Completed
Last Updated: 22 Jan 2020 12:34 by ADMIN
Release LIB 2020.1.127 (01/27/2020)
'Cannot find resource named 'DragVisualStyle' error occurs in in the error list when using implicit styles.
Completed
Last Updated: 22 Jan 2020 08:04 by ADMIN
Release LIB 2020.1.127 (01/27/2020)
Whitespaces are ignored when copy-pasting from PdfViewer to another text redactor.
Approved
Last Updated: 21 Jan 2020 15:23 by ADMIN
ADMIN
Created by: Tanya
Comments: 5
Category: Spreadsheet
Type: Feature Request
9
Provide the ability to work with images in headers/footers of a worksheet. Note that large images put in headers are visualized as watermarks on printing/exporting to PDF.
Completed
Last Updated: 21 Jan 2020 13:34 by ADMIN
Release LIB 2020.1.127 (01/27/2020)

As suggested in the orginal support ticket 1430154 I'm opening a separate bug reprot for the RadRichTextBox.

Visual Studio 2019 solution to reproduce the problem is attached to the bug report.

Approved
Last Updated: 21 Jan 2020 13:17 by ADMIN
Currently the LocalDataSourceProvider has such support and we can consider introducing the same functionality in the QueryableDataProvider.
Pending Review
Last Updated: 20 Jan 2020 15:29 by ADMIN

using GroupStyle ,and setting : ScrollViewer.CanContentScroll="False",when click the item,
within the group,the ScrollViewer auto scroll up and down,don't using VirtualizingPanel.
but the microsoft ListBox is OK!

 the code like the follwoing:
    <telerik:RadListBox Width="250" ItemsSource="{Binding Data.View}" SelectionMode="Single"
                            ItemTemplate="{StaticResource ListBoxTemplate}"
                            ScrollViewer.CanContentScroll="False">
                    <telerik:RadListBox.GroupStyle>
                    <GroupStyle>
                        <GroupStyle.ContainerStyle>
                            <Style TargetType="{x:Type GroupItem}">
                                <Setter Property="Template">
                                    <Setter.Value>
                                        <ControlTemplate TargetType="{x:Type GroupItem}">
                                            <Expander IsExpanded="True"
                                           ExpandDirection="Down">
                                                <Expander.Header>
                                                    <StackPanel Orientation="Horizontal">
                                                        <TextBlock Text="{Binding Path=Name}"
                                                        VerticalAlignment="Center" />
                                                        <TextBlock Text="{Binding Path=ItemCount, StringFormat=Count:{0}}"
                                                        VerticalAlignment="Center"
                                                        Margin="5,0,0,0" />
                                                    </StackPanel>
                                                </Expander.Header>
                                                <ItemsPresenter />
                                            </Expander>
                                        </ControlTemplate>
                                    </Setter.Value>
                                </Setter>
                            </Style>
                        </GroupStyle.ContainerStyle>
                    </GroupStyle>
                </telerik:RadListBox.GroupStyle>
            </telerik:RadListBox>

Completed
Last Updated: 20 Jan 2020 14:47 by ADMIN
Release LIB 2020.1.127 (01/27/2020)
The exception is thrown in RadDocument.IsInNonEditableRange() method, which is called before measuring the document. When using a format provider, the error is thrown but the document can still be opened in RichTextBox. In binding scenario, the document is not imported.

Workaround: Ensure the document is measured before assigning it to RadRichTextBox.
Completed
Last Updated: 20 Jan 2020 12:54 by ADMIN
Release LIB 2020.1.120
Enable RadBitmap creation with different than the 96 DPI.
Completed
Last Updated: 20 Jan 2020 12:40 by ADMIN
Release LIB 2020.1.120
ADMIN
Created by: Todor
Comments: 1
Category: ImageEditor
Type: Bug Report
2
If an image with dpi different than 96 (for example 300dpi) is imported and then some operations are made on it, the exported image is with 96dpi.
Completed
Last Updated: 20 Jan 2020 12:40 by ADMIN
Release LIB 2020.1.120
Hi,

    I found a bug when use MergeCells in grid view and tree list view, I am the license account, my support is out of date,But I still want to feadback the bug to you , I make a vedio in attachment

When use in radtreelistview , I can not explict set the MergedCellsStyle, maybe MergedCellsStyleSelector also have the bug.I just try MergedCellsStyle.

Completed
Last Updated: 20 Jan 2020 11:31 by ADMIN
Release R1 2020
In order to reproduce,  you need to focus the control when you run the application.

1.When you press the backspace key it removes the last character and after pressing it a second time the character will be replaced with the removed character.

2. When paste(Ctrl+V) a text in the control, the text is ignoring the current position of the caret and position at the beginning of the control.
Approved
Last Updated: 20 Jan 2020 09:39 by ADMIN
Tab selection does not work in the VS designer when switching between different views.
Completed
Last Updated: 20 Jan 2020 08:03 by ADMIN
Release LIB 2020.1.120 (01/20/2020)

Steps to reproduce:

1. Create a form with a webcam that calls Close and Dispose when closed.

2. Create a second form with a button that shows the first form.

3. Run the project and you will see an exception when closing the webcam form.

Completed
Last Updated: 20 Jan 2020 07:21 by ADMIN
Release LIB 2020.1.120 (1/20/2020)

Hello,

 

I've found a new bug regarding per-monitor DPI awareness in the latest WPF controls build (2020.1.115).

Applications start fine on the modern Windows 10 systems (1607 or later) but crash on previous Windows versions.

The conditions to reproduce:

  • The application is launched on Windows version older than Windows 10 1607/Windows Server 2016. I've reproduced it on Windows 8.1/Windows Server 2012 R2, but I suppose it also affects Windows 10 1507/1511, and probably Windows 8/Windows Server 2012.
  • Application manifest contains:
<dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true/PM</dpiAware>

Here is the stack trace:

System.EntryPointNotFoundException: Unable to find an entry point named 'GetDpiForSystem' in DLL 'User32.dll'.

   at Telerik.Windows.Controls.InternalWindow.Standard.NativeMethods.GetDpiForSystem()

   at Telerik.Windows.Controls.InternalWindow.Standard.DpiHelper.GetSystemScaleFactor()

   at Telerik.Windows.Controls.InternalWindow.Standard.DpiHelper.CalculateScaleFactor(IntPtr hwnd)

   at Telerik.Windows.Controls.InternalWindow.Standard.DpiHelper.GetPerMonitorDPIAwareScaleFactor(IntPtr hwnd)

   at Telerik.Windows.Controls.InternalWindow.ChromelessWindowHelper.<Initialize>b__81_0(Object sender, EventArgs args)

   at System.Windows.Window.OnSourceInitialized(EventArgs e)

   at System.Windows.Window.CreateSourceWindow(Boolean duringShow)

   at System.Windows.Window.CreateSourceWindowDuringShow()

   at System.Windows.Window.SafeCreateWindowDuringShow()

   at System.Windows.Window.ShowHelper(Object booleanBox)

   at System.Windows.Window.Show()

   at Telerik.Windows.Controls.InternalWindow.WindowWithNoChromeWindowHost.Open(Boolean isModal)

   at Telerik.Windows.Controls.WindowBase.ShowWindow(Boolean isModal)

   at Telerik.Windows.Controls.RadWindow.Show()

   at TelerikWpfCrash.App.OnStartup(StartupEventArgs e) in C:\Users\fedarovich\source\repos\Test\TelerikWpfCrash\TelerikWpfCrash\App.xaml.cs:line 20


The issue happens because the code calls the WinAPI functions not available on these OS versions (for example, GetDpiForSystem, but maybe there are more). 

I've attached a small example to reproduce this issue. It is for .Net Core 3.1, but the same issue exists in .Net Framework too.

Approved
Last Updated: 20 Jan 2020 05:47 by ADMIN

To reproduce: 

- Select some cells within the same column using Ctrl+Click

- Use the context menu to copy the cells

This works in Excel when the cells are within the same column. 

Declined
Last Updated: 17 Jan 2020 15:43 by ADMIN
Created by: EK
Comments: 2
Category: UI for WPF
Type: Feature Request
1

Hi there

This is a very impotent control in our company.
However, we need to implement a spell checker as you already have in RTF.

 

Eliezer Kaplansy PhD
CTO
Makeshet Information Systems

Approved
Last Updated: 17 Jan 2020 15:27 by ADMIN

We noticed that RadGridView does not get garbagecollected sometimes.
So i fired up  a memory analyzer to see what is going on.

This is the graph that shows that the RadGridView is causing a leak. The only references that keep the GridView from getting collected are those two WeakEventListeners

To further investigate i decompiled GridViewDataControl and could identify the culprit.

private void SubscribeToDispatcherShutdown()
    {
      if (this.dispatcherShutdownListener != null)
        this.dispatcherShutdownListener.Detach();
      this.dispatcherShutdownListener = new WeakEventListener<GridViewDataControl, object, EventArgs>(this);
      this.dispatcherShutdownListener.OnEventAction = (Action<GridViewDataControl, object, EventArgs>) ((grid, source, eventArgs) => grid.OnDispatcherShutdownFinished(source, eventArgs));
      this.dispatcherShutdownListener.OnDetachAction = (Action<WeakEventListener<GridViewDataControl, object, EventArgs>>) (weakEventListener => this.Dispatcher.ShutdownFinished -= new EventHandler(this.dispatcherShutdownListener.OnEvent));
      this.Dispatcher.ShutdownFinished += new EventHandler(this.dispatcherShutdownListener.OnEvent);
    }

In the second line from the botton

... weakEventListener => this.Dispatcher.ShutdownFinished -
... you are using 'this.Dispatcher...' which causes the leak since the Action will implicitly capture the 'this' reference.
Which kind of defeats the prupose of having a WeakReference inside your WeakEventListener.

Sadly i cannot figure out how it happens, but i think its only when Detach (FrameworkElement.Unloaded ultimately) is not called.
While this is the actual issue, i thought I'd share this with you so you.

Declined
Last Updated: 17 Jan 2020 15:26 by ADMIN

Hi,

   There is a bug in version 2019.3.1023.45 RadWindow when I minimum and restore window from task bar

Declined
Last Updated: 17 Jan 2020 15:25 by ADMIN

when use the RadTransitionControl's SlideAndZoomTransition effect for the RadTabControl, the radComboBox Multiple Selection will lost in the  tabItem。

the  radComboBox data is from the mvvm binding,after change the tabitem,the Multiple Selection become single selection.

the RadTabControl's style is following:

           ...

           <ControlTemplate x:Key="TabControlTemplate" TargetType="telerik:RadTabControl">
        <Grid>
            <telerik:RadDockPanel LastChildFill="True">
                <telerik:LayoutTransformControl x:Name="HeaderDockedElement" telerik:RadDockPanel.Dock="Top">
                    <Grid SnapsToDevicePixels="True">
                        <Border x:Name="HeaderBackground" Background="{TemplateBinding HeaderBackground}" Visibility="{TemplateBinding BackgroundVisibility}"/>
                        <telerik:RadDockPanel Panel.ZIndex="10">
                            <telerik:LayoutTransformControl x:Name="AdditionalContentTransform" Margin="0" telerik1:RadDockPanel.Dock="Right">
                                <ContentPresenter x:Name="AdditionalContentElement" Content="{TemplateBinding AdditionalContent}"/>
                            </telerik:LayoutTransformControl>
                            <ToggleButton x:Name="DropDownButtonElement"
                                    Visibility="Collapsed"
                                    telerik:RadDockPanel.Dock="Right"
                                    Style="{TemplateBinding DropDownButtonStyle}"
                                    ClickMode="Press"
                                    IsChecked="{Binding IsDropDownOpen, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}">
                                <telerik:RadContextMenu.ContextMenu>
                                    <telerikTabControl:DropDownMenu x:Name="DropDownMenuElement"
                                            StaysOpen="False"
                                            Placement="Bottom"
                                            Style="{TemplateBinding DropDownStyle}"
                                            ItemTemplate="{TemplateBinding ItemDropDownContentTemplate}"
                                            ItemTemplateSelector="{TemplateBinding ItemDropDownContentTemplateSelector}"
                                            DisplayMemberPath="{TemplateBinding DropDownDisplayMemberPath}"/>
                                </telerik:RadContextMenu.ContextMenu>
                            </ToggleButton>
                            <RepeatButton x:Name="LeftScrollButtonElement" Style="{StaticResource ScrollButtonStyle}">
                                <telerik:RadGlyph Glyph="{StaticResource GlyphArrowChevronLeft}"/>
                            </RepeatButton>
                            <RepeatButton x:Name="RightScrollButtonElement" Style="{StaticResource ScrollButtonStyle}" telerik:RadDockPanel.Dock="Right">
                                <telerik:RadGlyph Glyph="{StaticResource GlyphArrowChevronRight}"/>
                            </RepeatButton>
                            <ScrollViewer x:Name="ScrollViewerElement"
                                    Style="{StaticResource EmptyScrollViewerStyle}"
                                    VerticalScrollBarVisibility="Disabled"
                                    BorderThickness="0"
                                    IsTabStop="False"
                                    HorizontalScrollBarVisibility="{Binding (ScrollViewer.HorizontalScrollBarVisibility), RelativeSource={RelativeSource TemplatedParent}}">
                                <ItemsPresenter/>
                            </ScrollViewer>
                        </telerik:RadDockPanel>
                    </Grid>
                </telerik:LayoutTransformControl>
                <Border x:Name="ContentBorder"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Mode=TwoWay}"
                        Background="{TemplateBinding Background}"
                        Padding="{TemplateBinding Padding}">
                    <Grid>
                       
                        <telerik:RadTransitionControl x:Name="ContentElement"
                                            Visibility="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=IsContentPreserved,Converter={StaticResource InvertedBooleanToVisibilityConverter}}"
                                            Content="{TemplateBinding SelectedContent}"
                                            ContentTemplate="{TemplateBinding SelectedContentTemplate}"
                                            ContentTemplateSelector="{TemplateBinding SelectedContentTemplateSelector}"
                                            Duration="00:00:00.350">
                            <telerik:RadTransitionControl.Transition>
                                <local:TransitionSetFP>
                                    <local:TransitionSetFP.BackTransition>
                                        <telerik:SlideAndZoomTransition SlideDirection="LeftToRight" MinZoom="1" StartSlideAt="0.01" MinAlpha="1"/>
                                    </local:TransitionSetFP.BackTransition>
                                    <local:TransitionSetFP.ForwardTransition>
                                        <telerik:SlideAndZoomTransition SlideDirection="RightToLeft" MinZoom="1" StartSlideAt="0.01" MinAlpha="1"/>
                                    </local:TransitionSetFP.ForwardTransition>
                                </local:TransitionSetFP>
                            </telerik:RadTransitionControl.Transition>
                        </telerik:RadTransitionControl>
                        <Grid x:Name="ContentElementsPanel" Visibility="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=IsContentPreserved, Converter={StaticResource BooleanToVisibilityConverter}}"/>
                    </Grid>
                </Border>
            </telerik:RadDockPanel>
        </Grid>
        <ControlTemplate.Triggers>
            <Trigger Property="DropDownDisplayMode" Value="Visible">
                <Setter Property="Visibility" Value="Visible" TargetName="DropDownButtonElement"/>
            </Trigger>
            <MultiTrigger>
                <MultiTrigger.Conditions>
                    <Condition Property="DropDownDisplayMode" Value="WhenNeeded"/>
                    <Condition SourceName="ScrollViewerElement" Property="ComputedHorizontalScrollBarVisibility" Value="Visible"/>
                </MultiTrigger.Conditions>
                <Setter Property="Visibility" Value="Visible" TargetName="DropDownButtonElement"/>
            </MultiTrigger>
            <Trigger Property="TabStripPlacement" Value="Top">
                <Setter Property="BorderThickness" TargetName="ContentBorder" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Converter={StaticResource ThicknessToOrientedThicknessConverter}, ConverterParameter=LeftBottomRight}"/>
            </Trigger>
            <Trigger Property="TabStripPlacement" Value="Left">
                <Setter TargetName="DropDownMenuElement" Property="HorizontalOffset" Value="0"/>
                <Setter TargetName="DropDownMenuElement" Property="VerticalOffset" Value="-3"/>
                <Setter Property="telerik:RadDockPanel.Dock" Value="Left" TargetName="HeaderDockedElement"/>
                <Setter Property="telerik:RadDockPanel.Dock" Value="Left" TargetName="AdditionalContentTransform"/>
                <Setter Property="telerik:RadDockPanel.Dock" Value="Left" TargetName="DropDownButtonElement"/>
                <Setter Property="LayoutTransform" TargetName="HeaderDockedElement">
                    <Setter.Value>
                        <RotateTransform Angle="-90"/>
                    </Setter.Value>
                </Setter>
                <Setter Property="BorderThickness" TargetName="ContentBorder" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Converter={StaticResource ThicknessToOrientedThicknessConverter}, ConverterParameter=TopRightBottom}"/>
            </Trigger>
            <Trigger Property="TabStripPlacement" Value="Right">
                <Setter TargetName="DropDownMenuElement" Property="HorizontalOffset" Value="0"/>
                <Setter TargetName="DropDownMenuElement" Property="VerticalOffset" Value="3"/>
                <Setter Property="LayoutTransform" TargetName="HeaderDockedElement">
                    <Setter.Value>
                        <RotateTransform Angle="90"/>
                    </Setter.Value>
                </Setter>
                <Setter Property="BorderThickness" TargetName="ContentBorder" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Converter={StaticResource ThicknessToOrientedThicknessConverter}, ConverterParameter=TopLeftBottom}"/>
            </Trigger>
            <Trigger Property="TabStripPlacement" Value="Bottom">
                <Setter TargetName="DropDownMenuElement" Property="HorizontalOffset" Value="3"/>
                <Setter Property="telerik:RadDockPanel.Dock" Value="Left" TargetName="AdditionalContentTransform"/>
                <Setter Property="telerik:RadDockPanel.Dock" Value="Left" TargetName="DropDownButtonElement"/>
                <Setter Property="LayoutTransform" TargetName="HeaderDockedElement">
                    <Setter.Value>
                        <RotateTransform Angle="180"/>
                    </Setter.Value>
                </Setter>
                <Setter Property="LayoutTransform" TargetName="AdditionalContentTransform">
                    <Setter.Value>
                        <RotateTransform Angle="180"/>
                    </Setter.Value>
                </Setter>
                <Setter Property="BorderThickness" TargetName="ContentBorder" Value="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=BorderThickness, Converter={StaticResource ThicknessToOrientedThicknessConverter}, ConverterParameter=TopRightLeft}"/>
            </Trigger>
        </ControlTemplate.Triggers>
    </ControlTemplate>
    <Style TargetType="telerik:RadTabControl">
        <Setter Property="mat:MaterialAssist.ShadowDepth" Value="Depth1"/>
        <Setter Property="TextOptions.TextRenderingMode" Value="ClearType"/>
        <Setter Property="BorderBrush" Value="{telerik1:FluentResource ResourceKey=BasicBrush}"/>
        <Setter Property="HeaderBackground" Value="{telerik1:FluentResource ResourceKey=MainBrush}"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Background" Value="{telerik1:FluentResource ResourceKey=PrimaryBackgroundBrush}"/>
        <Setter Property="MinWidth" Value="5"/>
        <Setter Property="MinHeight" Value="20"/>
        <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
        <Setter Property="VerticalContentAlignment" Value="Stretch"/>
        <Setter Property="IsTabStop" Value="False"/>
        <Setter Property="FontFamily" Value="{telerik1:FluentResource ResourceKey=FontFamily}"/>
        <Setter Property="FontSize" Value="{telerik1:FluentResource ResourceKey=FontSize}"/>
        <Setter Property="Foreground" Value="{telerik1:FluentResource ResourceKey=MarkerBrush}"/>
        <Setter Property="ItemsPanel">
            <Setter.Value>
                <ItemsPanelTemplate>
                    <Primitives:TabWrapPanel/>
                </ItemsPanelTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="DropDownButtonStyle" Value="{StaticResource DropDownButtonStyle}"/>
        <Setter Property="DropDownStyle" Value="{StaticResource DropDownMenuStyle}"/>
        <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
        <Setter Property="Template" Value="{StaticResource TabControlTemplate}"/>
    </Style>
 

 

Declined
Last Updated: 17 Jan 2020 15:24 by ADMIN

After installing the WPF software I was not able to open any project in VS 2017 without it hanging.

 

In the end I removed the VS integration and was able to resume development.

 

It was the only Telerik component I had installed. I can't find the version number but it was the latest of the website as of 17th Oct 2019.

 

Can you explain why this happened?