Questions on UI for WPF Forum

1 answer

53 views

Hi friends,

My ItemsSource contains only 1 element. Is there a way to make carousel show it in the center? Because I'm having to click in nav buttons to make this element appears...

Carousel

answered on 04 Apr 2011

3 answers

183 views

RadialGauge Needle not drawn in the correct position

Good afternoon,

There seems to be a problem with the positioning of the RadialGauge needle.
I have two buttons, one to decrement and another to increment the "value" of the needle. As the needle increments from "value" = 1 the positioning doesn't align correctly with gauge ticks.

For example:

Value = 1 - Displays 1
Value = 2 - Displays 1.9
Value = 3 - Displays 2.8
Value = 4 - Displays 3.75
....
Value = 8 - Displays 7.5

Here is my XAML:

<telerik:RadialGauge x:Name="radialGauge" Grid.Row="1"

Width="300"

Height="300">

<telerik:RadialScale Min="1"

Max="12">

<telerik:IndicatorList>

<telerik:Needle x:Name="needle"

Value="1"

IsAnimated="True"

Duration="0:0:2" />

</telerik:IndicatorList>

</telerik:RadialScale>

</telerik:RadialGauge>

Is there a fix for this?

*** I have the latest version of the WPF RadControls (2011_1_0315)

Thank you for your time,

Rob

Gauges

answered on 03 Apr 2011

2 answers

94 views

Changing series definition with MVVM

I have a chart that I want to be able to change between stick and candlestick. My app is MVVM based, so how would I do that? Do I need to create two separate charts, one based on stick and one based on candlestick and then just display the one I want?

Chart

answered on 01 Apr 2011

1 answer

104 views

Resize rows?

Is it possible for the user to resize rows?

GridView

answered on 01 Apr 2011

2 answers

200 views

Bug with Virtualization and ContextMenu

Hello,
I got a RadTreeView with 1000 items and using Virtualization.
Its definition is:

<telerik:RadTreeView x:Name="MyTree" ContextMenu="{StaticResource ResourceKey=contextManager}" IsEditable="true" Grid.Row="1" ItemsSource="{Binding Path=Devices.Children}" IsLineEnabled="True" SelectionMode="Extended" ItemTemplateSelector="{StaticResource ItemSelector}" ItemContainerStyleSelector="{StaticResource ItemContainerSelector}" IsVirtualizing="true" IsDragDropEnabled="True" IsDragPreviewEnabled="True" IsDragTooltipEnabled="True" IsDropPreviewLineEnabled="True" PreviewDragEnded="TreeView_DragEnded"/>

I'm using a style to set all RadTreeViewItem a context menu like that:

<Style x:Key="DeviceContainerStyle" TargetType="telerik:RadTreeViewItem">

<Setter Property="IsSelected" Value="{Binding IsSelected,Mode=TwoWay}"/>

<Setter Property="IsEditable" Value="False"/>

<Setter Property="IsExpanded" Value="{Binding IsExpanded,Mode=TwoWay}"/>

<Setter Property="telerik:RadContextMenu.ContextMenu" Value="{StaticResource ResourceKey=contextDevice}" />

</Style>

contextDevice is a really simple context menu. with one RadMenuItem in it.

The problem: when scrolling to the bottom of the list and right click an item, the context menu opens fine. But when i scroll back to top of the tree, and right click an item, i get the following exception:

Message: Value cannot be null. Parameter name: format

Stack Trace: at System.String.Format(IFormatProvider provider, String format, Object[] args)

at Telerik.Windows.Controls.SRLoader`1.GetString(String defaultNamespace, String name, Object[] args) in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Core\Controls\SRLoader.cs:line 78

at Telerik.Windows.Controls.SR.GetString(String name, Object[] args) in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Core\Controls\SR.cs:line 33

at Telerik.Windows.Controls.RadContextMenu.CreateRootPopup(Popup popup, UIElement child) in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Navigation\Menu\ContextMenu.cs:line 767

at Telerik.Windows.Controls.RadContextMenu.HookupRootPopup() in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Navigation\Menu\ContextMenu.cs:line 1168

at Telerik.Windows.Controls.RadContextMenu.OnIsOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Navigation\Menu\ContextMenu.cs:line 658

at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)

at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)

at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)

at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)

at Telerik.Windows.Controls.RadContextMenu.set_IsOpen(Boolean value) in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Navigation\Menu\ContextMenu.cs:line 318

at Telerik.Windows.Controls.RadContextMenu.TriggerEventFired() in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Navigation\Menu\ContextMenu.cs:line 899

at Telerik.Windows.Controls.RadContextMenu.OnEventTriggered(Object sender, EventArgs e) in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Navigation\Menu\ContextMenu.cs:line 864

at Telerik.Windows.Controls.RadContextMenu.RoutedEventFired(Object sender, RoutedEventArgs e) in c:\Builds\WPF_Scrum\Current_HotFix\Sources\Development\Controls\Navigation\Menu\ContextMenu.cs:line 1059

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)

at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)

at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)

at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)

at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)

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.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)

at System.Windows.Input.InputManager.ProcessStagingArea()

at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)

at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)

at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)

at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)

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)

Please note that when i set IsVirtualizing=false the problem is solved ! but i get really bad memory consume

Thanks for your help.
Miky.

TreeView

answered on 01 Apr 2011

9 answers

188 views

Docking inside Dockin

Hi,

I have got question about Docking control for WPF. I am using Docking inside Docking (AllowUnsafeMode set to true). And in the inside Docking I add RadPane,and if I Pinned this RadPane the pinned window is in outsie Dockside, why ? Is this a bug or is this in purpose ?

Regards

Docking

answered on 01 Apr 2011

1 answer

132 views

How to Lock Selection

In a master / detail scenario and need to know the best way to lock the selected item/row in the grid. I tried isenabled and that doesn't seem to do the trick. Ideally I'd like to bind a bool from the vm.

GridView

answered on 01 Apr 2011

1 answer

119 views

Source Code - WPF Controls - .NET 4.0

Hi. I downloaded the soure control for the WPF Controls and noticed that its the .NET 3.5 Framework version. Is there a .NET 4.0 version of the code available for download. Thanks.

Randy

General Discussions

answered on 01 Apr 2011

3 answers

1.2K+ views

Group of Toggle Buttons

Hi,

How i can implement group of Toggle Button, one button will be active at a time.

Please suggest/provide sample code.

Regards, Sreeju

Buttons

answered on 31 Mar 2011

1 answer

75 views

Scrolling problem

Good morning
When I edit a row in TreeListView and confirm the change via Enter,
the TreeListView always scroll to the first row.
Is there a way to disable this behaviour (aka maintain the edited row into view)?
Thank in advance
Marco

TreeListView

answered on 31 Mar 2011