-generic. '

Bay the way ChartMaxFunction, ChartMinFunction or MemberFirstFunction works fine.

I'm wondering if you can suggest an approach to achieve an effect I want (which I describe below).  I don't think so but I thought I would check.

I'm using a NumericUpDown to show length values of type double.    I want to be able to make the Up/Down buttons change the displayed value to an even multiples of a a whole number, regardless of the starting value or the direction (up vs down)  of the button they hit.  Is there a way to do this?

For example, suppose the initial value is 1.23.   

If the user hits the "Up" button, I want the value to change from 1.23 to 2.00. But the next time he/she hits it I want it to change from 2.00 to 3.00
But if the user hits the "Down" button, I want the value to change from 1.23 to 1.00.  The next time, I want it to change from 1.00 to 0.00

If there were separate "SmallChange" properties for the up and down directions, this would be easy.   I could bind them and do the math whenever the value changes.  But I only have the one "SmallChange" property.

If there were some way for me to insert a "CoerceValue" callback into the "Value" property, I could do that.  But I don't believe that is possible.  If it is, please tell me how

Is there any way to achieve this?

Are the WPF-controls completely comaptible with .net core 3? I developed a project. The xaml designer was working at first but sudddenly crashed(1st image) and then Visual Stutio 2019 crashed(2 image). When I reopen the project, xaml designer still crashed, then VS 2019 crashed.

With Framwork 4.7 is everything OK.

Hi there,

I hope you can help me with this, attached a screenshot that shows what I am looking for.

Thanks,

Bahram Afsharipoor

Hi All
I would like to prevent the transition control from showing any transition/animation under certain conditions. For example, the content is bound to an enum field, for certain enum values I dont want it to transition.
I have tried using IValueConverter     

But for this option I cannot set a "No Transition" transition

Second option tried: Setting Duration of the transition on TransitionStatusChanged, but this option only applies to the "Next" transition called not the current

Anyone have any ideas of how to implement this?

Hi everybody.

I'm facing an issue with telerik's RadRibbonView for WPF controls. I set the focus through code by calling ribbonView.Focus(), but afterwards I can not move focus to buttons inside ribbon view. I tried setting IsTabStop on ribbon buttons manually, but it didn't work either. Sample Xaml code is as follows: