Questions on UI for WPF Forum

1 answer

98 views

ValidationErrorTemplate: ToolTip display mode on MultiColumnComboBox ?

Hi,

I'm using a RadMultiColumnComboBox and can't seem to be able to set the validation error template to Tooltip using:

telerik:ValidationErrorTemplateHelper.DisplayMode="ToolTip"

It always set the validation message on the right of the control, and in my case it's being clipped by the windows limits.

This usually works great on all other controls.

Thank you for your help

MultiColumnComboBox

answered on 03 Jun 2024

0 answers

45 views

Null pane with custom RemovePane method

I'm getting a null reference exception when closing one of the pane and could not figure out why it is null in the RemovePane(RadPane pane) method.

We have override to that method,

protected override void RemovePane(RadPane pane)
        {
            if(pane.Header.ToString().ToLower()=="digital" || pane.Header.ToString().ToLower() == "analog")
                SaveDebugPaneLayout(pane);
            pane.DataContext = null;
            pane.Content = null;
            pane.ClearValue(RadDocking.SerializationTagProperty);
            pane.RemoveFromParent();
        }

And also the CreatePaneForItem method,

protected override RadPane CreatePaneForItem(object item)
        {
            var viewModel = item as DebugPaneViewModel;
            if (viewModel != null)
            {
                var pane = viewModel.IsDocument ? new RadDocumentPane() : new RadPane();

                pane.DataContext = item;
    
                if (viewModel.ContentType != null)
                {
                    if (viewModel.GetType().ToString().EndsWith("EditorViewModel")) 
                    {
                        if (pane.Content == null)
                        {
                            dynamic obj = Activator.CreateInstance(viewModel.ContentType);
                            pane.Content = obj;
                            obj.DataContext = viewModel;
                        }
                    }
                    else
                    {
                        pane.Content = Activator.CreateInstance(viewModel.ContentType);
                    }
                }

                RadDocking.SetSerializationTag(pane, viewModel.ID);
                return pane;
            }

            return base.CreatePaneForItem(item);
        }

How can I know which pane is null when it is executing the RemovePane(). I tried looking at when panes are being added but did not see anything suspicious.

Docking

asked on 31 May 2024

1 answer

65 views

How to display the drop down with all records on arrow key down in RadAutoCompleteBox

Dear All,

I am using the RadAutoCompleteBox as follows. I would like to display all Products when pressing the "Keyboard Down Arrow" on the RadAutoCompleteBox. Is this possible?

<telerik:RadAutoCompleteBox Height="23" Width="180" Background="#FFEDF4AB" Margin="3,0,0,0" 
							ItemsSource="{Binding Products}" 
							SelectedItem="{Binding SelectedProductItem, Mode=TwoWay}"                                                
							SelectionMode="Single" 
							TextSearchMode="StartsWith"
							SearchText="{Binding Name, Mode=TwoWay}"
							TextSearchPath="Name"
							DisplayMemberPath="Name"
							AutoCompleteMode="Suggest" >
	<telerik:RadAutoCompleteBox.DropDownItemTemplate>
		<DataTemplate>
			<StackPanel Orientation="Horizontal">
				<TextBlock Text="{Binding Name}" FontWeight="Bold" Foreground="Black" Width="200" />
			</StackPanel>
		</DataTemplate>
	</telerik:RadAutoCompleteBox.DropDownItemTemplate>
	<Behaviors:Interaction.Triggers>
		<Behaviors:EventTrigger EventName="SelectionChanged">
			<Behaviors:InvokeCommandAction Command="{Binding SelectProductCommand}" />
		</Behaviors:EventTrigger>
	</Behaviors:Interaction.Triggers>
</telerik:RadAutoCompleteBox>

AutoCompleteBox

answered on 31 May 2024

0 answers

52 views

Style or Template for RadToolBarOverflowPanel

Hello,

is there a way to style the RadToolBarOverflowPanel? Or add a template for its items?

I would like to display the button on the left side and show the tooltip next to it.

Any help would be appreciated.

Best regards :)

Styling

ToolBar

asked on 30 May 2024

1 answer

47 views

Correctly style PaneHeaders in different RadPaneGroups

Hi, I have an issue trying to style RadDocking control.

I want that my PaneHeaders change their background when user selects them. I tried to modify RadPaneGroup ControlTemplate and RadPane Control Template, but with no luck. Could you please provide me detail sample for that?

One more question - how to correctly control height of the RadGroupHeader (Part where PaneHeaders *(tabs) are suited)? I simply dont understand which part of template should be responcible for that.

P.S. I am using Office 2019 theme.

Docking

answered on 30 May 2024

0 answers

52 views

AStarRouter

Can you please give a small example of "AStart Router" used in routing with tree layout.

Diagram

asked on 28 May 2024

0 answers

81 views

GridViewDataColumn ; SearchBox error in Distinct values

I have customized filtering control along with behavior,

Im trying to use SearchBox control in distinct values filter ive tried "EnableDistinctValuesFiltering="True""
even though i have search box it doest work,

example: in this screenshot ive type pending but the list still remains the same

here is my style

GridView

updated question on 27 May 2024

2 answers

85 views

RadDesktopAlert MVVM - Handle Button Click

I am attempting to use the desktop alert but instead of reacting to a click on the content I want a button. How do I route this?

View Model Method; show the alert (works)

        private void ShowAlert()
        {
            if (IsShowAlert &&
                AlertTitle.IsNotNullOrEmpty() &&
                AlertText.IsNotNullOrEmpty())
            {
                // Create a new BitmapImage
                BitmapImage bitmap = new BitmapImage();
                bitmap.BeginInit();
                bitmap.UriSource = new Uri("pack://application:,,,/Images/GSI_Cloud_256.ico");
                bitmap.EndInit();

                var image = new System.Windows.Controls.Image() { Source = bitmap };

                desktopAlertManager.ShowAlert(new DesktopAlertParameters
                {
                    Header = AlertTitle,
                    Content = AlertText,
                    Icon = image,
                    IconColumnWidth = 48,
                    IconMargin = new Thickness(10, 0, 20, 0),
                    ShowDuration = AlertShowDuration,
                    Command = new DelegateCommand(OnAlertCommandExecuted)
                });
            }
        }

Respond to the Button Press:

        private void OnAlertCommandExecuted(object param)
        {
            IsShowTrayApp = true;
        }

Alert Style with a Button:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:telerikNavigation="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation">

    <SolidColorBrush x:Key="DesktopAlert_BorderBrush" Color="#FF848484"/>
    <LinearGradientBrush x:Key="DesktopAlert_Background" EndPoint="0.5,1" StartPoint="0.5,0">
        <GradientStop Color="Cornsilk" Offset="0"/>
        <GradientStop Color="#FFD4D4D4" Offset="1"/>
    </LinearGradientBrush>
    <SolidColorBrush x:Key="DesktopAlert_InnerBorderBrush" Color="#FFFFFFFF"/>
    <CornerRadius x:Key="DesktopAlert_CornerRadius">1</CornerRadius>
    <SolidColorBrush x:Key="DesktopAlert_ButtonIconStroke" Color="#FFFFFFFF"/>
    <LinearGradientBrush x:Key="DesktopAlert_ButtonIconFill" EndPoint="0.5,1" StartPoint="0.5,0">
        <GradientStop Color="#FF282828"/>
        <GradientStop Color="#FF7C7C7C" Offset="1"/>
    </LinearGradientBrush>

    <DataTemplate x:Key="RadDesktopAlertHeaderTemplate">
        <Grid 
            x:Name="Header" 
            Grid.Column="1" 
            Grid.Row="0" 
            VerticalAlignment="Top" 
            HorizontalAlignment="Stretch"
            Background="{StaticResource ContainerHeaderBackgroundBrush}">

            <StackPanel
                HorizontalAlignment="Left"
                Orientation="Horizontal">

                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="30" />
                        <ColumnDefinition Width="*" />
                    </Grid.ColumnDefinitions>

                    <Image 
                        RenderOptions.BitmapScalingMode="Fant"
                        Margin="5 0 5 0"
                        Source="/Images/GSI_Cloud_256.ico"/>

                    <Label
                        Grid.Column="1"
                        Foreground="White"
                        FontWeight="SemiBold"
                        FontSize="14"
                        VerticalContentAlignment="Center"
                        VerticalAlignment="Center"/>
                </Grid>
                
            </StackPanel>

            <StackPanel
                HorizontalAlignment="Right"
                Orientation="Horizontal">

                <Button Height="30" Width="30"  
	                x:Name="DesktopAlert_CloseButton" 
                    Content="🗙"
                    Background="Transparent"
                    BorderThickness="0"
                    Foreground="White"
                    FontSize="20"
                    Margin="0 -3 0 0"
                    FontWeight="Bold"
                    Command="{x:Static telerikNavigation:DesktopAlertCommands.Close}" />

            </StackPanel>

            <ContentPresenter 
                Content="{Binding}" 
                TextBlock.FontWeight="Bold" 
                Margin="0 0 0 0" 
                MinHeight="{Binding ActualHeight, ElementName=DesktopAlert_CloseButton}" Grid.RowSpan="2" VerticalAlignment="Top">

                <ContentPresenter.Resources>
                    <Style TargetType="{x:Type TextBlock}">
                        <Setter Property="TextWrapping" Value="Wrap"/>
                        <Setter Property="Foreground" Value="White" />
                        <Setter Property="VerticalAlignment" Value="Center" />
                        <Setter Property="HorizontalAlignment" Value="Left" />
                        <Setter Property="Margin" Value="30 0 0 0" />
                    </Style>
                </ContentPresenter.Resources>
            </ContentPresenter>

        </Grid>
    </DataTemplate>

    <ControlTemplate x:Key="RadDesktopAlertTemplate" TargetType="{x:Type telerikNavigation:RadDesktopAlert}">
        <Grid x:Name="LayoutRoot">
            <Border Background="White"
                    BorderThickness="{TemplateBinding BorderThickness}" 
                    CornerRadius="{StaticResource DesktopAlert_CornerRadius}">

                <Border BorderBrush="{StaticResource DesktopAlert_InnerBorderBrush}" BorderThickness="1">
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="*"/>
                            <RowDefinition Height="26" />
                        </Grid.RowDefinitions>
                        
                        <ContentPresenter 
                            ContentTemplate="{TemplateBinding HeaderTemplate}" 
                            Grid.Column="1" 
                            Content="{TemplateBinding Header}" 
                            Grid.Row="0" VerticalAlignment="Top"/>

                        <ContentPresenter 
                            x:Name="Content" 
                            Cursor="Hand" 
                            Grid.Column="1" 
                            HorizontalAlignment="Center" 
                            Margin="0 7 0 0" Grid.Row="1" VerticalAlignment="Top">

                            <ContentPresenter.Resources>
                                <Style TargetType="{x:Type TextBlock}">
                                    <Setter Property="TextWrapping" Value="Wrap"/>
                                    <Setter Property="TextTrimming" Value="CharacterEllipsis"/>
                                    <Setter Property="HorizontalAlignment" Value="Center" />
                                    <Setter Property="FontSize" Value="14" />
                                </Style>
                            </ContentPresenter.Resources>
                        </ContentPresenter>

                        <Grid Grid.Row="2">
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition Width="*" />
                                <ColumnDefinition Width="*" />
                                <ColumnDefinition Width="126" />
                            </Grid.ColumnDefinitions>

                            <Button
                                Style="{StaticResource ButtonStyle}"
                                Grid.Column="2"
                                Content="Open" 
                                Command="{Binding OnAlertCommandExecuted}"/>
                        </Grid>
                    </Grid>
                </Border>
            </Border>
        </Grid>
    </ControlTemplate>

    <Style TargetType="{x:Type telerikNavigation:RadDesktopAlert}">
        <Setter Property="Padding" Value="10 8"/>
        <Setter Property="Opacity" Value="0.9"/>
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="FontFamily" Value="Segoe UI"/>
        <Setter Property="FontSize" Value="14"/>
        <Setter Property="Background" Value="Transparent"/>
        <Setter Property="BorderBrush" Value="{StaticResource DesktopAlert_BorderBrush}"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="Width" Value="360"/>
        <Setter Property="Height" Value="130"/>
        <Setter Property="Template" Value="{StaticResource RadDesktopAlertTemplate}"/>
        <Setter Property="HeaderTemplate" Value="{StaticResource RadDesktopAlertHeaderTemplate}"/>
    </Style>
</ResourceDictionary>

DesktopAlert

answered on 24 May 2024

0 answers

87 views

Paste issue in RadRichTextBox

RadRichTextBox is not allowing copy pasting from different document and also from another RadRichTextBox.
If I am copying from same RadRichTextBox and then pasting it to same RadRichTextBox, then it is working fine.

So, I took reference from below doc:

WPF RichTextBox - Clipboard Support - Telerik UI for WPF

and implemented below function:

private void RadRichTextBox_CommandExecuting(object sender, CommandExecutingEventArgs e) 
{ 
    if (e.Command is PasteCommand) 
    { 
        e.Cancel = true; 
        // Obtain the document inside the clipboard 
        RadDocument document = ClipboardEx.GetDocument().ToDocument(); 
 
        // Change it according to your needs 
        document.Selection.SelectAll(); 
        RadDocumentEditor editor = new RadDocumentEditor(document); 
        editor.ChangeFontSize(Unit.PointToDip(12)); 
 
        // Insert it in RadRichTextBox 
        this.radRichTextBox.InsertFragment(new DocumentFragment(document)); 
    } 
}

I observed that if I am copying from another doc and pasting to that RadRichTextBox then

RadDocument document = ClipboardEx.GetDocument().ToDocument();

this line is giving System.NullReferenceException: 'Object reference not set to an instance of an object.'

How to fix this?

RichTextBox

asked on 24 May 2024

0 answers

54 views

Is the TableShape solution from the Demos application available for download?

Is the TableShape solution from the Demos application available for download? I've tried using the SDK samples browser and looking in Github repo. I can't find it. Also, does it support Drag and Drop?

Diagram

DragAndDrop

asked on 23 May 2024