Questions on UI for WPF Forum

25,630 questions

1 answer

133 views

Toolbar Button size changed after upgrading to 2013.1.403.40 (Q1 2013 SP1)

After upgrading to Q1 2013 SP1 (2013.1.403.40) my RadButtons inside the RadToolBar became huge and I cannot control their size with Height and Width properties. Please take a look at the attached before and after screen shots.

Here is my XAML:

<t:RadToolBar DockPanel.Dock="Top" Margin="0" Width="{Binding ElementName=DockPanelMain, Path=ActualWidth}" 
  IsTabStop="False" GripVisibility="Collapsed" OverflowButtonVisibility="Collapsed">
  <t:RadButton>
    <Image Stretch="None" Source="Images/Image32.png" />
  </t:RadButton>
  ...

</t:RadToolBar>

I tried removing Width="{Binding ElementName=DockPanelMain, Path=ActualWidth}" but that didn't help. I also tried adding Width="36" Height="36" to RadButton and Width="32" Height="32" to the Image but that did not help either...

What do I need to do to get my buttons to normal size again?

Thanks...

ToolBar

answered on 10 Apr 2013

0 answers

161 views

Vertical borders between only some columns

Is there a way to create a border between only certain columns without using a template for the cells?

I have a GridView in which we want to place a vertical border on some columns. I can do this by adding a border to the cell template, but this seems to slow down the grid significant. I do not know why it becomes slower but once I put in a template it gets slow so I wonder if it is possible to add a border without using a template or some other way.

GridView

asked on 10 Apr 2013

1 answer

79 views

Show just a specific value on Y-axis

I need to build a chart that shows only a specific value and tick on Y-axis.

E.g. I want to show only the Y corresponding to the plt point in the image at the link below. I don't want to show ther others Y values at Y-axis.
Chart example

Does anybody know if it's possible??
Does anybody know how to do that?

Thx in advance!

Chart

answered on 10 Apr 2013

1 answer

210 views

Error in creating RAD Gauge

Hi Telerik team,

Please help me on one issue with Telerik Controls.

When I create a simple Rad Gauge control in my project I get a namespace error. The project is done in Visual studio 2008. I dont have much idea about rad Gauge creation. Please explain about this error and how to solve this.

The error is "The tag 'RadRadialGauge' does not exist in XML namespace 'http://schemas.telerik.com/2008/xaml/presentation'."

I mention below the code that implemented in the project for the control creation.
----------------------------------------------------------------------------------------------------------
<Window x:Class="Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">
<Grid>
<telerik:RadRadialGauge x:Name="radialGauge" Width="300" Height="300">
<telerik:RadialScale Min="1"
Max="12">
<telerik:RadialScale.Indicators>
<telerik:Needle />
<telerik:Pinpoint/>
</telerik:RadialScale.Indicators>
</telerik:RadialScale>
</telerik:RadRadialGauge>
</Grid>
</Window>
------------------------------------------------------------------------------------------------------------

Gauges

answered on 10 Apr 2013

1 answer

90 views

InitialPosition="FloatingDockable" - Object reference not set to an instance of an object

Hi, using latest WPF controls (2013.1.220.40), when I paste in an example directly from the examples demo (First look for the Docking panel), I get the following error:

Object reference not set to an instance of an object.

at Telerik.Windows.Controls.InternalWindow.PopupWindowHost.PopupHostManagerBase.GetManager(DependencyObject obj) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\InternalWindow\PopupWindowHost.cs:line 308

at Telerik.Windows.Controls.InternalWindow.SinglePopupWindowHost.GetHostManager() in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\InternalWindow\SinglePopupWindowHost.cs:line 22

at Telerik.Windows.Controls.InternalWindow.PopupWindowHost.Open(Boolean isModal) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\InternalWindow\PopupWindowHost.cs:line 77

at Telerik.Windows.Controls.WindowBase.ShowWindow(Boolean isModal) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Navigation\Window\WindowBase.cs:line 891

at Telerik.Windows.Controls.Docking.ToolWindow.Open() in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Parts\ToolWindow.cs:line 121

at Telerik.Windows.Controls.RadDocking.OpenInToolWindow(RadSplitContainer container) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Docking\RadDocking.cs:line 797

at Telerik.Windows.Controls.RadDocking.InitializeSplitContainer(RadSplitContainer container) in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Docking\RadDocking.cs:line 1325

at Telerik.Windows.Controls.RadDocking.OnApplyTemplate() in c:\TB\135\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Docking\RadDocking.cs:line 180

at System.Windows.FrameworkElement.ApplyTemplate()

at Microsoft.Expression.Platform.WPF.WpfViewNodeManager.EnsureElementInDictionary(Object root, ViewNode knownAncestor)

If I change the Initial position of the control to DockLeft (or anything other than floating), the demo works.

Is there a bug in the latest dlls ?

thanks!

Docking

answered on 10 Apr 2013

5 answers

203 views

[Solved] "Styling a Cell" & "INotifyDataErrorInfo" throws InvalidOperationException

Hello Forum

I was following your Tutorial about "Styling a Cell" (http://www.telerik.com/help/wpf/gridview-styling-cell.html). My ViewModel implements INotifyDataErrorInfo and exposes Errors through it.

When i am hovering the mouse over the red triangle to see the error tool tip, i get the following Exception: 'xform' name cannot be found in the name scope of 'System.Windows.Controls.Grid'.

Do you have any suggestions?

Thanks,
Michael

Here is my Code:
...by the way: i have prepared a sample solution, but i can't attach it to the post.

MainWindow.xaml:

<Window x:Class="TelerikGridViewCellStyle.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"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:telerikGridViewCellStyle="clr-namespace:TelerikGridViewCellStyle" mc:Ignorable="d"

Title="MainWindow" Height="350" Width="525" d:DataContext="{d:DesignInstance telerikGridViewCellStyle:ViewModel}">

<Window.Resources>

<Style TargetType="{x:Type telerik:GridViewCell}">

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="{x:Type telerik:GridViewCell}">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="SelectionStates">

<VisualState x:Name="Unselected"/>

<VisualState x:Name="Selected">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Selected">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="CommonStates">

<VisualState x:Name="Normal"/>

<VisualState x:Name="Current">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Current">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="MouseOver">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Over">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="EditingStates">

<VisualState x:Name="Edited">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Margin" Storyboard.TargetName="PART_ContentPresenter">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Thickness>0</Thickness>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="VerticalAlignment" Storyboard.TargetName="PART_ContentPresenter">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<VerticalAlignment>Stretch</VerticalAlignment>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Background" Storyboard.TargetName="PART_CellBorder">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<SolidColorBrush Color="White"/>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Display"/>

</VisualStateGroup>

<VisualStateGroup x:Name="DisabledStates">

<VisualState x:Name="Enabled"/>

<VisualState x:Name="Disabled">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="PART_CellBorder">

<DiscreteDoubleKeyFrame KeyTime="0" Value="0.4"/>

</DoubleAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="PART_ContentPresenter">

<DiscreteDoubleKeyFrame KeyTime="0" Value="0.7"/>

</DoubleAnimationUsingKeyFrames>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Disabled">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

<VisualStateGroup x:Name="ValueStates">

<VisualState x:Name="CellValid"/>

<VisualState x:Name="CellInvalid">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Invalid">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="InvalidUnfocused">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="Visibility" Storyboard.TargetName="Background_Invalid_Unfocused">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Visibility>Visible</Visibility>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Border x:Name="PART_CellBorder" BorderBrush="{TemplateBinding VerticalGridLinesBrush}" Background="{Binding Background, RelativeSource={RelativeSource TemplatedParent}}" Margin="1,0,0,0">

<Border.BorderThickness>

<Binding ConverterParameter="Right" Path="VerticalGridLinesWidth" RelativeSource="{RelativeSource TemplatedParent}">

<Binding.Converter>

<telerik:GridLineWidthToThicknessConverter/>

</Binding.Converter>

</Binding>

</Border.BorderThickness>

</Border>

<Border x:Name="Background_Over" BorderBrush="#FFFFC92B" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed">

<Border BorderBrush="White" BorderThickness="1">

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFFFBA3" Offset="1"/>

<GradientStop Color="#FFFFFBDA" Offset="0"/>

</LinearGradientBrush>

</Border.Background>

</Border>

<Border x:Name="Background_Selected" BorderBrush="#FFFFC92B" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed">

<Border BorderBrush="White" BorderThickness="1">

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFCE79F" Offset="1"/>

<GradientStop Color="#FFFDD3A8"/>

</LinearGradientBrush>

</Border.Background>

</Border>

<Border x:Name="Background_Current" BorderBrush="#FF848484" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed"/>

<Border x:Name="Background_Invalid" BorderBrush="#FFDB000C" BorderThickness="1" Background="White" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,2,2" Visibility="Collapsed">

<Border.ToolTip>

<ToolTip x:Name="validationTooltip" Content="{TemplateBinding Errors}" Placement="Right">

<ToolTip.Template>

<ControlTemplate TargetType="{x:Type ToolTip}">

<Grid x:Name="Root" Margin="5,0" Opacity="0" RenderTransformOrigin="0,0">

<Grid.RenderTransform>

<TranslateTransform X="-25"/>

</Grid.RenderTransform>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="OpenStates">

<VisualStateGroup.Transitions>

<VisualTransition From="{x:Null}" GeneratedDuration="0" GeneratedEasingFunction="{x:Null}" Storyboard="{x:Null}" To="{x:Null}"/>

<VisualTransition From="{x:Null}" GeneratedDuration="0:0:0.2" GeneratedEasingFunction="{x:Null}" To="Open">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="X" Storyboard.TargetName="xform">

<SplineDoubleKeyFrame KeyTime="0:0:0.2" Value="0"/>

</DoubleAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root">

<SplineDoubleKeyFrame KeyTime="0:0:0.2" Value="1"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

</VisualTransition>

</VisualStateGroup.Transitions>

<VisualState x:Name="Closed">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root">

<SplineDoubleKeyFrame KeyTime="0" Value="0"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Open">

<Storyboard>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="X" Storyboard.TargetName="xform">

<SplineDoubleKeyFrame KeyTime="0" Value="0"/>

</DoubleAnimationUsingKeyFrames>

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="Root">

<SplineDoubleKeyFrame KeyTime="0" Value="1"/>

</DoubleAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Border Background="#052A2E31" CornerRadius="5" Margin="4,4,-4,-4"/>

<Border Background="#152A2E31" CornerRadius="4" Margin="3,3,-3,-3"/>

<Border Background="#252A2E31" CornerRadius="3" Margin="2,2,-2,-2"/>

<Border Background="#352A2E31" CornerRadius="2" Margin="1,1,-1,-1"/>

<Border Background="#FFDC000C" CornerRadius="2"/>

<Border CornerRadius="2">

<ItemsControl>

<ItemsControl.ItemsPanel>

<ItemsPanelTemplate>

<StackPanel IsItemsHost="True"/>

</ItemsPanelTemplate>

</ItemsControl.ItemsPanel>

<ItemsControl.ItemTemplate>

<DataTemplate>

<TextBlock Foreground="White" MaxWidth="250" Margin="8,4" TextWrapping="Wrap" Text="{Binding}"/>

</DataTemplate>

</ItemsControl.ItemTemplate>

</ItemsControl>

</Border>

</Grid>

</ControlTemplate>

</ToolTip.Template>

</ToolTip>

</Border.ToolTip>

<Grid Background="Transparent" HorizontalAlignment="Right" Height="12" Margin="1,-4,-4,0" VerticalAlignment="Top" Width="12">

<Path Data="M1,0L6,0A2,2,90,0,1,8,2L8,7z" Fill="#FFDB000C" Margin="1,3,0,0"/>

<Path Data="M0,0L2,0 8,6 8,8" Fill="White" Margin="1,3,0,0"/>

</Grid>

</Border>

<Border x:Name="Background_Invalid_Unfocused" BorderBrush="#FFCE7D7D" BorderThickness="1" Grid.ColumnSpan="2" Grid.Column="2" CornerRadius="1" Margin="1,1,1,2" Opacity="1" Visibility="Collapsed">

<Border BorderThickness="1">

<Border.BorderBrush>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFEBF4FD"/>

<GradientStop Color="#FFDBEAFD" Offset="1"/>

</LinearGradientBrush>

</Border.BorderBrush>

<Border.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FFFCDCDC"/>

<GradientStop Color="#FFFCC1C1" Offset="1"/>

</LinearGradientBrush>

</Border.Background>

</Border>

<Border x:Name="Background_Disabled" BorderBrush="#FFF8F8F8" BorderThickness="1" Background="#FFE0E0E0" Grid.ColumnSpan="2" Grid.Column="2" Margin="0,0,1,1" Visibility="Collapsed"/>

<ContentPresenter x:Name="PART_ContentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

<Setter Property="Padding" Value="5,0,3,0"/>

<Setter Property="BorderBrush" Value="#FFCBCBCB"/>

<Setter Property="BorderThickness" Value="0,0,1,0"/>

<Setter Property="VerticalContentAlignment" Value="Center"/>

<Setter Property="HorizontalContentAlignment" Value="Stretch"/>

<Setter Property="Background" Value="Transparent"/>

<Setter Property="SnapsToDevicePixels" Value="True"/>

<Setter Property="FocusVisualStyle">

<Setter.Value>

<Style>

<Setter Property="Control.Template">

<Setter.Value>

<ControlTemplate>

<Border BorderBrush="#FF848484" BorderThickness="1" CornerRadius="1" Margin="1,1,2,2"/>

</ControlTemplate>

</Setter.Value>

</Setter>

</Style>

</Setter.Value>

</Setter>

</Style>

</Window.Resources>

<Grid>

<telerik:RadGridView ItemsSource="{Binding Items}" />

</Grid>

</Window>

MainWindow.xaml.cs:

using System.Windows;

namespace TelerikGridViewCellStyle

{

    /// <summary>

    /// Interaction logic for MainWindow.xaml

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

            DataContext = new ViewModel();

        }

    }

}

ViewModel.cs:

using System;

using System.Collections;

using System.Collections.ObjectModel;

using System.ComponentModel;

namespace TelerikGridViewCellStyle

{

public class ViewModel

{

public ObservableCollection<DataItem> Items { get; set; }

public ViewModel()

{

Items = new ObservableCollection<DataItem>();

Items.Add(new DataItem {A = "ABC", B = "hihi"});

Items.Add(new DataItem {A = "DEF", B = "hihi"});

Items.Add(new DataItem {A = "GHI", B = "hihi"});

}

public class DataItem : INotifyDataErrorInfo

{

public string A { get; set; }

public string B { get; set; }

public IEnumerable GetErrors(string propertyName)

{

return "Error";

}

public bool HasErrors { get { return true; } }

public event EventHandler<DataErrorsChangedEventArgs> ErrorsChanged;

}

GridView

answered on 10 Apr 2013

4 answers

190 views

[Solved] Update removed Implicit Theme(2013.1.403.45)

I installed the WPF SP1 update this morning to my application and it removed my Implicit Theme. Did I do something wrong? Should I have chosen the No-XAML version during the Upgrade? How do I re-add my Theme correctly? I found the binaries for that theme but now it crashes when I start Debugging.

EDIT:

Never mind, I still don't understand why it removed my Theme dll references but I was able to re add my implicit theme.

Installer and Visual Studio Extensions

answered on 10 Apr 2013

2 answers

182 views

Grouping on X-Axis

If I have an object that looks like this:
Object
customerid
value
date

I now want to have the X-axis grouped on the customerid (the same id occurs more than once). This I can do with the CategoryBinding. I'm using a ChartDataSource as the ItemSource for the Series.
Now all the values of the customerId will be displayed next to each other. What I would want to do is to only show one bar for each of the customerId and the value to use an aggregate function (e.g. sum, mean, min, max). The best way I have been able to do this is with the SamplingThreshold. But this is not correct as it could generate multiple bars for one customerId while another one is not displayed at all as the number of occurrences differ.
I am able to show the aggregated value grouped on date using SamplingUnit and SampleInterval. But I also want to be able to group on other types than just dates.

I am doing this all in code-behind.

I might have missed something completely or be doing something wrong but I have not found a way to achieve it.
How should I go about doing this?

ChartView

answered on 10 Apr 2013

1 answer

628 views

[Solved] IsEnabled not updating?

I have a toolbar with a button that executes a command. When the command is executed, I set a property from code behind:
SetValue(IsRunningProperty, true);

A worker thread does some work, and when completed the property is updated again:
SetValue(IsRunningProperty, false);

The toolbar binds to this property as follows:
<telerik:RadButton Margin="2" Command="{StaticResource Commands.Run}" IsEnabled="{Binding IsRunning, Converter={StaticResource InverseBooleanConverter}}">
<Image Stretch="None" Source="..." />
</telerik:RadButton>

This works as long as the toolbar is not focused. If I press the button and wait for my worker to complete, the button will remain disabled until I click in my RadDiagram.

Why isn't the toolbar updating immediately?

UPDATE: Ok, it seems this is caused by a call to someOtherWindow.Focus(). Still, why doesn't the toolbar update itself?

ToolBar

answered on 10 Apr 2013

3 answers

170 views

DragDropBehavior not bindable, should inherit from FrameworkElement

I am trying to create a universal Behavior for my application for DragNDrop using your infrastructure.

I would like to bind an items datacontext to a property of my DragDropBehavior but your abstract class inherits from DependencyObject instead of FrameworkElement so it doesn't work.

Can you change this class:
public abstract class DragDropBehavior<TState> : DependencyObject, IDragDropBehavior<TState> where TState : DragDropState

To this in the future:
public abstract class DragDropBehavior<TState> : FrameworkElement, IDragDropBehavior<TState> where TState : DragDropState

DragAndDrop

answered on 10 Apr 2013

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