Right now, it is not easy to disable styles for standard controls like Button.
Especially when using NoXaml.
You have to create an Empty style on Application level for the control to "rewind" its style.
I do believe this kind of style drags down performance of controls when unloading, since it causes StyleChanged events.
Some explanation about performance (how things work to my understanding). Might be BS, but I spend a few hours debugging through .net code to get this idea:
Issue is, that when control is unloaded, its not part of the logical / visual tree of the application anymore, so it falls back to styles defined on assembly level.
e.g. Themes/Generic.xaml. So the empty styles defined on Application level do not count anymore, but the ones you defined in your theme.
This can be observed on RadTabbedWindow. When unloading pages (like switching between them), controls fall back to the styles defined in the theme from Telerik.Windows.Controls.Navigation, because they are still children of that page.
You can observe this behaviour if you set a Breakpoint in FrameworkElement.OnStyleChanged before unloading a control tree.
If you'd remove the System.Windows.xaml from your theme-dictionaries so that one can decide to merge those styles or not, that would be great.
Hello i have noticed few weird/wrong behaviors of containers.
Based on your MVVM demo application:
Select node : A4 in Audi group
Select node Volkswagen Group.
Move Volkswagen group by 1px
In such case you removed A4 node from its container, which was dropped correctly.
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.
I'm in need for a VisibleColumnCount dependency property for RadGridView (or GridViewDataControl I guess).
Just like FrozenColumnCount actually, so I guess this is just a simple dev but I can be wrong?
It would be so helpful, because I have a textbox ("search column with name") that I use to toggle the visibility of the columns in my RadGridView, and I want to do stuff whether there are matching columns (like, displaying a text "No results").
Currently, I'm using a bunch of converters to do the job an it leads to quite ugly and hard-to-maintain code.
Thanks in advance!
Currently RadComboBox has no property to prevent user from clearing it with backspace. Also ComboBox SelectedIndex may become -1 when ItemSource is changed.
New propery (CanClear) could be checked on KeyDown event, when item collection is changed or when SelectedItem is changed..
If CanClear is set to false:
Backspace is ignored on KeyDown.
If collection is changed and collection size is greater than 0, ComboBox SelectedIndex becomes 0 automatically.
If SelectedItem becomes null and item collection size is greater than 0, ComboBox attemts to select first non-null item from collection.
I really liked this feature and noticed you implemented it for WinForms already: TextBox Improvements in Telerik UI for WinForms
Would be great to have it for WPF as well!
Add a control that allows you to define a number of steps. Each step should be displayed with some kind of visual (like an ellipse for example) and each visual should be connected with a line. The line could be animated to look like a progress bar.
This kind of visualization is found in the Multi-Step Form feature of Kendo UI for Angular.
In the meantime, you can achieve this effect by implementing a custom control as shown in the First Look demo of RadButtons.
Create a SlideView control like the one in the Telerik UWP suite.
The control should have a content area, previous and next buttons, and dots indicator below, that indicates the currently selected page.
Currently the palette of a theme can only be set for the entire application. Setting the palette per control instance should also be possible.