Sometimes when I paste a test intro en empty RadMaskedTextInput, the application crushes and the following error occurs:

FATAL Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index

                at System.Text.StringBuilder.Remove(Int32 startIndex, Int32 length)

   at Telerik.Windows.Controls.RadMaskedTextInput.HandlePasteNoMask(Object value, Object& returnString)

   at Telerik.Windows.Controls.RadMaskedTextInput.HandlePasteOverride(Object value, Object& returnString)

   at Telerik.Windows.Controls.RadMaskedInputBase.HandlePaste()

   at Telerik.Windows.Controls.RadMaskedInputBase.OnApplicationPaste(Object sender, ExecutedRoutedEventArgs e)

   at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)

   at System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)

   at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)

   at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)

   at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)

   at System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e)

   at System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)

   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.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)

   at System.Windows.Input.RoutedCommand.ExecuteCore(Object parameter, IInputElement target, Boolean userInitiated)

   at System.Windows.Input.CommandManager.TranslateInput(IInputElement targetElement, InputEventArgs inputEventArgs)

   at System.Windows.UIElement.OnKeyDownThunk(Object sender, KeyEventArgs e)

   at System.Windows.Input.KeyEventArgs.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.HwndKeyboardInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawKeyboardActions actions, Int32 scanCode, Boolean isExtendedKey, Boolean isSystemKey, Int32 virtualKey)

   at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled)

   at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers)

   at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)

   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)

Hi, 

I am using the RadSpreadsheet user control in WPF.

I am using 2 instances of this control in 2 different windows, with the same underlying Workbook such that modifications to the workbook in one control should be propagated to the other one. The idea is that one control offers a small preview of the workbook, while the second one is used in a separate window with extra-ribbon, formula bar... for more confortable editing (i.e enlarged view).

The problem is that changes from one spreadsheet control are not automatically reflected in the other "untouched" spreadsheet control. Changes are only reflected once I play with the display of the "untouched" spreadsheet control, such as changing the zoom level (via the status bar control) or clicking to change the current active sheet back and forth.

I was wondering if there is a function to force refreshing the radspreadsheet control so the display matches the underlying workbook.

I dont need to have the changes being reflected in real time, it would be enough to use such function to refresh the control used for preview once the larger window with the second control is closing.

Thanks

I am trying to apply the same `Margin` style to a lot of `RadWatermarkTextBox` controls by defining the `Margin` as a Style resource:

<Window.Resources>
    <Style TargetType="{x:Type telerik:RadWatermarkTextBox}">
        <Setter Property="Margin">
            <Setter.Value>
                <Thickness Bottom="{x:Static controls:Measurements.UnrelatedDistance}" />
            </Setter.Value>
        </Setter>
    </Style>
</Window.Resources>

Using the Style above makes the control look different compared to explicitly setting the `Margin` property for each control like below:

<telerik:RadWatermarkTextBox Text="Hello world">
    <telerik:RadWatermarkTextBox.Margin>
        <Thickness Bottom="{x:Static controls:Measurements.UnrelatedDistance}" />
    </telerik:RadWatermarkTextBox.Margin>
</telerik:RadWatermarkTextBox>

I am wondering what's the reason for this difference and how to use a Style resource to the make the control look like the way it does when explicitly setting the `Margin` property within the control.

Thank you.

Hello, 

I'm searching how to prevent a RadTileViewItem to automatically resize when switching to a different RadTabItem.

In our WPF application, we use the RadTabControl. The RadTabItems are dinamically created from user input. In a particular RadTabItem, I've include a RadTileView that is populated dinamically from ItemsSource.

The ContentChangeMode is set to Manual and I have a method managing it. It works well.

My problem is that when I maximize one item, its content switch to an editable control. The RadTileView is in a TabItem, so the user could click on an other Tab. When this occurs, all RadTileViewItems are refresh and them states are set to Restored. The RadTileViewItem I previously set to maximized is now Restored but his content is always linke to the "editable control".

My wish is to prevent this. The first solution possible is to block the MaximizedItem to set Restore state. Or second, when switching to Restore, force to set his state to NormalContent. These 2 solutions are OK for me.

Could someone help me or has an example of this?

Sorry if the question had already been posted, I didn't found someting.

And sorry for my poor english ;-)

Best regards

Hello,

I am developing an app for a Windows 10 Tablet that requires a picture to be taken.

I have set up a RadWebCam control, but when I open the settings menu on the tablet it takes 2-3 minutes of "Not Responding" before it loads the settings menu. Additionally it is very slow when adjusting the settings. The only reason I need the settings is for the Zoom control. Is it possible for me to change the zoom programmatically? I would like to add a +/- zoom button, but I cannot find anything on how to do this.

My second issue is that the app needs to run in portrait mode, but the camera is in horizontal mode. Is there any way I can change the rotation of the web cam? If I rotate the control it will rotate the bottom panel as well.

Hi Support team,

even if animation is disabled, the expander is still showing some sort of animation when Windows 11 theme is applied.

This can be reproduced with Telerik samples.

Is there a way to remove that animation entirely so that the content gets displayed immidiateley ?

François

Hey,

I'm looking to have a RadSyntaxEditor's horizontal scroll bar react to a trackpad or mouse wheel input.

Vertical scrolling works just fine, so I can hide the verticalscrollbar but I need to select the horizontal one to move horizontally.

Is there a way to set it for horizontal as well? Did I miss a setting somewhere?

I tried this solution : Horizontal Scrolling w/ Mouse Wheel/Trackpad in UI for WPF | Telerik Forums but it didn't work for me.

I don't know if it's because this solution is in a window and I'm in an usercontrol.

Thanks in advance !

Hi,

I wanted to use "search as you type" functionality (http://docs.telerik.com/devtools/wpf/controls/radgridview/features/search-as-you-type.html) in a TreeListView, but looks like it doesn't work for it even though it's inherited from GridView.

I tried it on a new blank project and confirmed my suspicion:

doesn't show a search panel, but 

works without any issues.

Is this intended behaviour, or can we hope for a fix?

Thank you.

Hello, 

I would like to remove all messages of radchat after inactivity.

I don't find how to remove all messages. Could you help me ?

Thanks

Thomas

Hello,

I followed your solution on this link to apply a string format on the Header of the column in the RadGridView:

https://www.telerik.com/forums/stringformat-not-working-for-gridviewdatacolumn-header

With this solution, if the bound property has a value "test", in the TextBlock.Text inside the header I will show "test 123" ("123" came from the StringFormat).

This solution works but I face a bug when I use it with another functionality. I have implemented a button that on click opens a ListBox on a ContextMenu to show/hide the RadGridViewColumns). See the following link:

https://www.telerik.com/forums/add-button-to-radgridview-column-header

The RadGridView.Columns are bound to the ListBox.

The ListBoxItem.Template has a Checkbox where the IsChecked property is bound to the Column visibility state and the Content property is bound to the Column header. 

If the Listbox is shown (by click on a button, the ListBox is displayed on a ContextMenu), the Header template is dissapeared from the GridViewDataColumn.Header and it is shown on the ListBoxItem. It likes the template is "moved".

If I put the DataTemplate on a resource with x:Shared=False then it still dissapears from the header and it appears twice on the ListBoxItem.

Note:

1. I tried to use the Header without a DataTemplate but I can't use a converter to append the "123" because I already have one converter that can't have other functionality.

2. My current workaround is to do the converter code and the text append on the code behind of the xaml. Then I can bind the xaml.cs String property to the GridViewDataColumn.Header and remove the DataTemplate. The problem with this solution is that I need to do this on each xaml, and cannot be set on a style. In addition, I don't want to use code behind at all.

3. Any workaround without using the DataTemplate will work for me. I can "live" with that problem if you help me solving this specific case because I usually don't use DataTemplates on headers at all.

4. If you can look at your code, I would appreciate if you can think how the DataTemplate is dissapeared. I think that you have a bug somewhere because a Binding should not remove a Template from your control.

The bug is the same as described in this post (screenshot attached)

https://www.telerik.com/forums/gridview-columns-headers-disappearing-after-binding-to-controlpanel

I need a workaround to display the complete text without DataTemplate, because the solution here of adding DataTemplate for all columns of the application is not aceptable. Maybe there is a way to trigger the Context on the ListBoxItem and changed the binding according to the content type?

Thank you,

Alex.