Questions on UI for WPF Forum

1 answer

132 views

Is there the capability to generate and display slots when an appointment is started to be dragged?

I.e. I have an appointment and I want to restrict that it can only be moved within a 2 day window either direction. I can do the CanDrop/Drop in a CustomDragDropBehavior to do the actual restriction, however I'd like to visually show the user that they cannot move it 3 days.

ScheduleView

answered on 31 Jul 2015

4 answers

563 views

Handler type not valid error with GridViewRow Selected event

I'm getting "Handler type not valid" when I set the Selected event in the RowStyle.
My XAML is:

<telerik:RadGridView.RowStyle>

<Style TargetType="telerik:GridViewRow" >

<EventSetter Event="Selected" Handler="pHandleItemSelected" />

</Style>

</telerik:RadGridView.RowStyle>

And my event handler is:

Private Sub pHandleItemSelected(sender As System.Object, e As RoutedEventArgs)

End

The documentation says that this is the type of handler. So what is the problem?

GridView

answered on 31 Jul 2015

4 answers

299 views

How to know ActualHeight from shape?

Hello,

I want to align some custom shapes vertically from my diagram. I make a method called AlignShapes inside a class inheried from SerializableGraphSourceBase<Shape_VM, Link_VM>, and this method is invoked always when InternalItems Changed.

I have create my custom shape class, inherited from NodeViewModelBase and I give it 2 properties, Height and Width (double), that I binded these properties in XAML. Depend of the custom shape, height value is NaN for auto-size, then, when I get the value from custom shape, it return NaN, but the shape in the diagram has a specific height value that I do not know to get.

How can I get Shape ActualHeight?

Thank you!

Diagram

answered on 31 Jul 2015

1 answer

325 views

Offline CHM documentation

Hello,

in the download page, the offline CHM documentation is marked as Telerik_UI_for_WPF_ApiReference_2015_2_728.chm.

When the file is downloaded and opened, it says that the documentation is for the previous version: Assembly: Telerik.Windows.Controls.Input (in Telerik.Windows.Controls.Input.dll) Version: 2015.2.623.40 (2015.2.623.40)

Naturally, the new members are missing from the documentation...

General Discussions

answered on 30 Jul 2015

2 answers

113 views

[Solved] Prevent selected item on child nodes

Hi,

How can I prevent selected items on treelistview child nodes?

Thank you

TreeListView

answered on 30 Jul 2015

1 answer

104 views

Get RowDetails elements

I'm using a GridView wich RowDetailsTemplate is another GridView, i need to iterate inner GridView rows... i'm iterating parent GridView rows this way

IList<GridViewRow> rows = radGridView.ChildrenOfType<GridViewRow>();

but how can i get the GridView inside the row details template

GridView

answered on 30 Jul 2015

1 answer

548 views

Getting the number of pages

Hi,

How to get the number of pages of the PdfViewer document?
I am pasting (in case) a part of the code where I am importing the pdf document.

public void ShowPdfFile(RadPdfViewer rad, string documentPath)

{

_radPdfViewer = rad;

_documentPath = documentPath;

try

{

var readAllBytes = File.ReadAllBytes(documentPath);

var memoryStream = new MemoryStream(readAllBytes);

rad.DocumentSource = new PdfDocumentSource(memoryStream);

}

catch (Exception e)

{

}

Is it possible to get also the number of pages of the RadRichTextBox document?

BR,

Marta

PDFViewer

answered on 30 Jul 2015

13 answers

1.3K+ views

How to filter TreeView

Do you guys have a sample solution that does the filter on the Tree Generically. I have searched and all the examples are hard coded to filter couple of levels but they don't work if the tree has multiple levels.

Could you please help me with a solution for this? I have tried using CollectionViewSource, but not able to filter below the Root level I am able to filter only at the top level.

Lets for example I have this Tree - got this from one of your examples.

Animal
Dog
Cat
Fish
Fresh Water
Roach
Bream
Salt Water
Skate
SkateChild
Soul

In this example, If I type "d" , I should get the following result.
Animal
Dog
Fish
Salt Water
Skate
SkateChild

Please let me know if you can help me with a solution that would work for n level of nodes.

This is highly critical for us and any help on this is really appreciated.

TreeView

answered on 30 Jul 2015

1 answer

224 views

Updating Appointments in backgroundworker

Hey,

I am trying to get my appointments to update in a backgroundworker. I have the backgroundworker up and running but when I assign my appointments to the ObservableCollection on the viewmodel in the RunWorkerCompleted and fire the NofityPropertyChanged I get an error "Must create DependencySource on same Thread as the DependencyObject." I do not get this error when notifying of changes to strings and ints. Do you know of any reasons why the NotifyPropertyChanged would not work.

Thanks

ScheduleView

answered on 30 Jul 2015

1 answer

401 views

ItemContainerStyle only applies for the first level of items

Hi there.

I ran into a problem when changing the template for TreeView control. I modified the ItemContainerStyle as follows:

<Style x:Key="FileBrowserItemStyle" TargetType="{x:Type telerik:RadTreeViewItem}">
<Setter Property="FocusVisualStyle">
<Setter.Value>
<Style>
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="0" Stroke="Transparent" StrokeThickness="0"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Setter.Value>
</Setter>
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Padding" Value="1,4,5,4"/>
<Setter Property="MinHeight" Value="24"/>
<Setter Property="IsDropAllowed" Value="True"/>
<Setter Property="IsEnabled" Value="True"/>
<Setter Property="IsTabStop" Value="False"/>
<Setter Property="KeyboardNavigation.TabNavigation" Value="Local"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type telerik:RadTreeViewItem}">
<Grid x:Name="RootElement" UseLayoutRounding="True">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="EditStates">
<VisualState x:Name="Display"/>
<VisualState x:Name="Edit">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="EditHeaderElement">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Header">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="Disabled">
<Storyboard>
<DoubleAnimation Duration="0" To="0.35" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Header"/>
<DoubleAnimation Duration="0" To="0.35" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Image"/>
</Storyboard>
</VisualState>
<VisualState x:Name="MouseOver">
<Storyboard>
<DoubleAnimation Duration="0:0:0.1" To="1" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="MouseOverVisual"/>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="SelectionVisual">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="SelectedUnfocused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="SelectionUnfocusedVisual">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="LoadingOnDemandStates">
<VisualState x:Name="LoadingOnDemand">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="LoadingVisual">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Expander">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Collapsed</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Duration="0:0:1" From="0" RepeatBehavior="Forever" To="359" Storyboard.TargetProperty="Angle" Storyboard.TargetName="LoadingVisualAngleTransform"/>
</Storyboard>
</VisualState>
<VisualState x:Name="LoadingOnDemandReverse"/>
</VisualStateGroup>
<VisualStateGroup x:Name="FocusStates">
<VisualState x:Name="Focused">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="FocusVisual">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Unfocused"/>
</VisualStateGroup>
<VisualStateGroup x:Name="ExpandStates">
<VisualState x:Name="Expanded">
<Storyboard>
<ObjectAnimationUsingKeyFrames Duration="0" Storyboard.TargetProperty="Visibility" Storyboard.TargetName="ItemsHost">
<DiscreteObjectKeyFrame KeyTime="0">
<DiscreteObjectKeyFrame.Value>
<Visibility>Visible</Visibility>
</DiscreteObjectKeyFrame.Value>
</DiscreteObjectKeyFrame>
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Collapsed"/>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Grid x:Name="HeaderRow" Background="Transparent" MinHeight="{TemplateBinding MinHeight}" SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="6" Grid.Column="2" CornerRadius="2"/>
<Border x:Name="MouseOverVisual" BorderBrush="#FF838383" BorderThickness="1" Grid.ColumnSpan="6" Grid.Column="2" CornerRadius="1" Opacity="0">
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFDADADA" Offset="1"/>
<GradientStop Color="#FFB6B6B6" Offset="0"/>
</LinearGradientBrush>
</Border.Background>
<Border BorderBrush="White" BorderThickness="1" Background="{x:Null}" CornerRadius="0"/>
</Border>
<Border x:Name="SelectionUnfocusedVisual" BorderBrush="#FFDBDBDB" BorderThickness="1" Grid.ColumnSpan="6" Grid.Column="2" CornerRadius="1" Visibility="Collapsed">
<Border.Background>
<LinearGradientBrush EndPoint="0,1">
<GradientStop Color="#FFF8F6F9" Offset="0"/>
<GradientStop Color="#FFCBCBCB" Offset="1"/>
</LinearGradientBrush>
</Border.Background>
<Border BorderBrush="Transparent" BorderThickness="1" Background="{x:Null}" CornerRadius="0"/>
</Border>
<Border x:Name="SelectionVisual" BorderBrush="#FF494949" BorderThickness="1" Grid.ColumnSpan="6" Grid.Column="2" CornerRadius="1" Visibility="Collapsed">
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFBBBBBB" Offset="1"/>
<GradientStop Color="#FF959595"/>
</LinearGradientBrush>
</Border.Background>
<Border BorderBrush="White" BorderThickness="1" Background="{x:Null}" CornerRadius="0"/>
</Border>
<StackPanel x:Name="IndentContainer" Orientation="Horizontal">
<Rectangle x:Name="IndentFirstVerticalLine" Stroke="#FFCCCCCC" Visibility="Collapsed" VerticalAlignment="Top" Width="1"/>
</StackPanel>
<Grid x:Name="ListRootContainer" Grid.Column="1" HorizontalAlignment="Center" MinWidth="21">
<Rectangle x:Name="HorizontalLine" HorizontalAlignment="Right" Height="1" Stroke="#FFCCCCCC" VerticalAlignment="Center"/>
<Rectangle x:Name="VerticalLine" HorizontalAlignment="Center" Stroke="#FFCCCCCC" VerticalAlignment="Top" Width="1"/>
<ToggleButton x:Name="Expander" Background="{TemplateBinding Background}" IsTabStop="False"/>
<Grid x:Name="LoadingVisual" HorizontalAlignment="Center" RenderTransformOrigin="0.5,0.5" Visibility="Collapsed" VerticalAlignment="Center">
<Grid.RenderTransform>
<TransformGroup>
<RotateTransform Angle="0" CenterY="0.5" CenterX="0.5"/>
</TransformGroup>
</Grid.RenderTransform>
<Path Data="M1,0A1,1,90,1,1,0,-1" Height="10" StrokeStartLineCap="Round" Stretch="Fill" Stroke="{TemplateBinding Foreground}" StrokeThickness="1" Width="10"/>
<Path Data="M0,-1.1L0.1,-1 0,-0.9" Fill="{TemplateBinding Foreground}" HorizontalAlignment="Left" Height="4" Margin="5,-1.5,0,0" Stretch="Fill" StrokeThickness="1" VerticalAlignment="Top" Width="4"/>
</Grid>
</Grid>
<Image x:Name="Image" Grid.Column="3" HorizontalAlignment="Center" MaxWidth="20" MaxHeight="20" Margin="2" VerticalAlignment="Center"/>
<Rectangle x:Name="FocusVisual" Grid.ColumnSpan="6" Grid.Column="2" IsHitTestVisible="False" RadiusY="3" RadiusX="3" Stroke="Black" StrokeThickness="1" StrokeDashArray="1 2" Visibility="Collapsed"/>
<Grid x:Name="HeaderContentPanel" Background="Transparent" Grid.ColumnSpan="2" Grid.Column="4">
<ContentControl x:Name="Header" ContentTemplate="{TemplateBinding HeaderTemplate}" Content="{TemplateBinding Header}" Foreground="{Binding Foreground, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" IsTabStop="False" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
<ContentPresenter x:Name="EditHeaderElement" ContentTemplate="{TemplateBinding HeaderEditTemplate}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="Collapsed" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
<CheckBox x:Name="CheckBoxElement" Grid.Column="2" IsTabStop="False" Margin="5,0,0,0" Visibility="Collapsed" VerticalAlignment="Center">
<telerik:StyleManager.Theme>
<telerik:Office_BlackTheme/>
</telerik:StyleManager.Theme>
</CheckBox>
<RadioButton x:Name="RadioButtonElement" Grid.Column="2" IsTabStop="False" Margin="5,0,0,0" Visibility="Collapsed" VerticalAlignment="Center">
<telerik:StyleManager.Theme>
<telerik:Office_BlackTheme/>
</telerik:StyleManager.Theme>
</RadioButton>
</Grid>
<ItemsPresenter x:Name="ItemsHost" Grid.Row="1" Visibility="Collapsed"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<telerik:TreeViewPanel IsItemsHost="True" IsVisualCacheEnabled="False" VerticalAlignment="Bottom"/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
</Style>

and assigned the template to the control:

<telerik:RadTreeView x:Name="FileList" FontSize="18" FontFamily="Courier New" HorizontalAlignment="Left" Height="250" VerticalAlignment="Top" Width="150" Background="#FFEEEEEE" Style="{DynamicResource FileBrowserStyl}" ItemContainerStyle="{DynamicResource FileBrowserItemStyle}"/>

All I really did was changing the color of the selected item from orange to grey but it only seems to change the color for the first level of hierarchy (image attached). I thought the ItemContainerStyle applies for all levels. Am I missing something?

Would really appreciate your help.

Thank you

TreeView

answered on 30 Jul 2015