Hello.

I want add ToolTip on GridViewHeaderCell, column created in code as

column = new GridViewDataColumn
                {
                    ColumnGroupName = args.ColumnDef.ColumnGroupName,                
                    DataMemberBinding = new Binding(args.ColumnDef.Member)
                    {
                        Mode = BindingMode.TwoWay,
                        UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged,
                    },
                    IsReadOnlyBinding = new Binding(args.ColumnDef.IsReadOnlyMember)
                    {
                        Converter = new NullToBooleanConverter {IsInverted = true}
                    },
                    Header = args.ColumnDef.Header,
                    HeaderCellStyle = TryFindResource("DataHeaderCellStyle") != null ? (Style)Resources["DataHeaderCellStyle"] : new Style(typeof(GridViewHeaderCell)),

                    IsVisible = true,
                    IsFilterable = false,
                };

                if (args.ColumnDef.ToolTip != null)
                    column.ToolTip = new ToolTip { Content = args.ColumnDef.ToolTip };

in xaml i added style

<Style x:Key="DataHeaderCellStyle" BasedOn="{StaticResource GridViewHeaderCellStyle}" TargetType="telerik:GridViewHeaderCell">
            <!--<Setter Property="ToolTipService.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Content.Column.ToolTipText, Mode=OneWay}" />-->
            <Setter Property="ToolTip" Value="{Binding Content, RelativeSource={RelativeSource Self}}"/>
                <Setter Property="HorizontalContentAlignment" Value="Center"/>
                <Setter Property="TextWrapping" Value="Wrap"/>
                <Setter Property="FontSize" Value="12"/>
</Style>

If use <Setter Property="ToolTipService.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Content.Column.ToolTipText, Mode=OneWay}" /> or <Setter Property="ToolTipService.ToolTip" Value="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=Content.ToolTipText, Mode=OneWay}" /> this is don't work, no tooltip.

If use <Setter Property="ToolTip" Value="{Binding Content, RelativeSource={RelativeSource Self}}"/> (seen here https://www.telerik.com/forums/tooltip-on-column-title) content of GridViewHeaderCell will be lost (on attachement).

How need set tooltip in style property?

If add event subscribe (as here https://www.telerik.com/forums/radgridview---tooltip-for-dynamically-created-column), will work...

ctor

{

    InitializeComponent();
    EventManager.RegisterClassHandler(typeof(GridViewHeaderCell), GridViewHeaderCell.MouseEnterEvent, new RoutedEventHandler(OnMouseEnterEvent));
}

        private void OnMouseEnterEvent(object sender, RoutedEventArgs e)
        {
            if (sender is GridViewHeaderCell cell && cell.Column.ToolTip != null)
            {
                cell.ToolTip = cell.Column.ToolTip;
            }
        }

The performance of the property grid isn't great, and it appears that the performance degrades on some scenarios.

We are placing the property grid inside a RadDocking. The pane itself has the IsHidden bound to a property, since the software is an IDE and depending on the type of the active document, we either show a toolbox and  / or a property grid.

I can see with dotTrace that something is leaking (The weakevent listener is raising the handler more time than it should).

Code:

MainWindow.xaml:

MainWindow,cs

MyObject:

PropertiesControl.xaml:

If you click the first button and then the second button over and over again, then you would notice that the property grid becomes slower and slower, and that the Telerik.Windows.Data.WeakEvent+WeakListener`1.Handler() is being called more than once, event though OnCollectionChanged was called only once.

On Telerik 2016.Q2 the problem was even worse. The OnCollectionChanged would be called as the number of properties the object has.

Hi,

I am storing the user changes in the PDF viewer for multiple PDFs.

For zoom, there is the ScaleFactorChanged event.

It seems there is no event exposed for Rotation, like RotationChanged?

How is it possible to store the information when the user changes the rotation?

As a workaround, I now check the rotation with :

 DetailPdfViewer.CommandDescriptors.RotateClockwiseCommandDescriptor.Command.CanExecuteChanged += OnRotationChanged;

and then get DetailPdfViewer.RotationAngle, but this seems really hacky to me. It just triggers to often, so I do not like having this in production too long.

Best regards,

Kevin

Hello,

I am having an issue with reordering multiple selected items in a RadListBox. I am trying to select multiple items in a RadListBox, and drag them within the same RadListBox to reorder them. However, it doesn't always work. When I start to drag, sometimes I will be able to reorder the items (cursor indicator and drop visual indicator in the RadListBox show normally), and sometimes it won't. The drag visual always works normally, but it looks like AllowDrop is immediately false sometimes (not sure if that is what is actually happening, but it's the best way I can describe it). I have a test RadListBox for theme visual feedback and testing, and the behavior is happening there. Here is the code I am using:

And here is the code for ReorderableListItemStyle:

Is there something I am missing? I am using Telerik WPF R3 2020.

I'm trying to pass  a Telerik CrystalPalette to a Sub but I get an error "...is class type and can not be used as an expression".  Hints?

NotifyIcon does not showing for Core project with TargetFramework net452 or higher

TestNotifyIcon.csproj

<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net452</TargetFramework>
    <UseWPF>true</UseWPF>
    <ApplicationIcon>Dashboard.ico</ApplicationIcon>
  </PropertyGroup>
  <ItemGroup>
    <None Remove="Dashboard.ico" />
  </ItemGroup>
  <ItemGroup>
    <Reference Include="Telerik.Windows.Controls">
      <HintPath>..\Telerik.Windows.Controls.dll</HintPath>
    </Reference>
    <Reference Include="Telerik.Windows.Controls.Navigation">
      <HintPath>..\Telerik.Windows.Controls.Navigation.dll</HintPath>
    </Reference>
  </ItemGroup>
  <ItemGroup>
    <Resource Include="Dashboard.ico" />
  </ItemGroup>
</Project>

MainWindow.xaml

<Window x:Class="TestNotifyIcon.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
  Title="MainWindow" Height="450" Width="800"
  x:Name="_this">
 <Grid>
  <TextBlock x:Name="MessageTextBlock"
       TextAlignment="Center"
       VerticalAlignment="Center"
       Text="Test"/>
  <telerik:RadNotifyIcon x:Name="NotifyIcon"
          ShowTrayIcon="True"
          TooltipContent="{Binding Title, ElementName=_this, Mode=OneWay}"
          TrayIconSource="/TestNotifyIcon;component/Dashboard.ico"
          PopupActivationMouseEvent="All"
          PopupContent="{Binding Text, ElementName=MessageTextBlock, Mode=OneWay}">
  </telerik:RadNotifyIcon>
 </Grid>
</Window>

Hello All,

      After hours of digging through the forums and help pages and examples, I have NOT found a complete example of how to bind a RadRichTextBox to a viewmodel property.  I would like to see a complete example , all the XAML and all the code in the viewmodel to setup the binding.  I think it should be fairly easy , all I want to do is display some simple text from my database (it's a property in the viewmodel) in a RadRichTextBox...  I'm sure I'll have to use a TxtFormatProvider for the control, but I can't seem to find a complete example of how to do this to bind to a viewmodel property.  The viewmodel property gets set on the viewmodels object instantiation .  I have looked at the Developer Focused Examples and found the data binding example , but that's not a View-View Model example.  

Thanks in advance,

Kevin Orcutt
Senior Software Engineer

Wurth Electronics ICS, Inc.
7496 Webster St., Dayton, OH 45414
Tel: 937.415.7700
Toll Free: 877.690.2207
Fax: 937.415.7710
Email: kevin.orcutt@we-ics.com
http://www.we-ics.com
 

Since you folks don't provide any Telerik Label or TextBox controls, we have to use the Microsoft default controls which I then find out will NOT be themed via StyleManager per this link.  

If using the XML approach, how are we supposed to use themes without key support for two of the most fundamental and basic controls like Label and TextBox?

It makes the entire purpose of "Application level" themes useless without this basic support.

Am I missing something?

Rob.