Questions on UI for WPF Forum

1 answer

118 views

Resize rows?

Is it possible for the user to resize rows?

GridView

answered on 01 Apr 2011

2 answers

222 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

201 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

150 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

132 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

1.4K+ 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

90 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

1 answer

105 views

Rad Window cannot be implemented

Hi, I am a new guy to WPF and Radcontrols and I created test application to use Rad Window control but It is not working.

xaml code is,

<telerik:RadWindow x:Class="test.Window1"
    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"
    Header="Window1" Height="300" Width="300">
    <Grid>

    </Grid>
</telerik:RadWindow>

I inherited the rad window,

public partial class Window1 : RadWindow

The telerik rad control version is 2010.3.1314.35

Windows XP SP 3

Visual Studio 2008
Version 9.0.30729.1 SP

Microsoft .Net Framework
Version 3.5 SP1

Please help me.

Thank You.

Window

answered on 31 Mar 2011

1 answer

460 views

[Solved] Working with tabindex

Hi.

I'm having some trouble trying to accomplish the following, maybe you can help me.

I have two or more tabs, each of them having several controls (combos, textbox, textblock, grids, etc.). None of this controls have the tabindex setted, the position of the control within the xaml code should be sufficient to ensure the right order.

When the user hits the tab key in the last control of the first tab, I want to focus the first control in the second tab.

Is this possible? Is it possible without setting the tabindex?

Thanks!

Nico

TabControl

answered on 31 Mar 2011

6 answers

272 views

minimized bar area

Hello,

When you shrink the size of the bottom area, all of the titles show up on a single line instead of on their individual lines. Is it possible to begin in this state, where all of the items only show up on the single line instead of many?

Thanks!

OutlookBar

answered on 31 Mar 2011