Hello. Please give an idea to start with ...

I have RadWatermarkTextBox. And I've added INotifyDataErrorInfo to my VM implementation.

When DisplayMode  is Static - I can see validation errors. But When it's Tooltip telerik:ValidationErrorTemplateHelper.DisplayMode="ToolTip"
I can't see. 

By the way. if I use static mode I also don't see red bottom border line. And red arrow at top right corner, my error text is just a black font without read rectangle around and etc.

Looks like missing styles. But I can't understand which one. I imported xaml files for Win11 style. I see that there is a definition for RadWatermarkTextBox Validation Styles.

In my `telerik:RadGridView`, I have configured a `CellValidating="RadGridView_CellValidating"` callback.  It successfully catches a validation error, which then invokes this code:

e.IsValid = false;
e.ErrorMessage = "Enter a valid URL with 'https://' or 'http://'";

The cell does properly receive a red border, and what looks like a tool-tip notation in the top right corner.  However, unfortunately, I am unable to see the tool-tip, regardless if I hover or click on the tool-tip.  What are perhaps the top three to five reasons this might be happening?

It is specifically the "Documentation" column above, which is a `GridViewHyperlinkColumn`, which is failing validation...with no tool-tip showing.  To be clear, actually none of the columns have a working or "showable" tool-tip.  Even so, here is the code specifically for my "Documentation" column:

    <telerik:GridViewHyperlinkColumn
        IsReadOnly="{Binding IsEditModeWithPermissions, Converter={StaticResource InverseBooleanConverter}}"
        CellStyle="{StaticResource GridViewCellStyleStretch}" IsCustomSortingEnabled="False"
        ValidatesOnDataErrors="InViewMode"
        UniqueName="Documentation"
        MinWidth="80" MaxWidth="350" Width="150"
        DataMemberBinding="{Binding Documentation}"
        Name="DocumentationColumn" Header="Documentation">
        <telerik:GridViewHyperlinkColumn.CellTemplate>
            <DataTemplate>
                <TextBlock Text="{Binding DocumentationFormatted, StringFormat='{}{0}'}"/>
            </DataTemplate>
        </telerik:GridViewHyperlinkColumn.CellTemplate>
        <telerik:GridViewHyperlinkColumn.CellEditTemplate>
            <DataTemplate>
                <telerik:RadComboBox x:Name="DocumentationBox"
                    Text="{Binding Documentation, Mode=TwoWay}" KeyDown="RadComboBox_PreviewKeyDown"
                    IsTextSearchEnabled="True" TextSearchMode="StartsWith" OpenDropDownOnFocus="True"
                    StaysOpenOnEdit="False" Loaded="RadComboBox_Loaded" IsEditable="True" >
                    <telerik:RadComboBox.Resources>
                        <Style TargetType="TextBox">
                            <Setter Property="MaxLength" Value="{Binding DocumentationColumnWidth}" />
                        </Style>
                    </telerik:RadComboBox.Resources>
                </telerik:RadComboBox>
            </DataTemplate>
        </telerik:GridViewHyperlinkColumn.CellEditTemplate>
    </telerik:GridViewHyperlinkColumn>

And here is the RadGridView initial declaration:

    <telerik:RadGridView Grid.Row="1"
        CellValidating="RadGridView_CellValidating"
        BorderThickness="{Binding GridBorderThickness}"
        SelectedItem="{Binding SelectedLineItem, Mode=TwoWay}" Pasting="UxGrid_OnPasting"
        SelectionChanged="UxGrid_OnSelectionChanged" CopyingCellClipboardContent="UxGrid_OnCopyingCellClipboardContent"
        RowIndicatorVisibility="Visible"
        ValidatesOnDataErrors="InViewMode"
        EditTriggers="CellClick"
        ActionOnLostFocus="CommitEdit" Name="uxGrid"
        PreparingCellForEdit="uxGrid_PreparingCellForEdit" Deleted="UxGrid_OnDeleted"
        CellEditEnded="uxGrid_CellEditEnded"
        KeyDown="GridKeyDown"
        ScrollMode="Deferred"
        IsReadOnly="{Binding IsGridEditable, Converter={StaticResource InverseBooleanConverter}}"
        CanUserDeleteRows="{Binding CanEditNotReleased}" CanUserInsertRows="False"
        AreRowDetailsFrozen="True" EnableColumnVirtualization="False"
        RowDetailsVisibilityMode="{Binding RowDetailsVisibility}"
        DataLoaded="UxGrid_OnDataLoaded"
        RowEditEnded="RadGridViewRowEditEnded" BeginningEdit="RadGridViewBeginningEdit"
        AlternationCount="2" AutoGenerateColumns="False" 
        ItemsSource="{Binding LineItemsView, UpdateSourceTrigger=PropertyChanged}" SourceUpdated="uxGrid_SourceUpdated_1"
        Loaded="uxGrid_Loaded"
        LoadingRowDetails="UxGrid_OnLoadingRowDetails"
        ColumnWidthChanged="GridViewDataControl_OnColumnWidthChanged"
        DataContext="{Binding}"
        ColumnReordering="uxGrid_ColumnReordering"
        CanUserSortColumns="{Binding IsEditMode, Converter={StaticResource InverseBooleanConverter}}"
        IsFilteringAllowed="{Binding IsEditMode, Converter={StaticResource InverseBooleanConverter}}">

Hello, everyone,

I found different acts of ToolTip in different computers, the tooltip will drift to the left a little in some computers. Do you have any clue about the reason? How can we solve this? Is there any configuration of computer system we should adjust?

Is there a 

telerik:ComboBoxToolTipHelper.ShowToolTipOnTrimmedText="True" that works on the RadListBox (not only the RadComboBox)?

So a :ComboBoxToolTipHelper.ShowToolTipOnTrimmedText that works on the RadListBox?

Or another way of achieving it on the RadListBox?

Background:

I tried with a behavior on the row data template but it conflicts with the drag and drop by causing exceptions during the drag and drop (but that would incur another question thread).  I am just writing this to say i tried this avenue.

Right now my RadLitBox looks as follows:

<telerik:RadListBox x:Name="RLB_Source"   
                                        VerticalAlignment="Stretch" HorizontalAlignment="Stretch"
                                        ItemsSource="{Binding SourceSplitList, Mode=TwoWay}" 
                                        SelectionMode="Multiple"  
                                        telerik:ListBoxSelectedItemsBehavior.SelectedItemsSource="{Binding SelectedSourceItems}"
                                        DisplayMemberPath="Name" 
                                        AllowDrop="True" 
                                        ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                                        ScrollViewer.VerticalScrollBarVisibility="Visible"  
                                        Style="{StaticResource RadListBoxStyle}" 
                                        telerik:ComboBoxToolTipHelper.ShowToolTipOnTrimmedText="True"
                                        ToolTipService.ToolTip="{Binding Text, RelativeSource={RelativeSource Self}}" 
                                        >

Because of the lines:

                                        telerik:ComboBoxToolTipHelper.ShowToolTipOnTrimmedText="True"
                                        ToolTipService.ToolTip="{Binding Text, RelativeSource={RelativeSource Self}}" 

There is a tool tip showing the text of every RadListBox row - and not only where the text is trimmed.

How is the text trimmed? Short answer: i have a telerik:RadListBoxItem style template where text trimming is set as below:  

         <Setter Property="TextTrimming" Value="CharacterEllipsis"></Setter>

Here is the entire control template:

 <ControlTemplate TargetType="{x:Type telerik:RadListBoxItem}">
                    <Border
                                x:Name="Bd"
                                Padding="{TemplateBinding Padding}"
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                SnapsToDevicePixels="true">
                        <ContentPresenter 
                                   HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                   VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                   SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
                                   >

                            <ContentPresenter.Resources>
                                <Style TargetType="TextBlock">
                                    <Setter Property="TextTrimming" Value="CharacterEllipsis"></Setter>
                                    <Setter Property="TextWrapping" Value="NoWrap" />
                                    <Setter Property="Text" Value="{Binding Name}" />
                                    <Setter Property="ToolTipService.ToolTip" Value="{Binding Name}" />
                                </Style>
                            </ContentPresenter.Resources>
                        </ContentPresenter> 
                    </Border>  

</ControlTemplate>

Trimming is set on the TextBlock that appears (implicitly by Telerik) in the Contentpresenter.

The whole styling is below if relevant for answering the question:

My RadListBox has this style:

 <Style x:Key="RadListBoxStyle" TargetType="{x:Type telerik:RadListBox}">
        <Setter Property="AlternationCount" Value="2" />
        <Setter Property="ScrollViewer.CanContentScroll" Value="True" />
        <Setter Property="VirtualizingPanel.ScrollUnit" Value="Pixel" />
        <Setter Property="VirtualizingPanel.VirtualizationMode" Value="Recycling" />
        <Setter Property="BorderThickness" Value="1" />
        <Setter Property="BorderBrush" Value="{StaticResource Gray}" />
        <Setter Property="Background" Value="{DynamicResource White}" />
        <Setter Property="SelectionMode" Value="Multiple" />
        <Setter Property="FontSize" Value="12pt" />
        <Setter Property="FontFamily" Value="{StaticResource SourceSansPro-Regular}" />
        <Setter Property="Foreground" Value="{StaticResource Brand Default}" />
        <Setter Property="Margin" Value="0,2,0,0" />
        <Setter Property="HorizontalAlignment" Value="Stretch" />
        <Setter Property="ItemContainerStyle" Value="{StaticResource DefaultDragDropRadListBoxItemStyle}" /> 
    </Style> 

In the the above style there is an ItemContainerStyle.  Here it goes:

  <Style x:Key="DefaultDragDropRadListBoxItemStyle" TargetType="telerik:RadListBoxItem">
        <Setter Property="BorderBrush" Value="{StaticResource 'Gray Light'}" />
        <Setter Property="BorderThickness" Value="0,0,0,1" />
        <Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True" /> 

        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type telerik:RadListBoxItem}">
                    <Border
                                x:Name="Bd"
                                Padding="{TemplateBinding Padding}"
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                SnapsToDevicePixels="true">
                        <ContentPresenter 
                                   HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                   VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                   SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
                                   >

                            <ContentPresenter.Resources>
                                <Style TargetType="TextBlock">
                                    <Setter Property="TextTrimming" Value="CharacterEllipsis"></Setter>
                                    <Setter Property="TextWrapping" Value="NoWrap" />
                                    <Setter Property="Text" Value="{Binding Name}" />
                                    <Setter Property="ToolTipService.ToolTip" Value="{Binding Name}" />
                                </Style>
                            </ContentPresenter.Resources>
                        </ContentPresenter> 
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter TargetName="Bd" Property="TextElement.Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
                        </Trigger>
                        <Trigger Property="ItemsControl.AlternationIndex" Value="0">
                            <Setter Property="Background" Value="White"></Setter>
                        </Trigger>
                        <Trigger Property="ItemsControl.AlternationIndex" Value="1">
                            <Setter Property="Background" Value="{StaticResource 'Gray Lighter'}"></Setter>
                        </Trigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="False" />
                                <Condition Property="IsMouseOver" Value="True" />
                                <Condition Property="IsKeyboardFocused" Value="False" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Bd" Property="Background" Value="{StaticResource Brand Light}" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="False" />
                                <Condition Property="IsMouseOver" Value="False" />
                                <Condition Property="IsKeyboardFocused" Value="True" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Bd" Property="Background" Value="{StaticResource Brand Secondary}" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="True" />
                                <Condition Property="IsMouseOver" Value="False" />
                                <Condition Property="IsKeyboardFocused" Value="True" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Bd" Property="Background" Value="{StaticResource Brand Secondary}" />
                            <Setter Property="Foreground" Value="White" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="True" />
                                <Condition Property="IsMouseOver" Value="True" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Bd" Property="Background" Value="{StaticResource Brand Secondary}" />
                            <Setter Property="Foreground" Value="White" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="True" />
                                <Condition Property="IsMouseOver" Value="False" />
                                <Condition Property="IsKeyboardFocused" Value="False" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Bd" Property="Background" Value="{StaticResource Brand Secondary}" />
                            <Setter Property="Foreground" Value="White" />
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsSelected" Value="False" />
                                <Condition Property="IsMouseOver" Value="True" />
                                <Condition Property="IsKeyboardFocused" Value="True" />
                            </MultiTrigger.Conditions>
                            <Setter TargetName="Bd" Property="Background" Value="{StaticResource Brand Secondary}" />
                        </MultiTrigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter> 
    </Style>

Good day! Which template is responsible for tooltip while dragging or resizing task? Can we customize this object?

Thank You for answers

Hi, trying to speed up the points-plot (around 1000-5000 points)

I can so far conclude that we can only get a tooltip for XamlRenderOptions DefaultVisualsRenderMode="Separate" otw, no tooltip is visible.

I have tried a few options (see below)  - but maybe the behavior changes once I change the render mode ?

- XamlRenderOptions DefaultVisualsRenderMode="Batch"  -> no tooltip
- (geometrytype not supported by scatterpointseries)
- BitmapRenderOptions -> no tooltip
- Direct2DRenderOptions -> not tooltip

Hi,

I observed that when the tooltip disappears, I need to move out of control before I can see the tooltip again (also in your sample with England map you can see this effect). It is reasonable, but I have a control that display a histogram plot. I could move the mouse over different bar and I would like that the tooltip could show again.
Is there a way to reactivate tooltip without exit from control?

Thank you

Luigi

Hello.

When using the tooltip content separately, the namespace is shown together.

If I use telerik:RadToolTipService.ToolTipContent="Content" it looks correct.

However, the above source was selected because it should be different from the button font setting.

When telerik:RadToolTipContentView is deleted, only other namespaces are shown, textblock content is not.

Please check.

Thanks.

I'm looking for a quick way to enabled/disable tooltips application wide (globally).  I realize I can do the following on EVERY single control:

repeat for each control in my application, however, I was hoping there was an easy way to enable/disable all tooltips in my application?

Cheers, Rob.