Questions on UI for WPF Forum

4 answers

369 views

Hello,

I'm using telerik 2012 for WPF (Telerik.Windows.Controls.GridView.dll file version is 2012.3.1129.40).

I've defined grouping for a RadGridView, and set the AutoExpandGroups property to True.

When the Grid is opened, the groups are expanded, yet an empty area appears below the grid, and disappears only after I collapse and expand again one of the groups.

Please see the attached screenshot.

Thanks,
Guy E.

GridView

answered on 27 Jan 2015

4 answers

361 views

Runtime Theme Switching

I am attemtping to have my application switch from a default theme of Visual Studio 2013 Dark to the Windows 8 Touch during runtime. The Visual Studio theme applies correctly but when I attempt to switch the theme dynamically to the Touch theme I get the following error: Cannot find resource named 'ButtonIconForeground_MouseOver'. Resource names are case sensitive. I understand what the error is but I don't understand why it is happening. I am using the following Telerik DLLs:

Telerik.Windows.Controls
Telerik.Windows.Controls.Data
Telerik.Windows.Controls.Docking
Telerik.Windows.Controls.Navigation
Telerik.Windows.Controls.Input
Telerik.Windows.Data

This is my code to apply the default Visual Studio 2013 Dark theme:

<Application x:Class="Mantis.Client.App"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:resources="clr-namespace:Mantis.Client.Resources"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">

<Application.Resources>

<ResourceDictionary>

<ResourceDictionary.MergedDictionaries>

<ResourceDictionary Source="/Themes/VisualStudio/System.Windows.xaml" />

<ResourceDictionary Source="/Themes/VisualStudio/Telerik.Windows.Controls.xaml" />

<ResourceDictionary Source="/Themes/VisualStudio/Telerik.Windows.Controls.Data.xaml" />

<ResourceDictionary Source="/Themes/VisualStudio/Telerik.Windows.Controls.Docking.xaml" />

<ResourceDictionary Source="/Themes/VisualStudio/Telerik.Windows.Controls.Input.xaml" />

<ResourceDictionary Source="/Themes/VisualStudio/Telerik.Windows.Controls.Navigation.xaml" />

</ResourceDictionary.MergedDictionaries>

<HierarchicalDataTemplate x:Key="MenuItemTemplate"

ItemsSource="{Binding Items}">

<TextBlock Text="{Binding Text}" />

</HierarchicalDataTemplate>

<Style x:Key="MenuStyle"

TargetType="telerik:RadMenuItem"

BasedOn="{StaticResource RadMenuItemStyle}">

<Setter Property="IsCheckable"

Value="{Binding IsCheckable}" />

<Setter Property="IsChecked"

Value="{Binding IsChecked, Mode=TwoWay}" />

<Setter Property="IsSeparator"

Value="{Binding IsSeparator}" />

<Setter Property="IsEnabled"

Value="{Binding IsEnabled}" />

<Setter Property="StaysOpenOnClick"

Value="{Binding StaysOpenOnClick}" />

<Setter Property="Icon"

Value="{Binding Image}" />

</Style>

</ResourceDictionary>

</Application.Resources>

</Application>

public partial class App : Application

{

private MantisBootstrapper _bootstrapper;

protected override void OnStartup(StartupEventArgs e)

{

Telerik.Windows.Controls.VisualStudio2013Palette.LoadPreset(Telerik.Windows.Controls.VisualStudio2013Palette.ColorVariation.Dark);

base.OnStartup(e);

this._bootstrapper = new MantisBootstrapper();

this._bootstrapper.Run();

}

protected override void OnExit(ExitEventArgs e)

{

this._bootstrapper.Shutdown();

base.OnExit(e);

}

Here is where I apply the Windows 8 Touch theme:

private void RadMenuItem_Click(object sender, Telerik.Windows.RadRoutedEventArgs e)

{

App.Current.Resources.MergedDictionaries.Clear();

App.Current.Resources.MergedDictionaries.Add(new Telerik.Windows.Controls.Windows8TouchResourceDictionary());

App.Current.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("/Themes/Touch/System.Windows.xaml", UriKind.Relative) });

App.Current.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("/Themes/Touch/Telerik.Windows.Controls.xaml", UriKind.Relative) });

App.Current.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("/Themes/Touch/Telerik.Windows.Controls.Data.xaml", UriKind.Relative) });

App.Current.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("/Themes/Touch/Telerik.Windows.Controls.Docking.xaml", UriKind.Relative) });

App.Current.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("/Themes/Touch/Telerik.Windows.Controls.Input.xaml", UriKind.Relative) });

App.Current.Resources.MergedDictionaries.Add(new ResourceDictionary { Source = new Uri("/Themes/Touch/Telerik.Windows.Controls.Navigation.xaml", UriKind.Relative) });

}

General Discussions

answered on 26 Jan 2015

2 answers

177 views

Issue in Copy and Paste Diagram Items

Hi,

Sometimes when copy and paste diagram items, I get error says "An item with the same key has already been added."

Here is the call stack
==========================================================================================

System.ArgumentException was unhandled
HResult=-2147024809
Message=An item with the same key has already been added.
Source=mscorlib
StackTrace:
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at Telerik.Windows.Diagrams.Core.SerializationService.DeserializeItems(SerializationInfo serializationInfo, Boolean makeUnique)
at Telerik.Windows.Controls.Diagrams.DataTransferService.HandleDiagramElementDrop(DataObject dataObject)
at Telerik.Windows.Controls.Diagrams.DataTransferService.HandlePaste(DataObject dataObject, Action`1 action)
at Telerik.Windows.Controls.RadDiagram.Paste()
at Telerik.Windows.Controls.RadDiagram.OnPasteCommandExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
at System.Windows.Input.CommandManager.TranslateInput(IInputElement targetElement, InputEventArgs inputEventArgs)
at System.Windows.UIElement.OnKeyDownThunk(Object sender, KeyEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Interop.HwndKeyboardInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawKeyboardActions actions, Int32 scanCode, Boolean isExtendedKey, Boolean isSystemKey, Int32 virtualKey)
at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled)
at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers)
at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled)
at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.TranslateAndDispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run()

========================================================

Thanks,

Ahmed

Diagram

answered on 26 Jan 2015

2 answers

321 views

Tooltips for RadPropertyGrid Items

We have a RadPropertyGrid with its items being auto-generated.

How can I set Tooltips to the labels and/or to the editors being generated???

Tooltips should be set inside auto-generation

PropertyGrid

answered on 26 Jan 2015

1 answer

99 views

GridView scrolls when tabbing out

If RadGridView has vertical scroll bar and I tab out the scroll viewer scrolls on its own.

I have 1 gridView and 2 buttons, I select a row on gridview and then hit tab, the focus is on the button but the grid automatically scrolls.

<Grid DataContext="{StaticResource MyViewModel}">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<telerik:RadGridView Name="playersGrid"
ItemsSource="{Binding Players}"
AutoGenerateColumns="False">
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Name}" TabStopMode="Skip"/>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Number}" TabStopMode="Skip"/>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Position}" TabStopMode="Skip"/>
<telerik:GridViewDataColumn DataMemberBinding="{Binding Country}" TabStopMode="Skip"/>
</telerik:RadGridView.Columns>
</telerik:RadGridView>

<StackPanel Grid.Row="1" Orientation="Horizontal">
<telerik:RadButton Name="Button1"
Content="ScrollIntoView"
Click="Button1_Click"
Margin="5"
HorizontalAlignment="Left"/>
<telerik:RadButton Name="Button2"
Content="BringIndexIntoView"
Click="Button2_Click"
Margin="5"
HorizontalAlignment="Left"/>
</StackPanel>
</Grid>

GridView

answered on 26 Jan 2015

3 answers

250 views

ChartView null values handling

I am using the newest version of telerik libraries, but on my ChartView controls are null values displayed as 0s so on LineChart lines are there evry time pointing to 0 where null value is avaiulable.

Is this the way it is supposed to work ? DoI have to use old version of Chart (RadChart) to have empty (null) vales properly displayed ?

Cheers,
Robert

ChartView

answered on 26 Jan 2015

9 answers

133 views

Is there no series descriptor to use with RangeSeries?

There are descriptors for Categorical, Scatter, and Polar. What about for RangeSeries?

Thanks - Mitch

ChartView

answered on 26 Jan 2015

3 answers

89 views

TreeListView - cursor always set to arrow - nodragindicator cursor missing

Hi,

I want to use the default drag/no-drag cursors on the RadTreeListView control to keep it consistent with other controls. However I see that RadTreeListView implements OnGiveFeedback event and always sets the cursor to an 'Arrow' and also sets e.Handled to true. Firstly, the cursor here should be set based on DragDropEffects and should not be forced to Arrow. Secondly, e.Handled should not be set to true as one can never add a handler the OnGiveFeedback event which I can use to change the arrow. Attached is a screenshot..

RadTreeListView.cs

private void OnGiveFeedback(object sender, Telerik.Windows.DragDrop.GiveFeedbackEventArgs e)

{

e.SetCursor(Cursors.Arrow);

e.Handled = true;

if (e.Effects != DragDropEffects.None)

return;

this.OnDropImpossible(this.CurrentDragVisual);

}

TreeListView

answered on 24 Jan 2015

5 answers

336 views

Bind to "normal" properties in dynamic object

Hi,

we want to bind a RadGridView to a collection of objects that implement DynamicObject. However, we don't want to bind to the dynamic properties, but only classical properties (e.g. the Name property in the following example).

public class MyDynamicObject : DynamicObject

{

public string Name { get; set; }

public override bool TryGetMember(GetMemberBinder binder, out object result)

{

return base.TryGetMember(binder, out result);

}

public override bool TrySetMember(SetMemberBinder binder, object value)

{

return base.TrySetMember(binder, value);

}

However, the RadGridView only tries to bind to the dynamic members and throws exceptions if the dynamic member is not found. It does not even check if there is a normal property with the same name. This affects not only binding, but also sorting, grouping and filtering.
The typical behavior in WPF (e.g. when using a binding) and C# (when using the dynamic keyword) is to check for normal properties first! This should be the same in the RadGridView.

Alex

GridView