Questions on UI for WPF Forum

1 answer

133 views

Checkbox states

Hello, Telerik team!
I'm stumbled into some little UI inconveniences using RadGridView.
I use checkbox column bound to IsSelected property of my Model.
Item source of RadGRidView is of ObservableCollection<Model> class:

<controls3:RadGridView x:Name="Sports" ShowGroupPanel="False" ItemsSource="{Binding AllSports}"

AutoGenerateColumns="False" RowIndicatorVisibility="Collapsed" CanUserSelect="False" ScrollViewer.HorizontalScrollBarVisibility="Disabled">

<controls3:RadGridView.Columns>

<controls3:GridViewCheckBoxColumn DataMemberBinding="{Binding IsSelected}" Header="Chosen" ForceCursor="True" IsThreeState="False" />

<controls3:GridViewDataColumn Width="239" DataMemberBinding="{Binding name}" Header="Name"/>

</controls3:RadGridView.Columns>

</controls3:RadGridView>

when I want to check the checkbox, it takes three clicks to make it checked: first accordin row is selected, second click select a cell, and only on third click the box is checked.
I understand that it should be a lame problem, but nevertheless, it would be very kinf of you if you help me!

GridView

answered on 08 Apr 2013

3 answers

859 views

How to bind to SelectedItems

Hello,

I am trying to two-way bind to a List<Stores> in order to pre-populate the auto suggest box and get its updated values. I tried using the following:

<telerik:RadAutoCompleteBox Name="radAutoCompleteBox1" Grid.Column="2" Grid.Row="0"

DataContext="{Binding DetailViewModel}"

SelectionMode="Multiple"

WatermarkContent="Type a name"

TextSearchMode="Contains"

ItemsSource="{Binding BookstoreLookup}"

DisplayMemberPath="ShortName"

TextSearchPath="ShortName"

AutoCompleteMode="Suggest"

SelectedItems="{Binding SelectedNoticeItem.Bookstores, Mode=TwoWay}"

/>

However, I keep getting "Collection was of a fixed size" exceptions. I've tried no Mode too.

BookstoreLookup is an ObservableCollection<BookstoreModel> and SelectedNoticeItem.Bookstores is a List<BookstoreModel> (I also tried ObservableCollection).

Thanks for your help.

John

AutoCompleteBox

answered on 08 Apr 2013

4 answers

112 views

Q1 2013: problem with ColumnSortDescriptor

Hello,
I have a problem with the Q1 2013 version that was not in the previous, Q3 2012 SP1. I'm using Gridview with a GroupDescriptor
, my gridview is in a telerik tabItem, when i switch from tabitem, and I'm back on my grid I have this error :

Column cannot be null

Nom du paramètre : newColumn

Stack Trace :

à Telerik.Windows.Controls.GridView.ColumnGroupDescriptor.OnColumnChanged(GridViewColumn oldColumn, GridViewColumn newColumn)

à Telerik.Windows.Controls.GridView.ColumnGroupDescriptor.OnColumnPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)

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

à System.Windows.Freezable.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

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

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

à System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)

à System.Windows.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)

à System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)

à System.Windows.Data.BindingExpression.ScheduleTransfer(Boolean isASubPropertyChange)

à MS.Internal.Data.ClrBindingWorker.NewValueAvailable(Boolean dependencySourcesChanged, Boolean initialValue, Boolean isASubPropertyChange)

à MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)

à MS.Internal.Data.ClrBindingWorker.OnSourcePropertyChanged(Object o, String propName)

à MS.Internal.Data.PropertyPathWorker.OnPropertyChanged(Object sender, PropertyChangedEventArgs e)

à System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)

à System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(Object sender, PropertyChangedEventArgs args)

à System.Collections.ObjectModel.ObservableCollection`1.OnPropertyChanged(PropertyChangedEventArgs e)

à System.Collections.ObjectModel.ObservableCollection`1.ClearItems()

à Telerik.Windows.Controls.GridViewColumnCollectionInternal.ClearItems()

à System.Collections.ObjectModel.Collection`1.Clear()

à Telerik.Windows.Controls.GridView.GridViewDataControl.TotalColumnRefresh()

à Telerik.Windows.Controls.GridView.GridViewDataControl.Grid_Loaded(Object sender, RoutedEventArgs e)

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

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

à System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

à System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)

à System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)

à System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)

à MS.Internal.LoadedOrUnloadedOperation.DoWork()

à System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()

à System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()

à System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)

à System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)

à System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

à MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

à System.Windows.Threading.DispatcherOperation.InvokeImpl()

à System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)

à System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)

à System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

à System.Windows.Threading.DispatcherOperation.Invoke()

à System.Windows.Threading.Dispatcher.ProcessQueue()

à System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

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

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

à System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

à MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

à System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)

à MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)

à MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)

à System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)

à System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)

à System.Windows.Threading.Dispatcher.Run()

à System.Windows.Application.RunDispatcher(Object ignore)

à System.Windows.Application.RunInternal(Window window)

à System.Windows.Application.Run(Window window)

à System.Windows.Application.Run()

à BaseCamp.App.Main() dans d:\ManagerEntrepriseVS\BaseCamp\BaseCamp\obj\Debug\App.g.cs:ligne 0

XAML Code :

<telerik:RadTabItem Header="{Binding Resource.PerSupplier}">

<telerik:RadGridView x:Name="QuotationDashBoardGrid" ShowGroupPanel="true" AutoGenerateColumns="False"

ItemsSource="{Binding LstQuotationDashBoard, Mode=TwoWay}" SelectedItem="{Binding SelectedQuotation, Mode=TwoWay}"

IsReadOnly="True" >

<telerik:RadGridView.GroupDescriptors>

<telerik:ColumnGroupDescriptor Column="{Binding Columns[SupplierColumn],ElementName=QuotationDashBoardGrid}" SortDirection="Ascending" />

</telerik:RadGridView.GroupDescriptors>

<telerik:RadGridView.Columns>

<telerik:GridViewImageColumn ImageHeight="17" ImageWidth="17" DataMemberBinding="{Binding DiscountIndication,Converter={StaticResource QuotationToUri}}" Header="" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding CodeTarif}" Header="{Binding Resource.DiscountCode}" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding FamilleLibelle}" Header="{Binding Resource.DiscountLabel}" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding DisplayDiscount}" Header="{Binding Resource.Discount}" />

<telerik:GridViewDataColumn Header="{Binding Resource.Note}" DataMemberBinding="{Binding Note}"/>

<telerik:GridViewDataColumn DataMemberBinding="{Binding DiscountDealName}" Header="{Binding Resource.DiscountDealName}" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding OuContractedName}" Header="{Binding Resource.OU}" />

<telerik:GridViewDataColumn DataMemberBinding="{Binding RootSupplierName}" UniqueName="SupplierColumn" Header="{Binding Resource.Supplier}" />

</telerik:RadGridView.Columns>

</telerik:RadGridView>

</telerik:RadTabItem>

Without the GroupDescriptor, there is no problem.

Thanks in advance

GridView

answered on 08 Apr 2013

1 answer

93 views

Manipulate EditorTemplate

I'm trying to customize my property grid. Is there a way to access the EditorTemplate at runtime in code behind?

1) for strings that use text editors, I want to access the text changed event, so I can validate entries as the user types instead of waiting until the field loses focus.

1) to customize the editor's background color and border at runtime.

PropertyGrid

answered on 08 Apr 2013

0 answers

139 views

GridViewHyperlinkColumn->HyperlinkButton

Hello,

I have a problem with HyperlinkButton and his static method: OnRequestNavigate.

If my URI contains absolute path to file with polish diacritic characters, Process.Start throws Win32Exception (NativeErrorCode: 2).

Example file path:

@”C:\zażółć gęsią jaźń.xlsx”

After change this line:

Process.Start(new ProcessStartInfo(e.Uri.AbsoluteUri));

to:

Process.Start(new ProcessStartInfo(e.Uri.LocalPath));

in my case everything looks perfectly.
It's possible to change URI handling logic in this method?

Cheers,
Szymon

GridView

asked on 07 Apr 2013

2 answers

95 views

Filename scenario?

Is there any way to restrict the RACB to a single item? In other words, change its behavior so that it appears like a textbox without boxing selected items? I'm trying to use it to autocomplete a filename from the file system as the user types in a path. It makes no sense that, when the user hits tab or enter, the filename gets boxed up with a little delete button.

AutoCompleteBox

answered on 06 Apr 2013

5 answers

998 views

Draw horizontal line in chart?

Hi,
I'm using the line-chart for displaying complex data. Now, i want to put the ranges (upper and lower limit in which all data is supposed to occur) in the charts. These limits should be horizontal lines in the background (simple red lines without any points). How can i do this?
Thx

Chart

answered on 05 Apr 2013

4 answers

88 views

RadDiagram automatic Design view switching

Is there any way to stop Visual Studio from switching to Design view every time a change is made to the XAML of a RadDiagram?!? So annoying!

Diagram

answered on 05 Apr 2013

4 answers

102 views

RadEnumEditor Not Working as Intended?

I'm evaluating the radcontrols package and have had some problems with the RadPropertyGrid with a FlagEnumEditor. I followed the documentation here: (http://www.telerik.com/help/wpf/radpropertygrid-radenumeditor.html). When I run the project and click on the enum field, the FlagEnumEditor seems to be broken. I can't just click on an option, I need to click and press spacebar. And it also doesn't let go of the focus. If I click anywhere else on the form, even the close button, the editor just opens and closes like I'm clicking on it. I have to stop the executable to exit the program. Am I just not setting it up properly, or is this a bug?

Code I used is below: Image is attached.

Class MainWindow

Public Sub New()

' This call is required by the designer.

InitializeComponent()

' Add any initialization after the InitializeComponent() call.

RadPropertyGrid1.Item = New Employee

End Sub

End Class

Class Employee

Public Property Name As String

Public Property Position As PositionType

<Flags()> _

Public Enum PositionType As Integer

All = -1

None = 0

Engineer = 1

Sales = 2

Marketing = 4

Management = 8

End Enum

End Class

PropertyGrid

answered on 05 Apr 2013

16 answers

782 views

RadTileView and Binding

Since it is not clearly stated anywhere else, I've thought Id help another soul, and give an example how to easily use RadTileView with data binding. RadTileView implements ItemsControl and as such can be treated as one. So the code below is completely valid:

    
            <telerikNavigation:RadTileView ItemsSource="{Binding Items}"> 
        
                        <telerikNavigation:RadTileView.ItemTemplate> 
        
                            <DataTemplate> 
        
                                <TextBlock Text="{Binding Name}" Style="{StaticResource HeaderTitle}"/> 
        
                            </DataTemplate> 
        
                        </telerikNavigation:RadTileView.ItemTemplate> 
        
                        <telerikNavigation:RadTileView.ContentTemplate> 
        
                            <DataTemplate> 
        
                                <telerik:RadFluidContentControl telerikAnimation:AnimationManager.IsAnimationEnabled="True"  
        
                                                            SmallToNormalThreshold="291, 130" 
        
                                                            NormalToSmallThreshold="291, 130" 
        
                                                            NormalToLargeThreshold="730, 350" 
        
                                                            LargeToNormalThreshold="730, 350"> 
        
                                    <telerik:RadFluidContentControl.SmallContent> 
        
                                        <Border Width="193" Height="30"> 
        
                                            <TextBlock Text="Small Content" Style="{StaticResource SmallBox}"/> 
        
                                        </Border> 
        
                                    </telerik:RadFluidContentControl.SmallContent> 
        
                                    <telerik:RadFluidContentControl.Content> 
        
                                        <Border Width="279" Height="130"> 
        
                                            <TextBlock Text="Content" Style="{StaticResource SmallBox}"/> 
        
                                        </Border> 
        
                                    </telerik:RadFluidContentControl.Content> 
        
                                    <telerik:RadFluidContentControl.LargeContent> 
        
                                        <Border Width="730" Height="350"> 
        
                                            <TextBlock Text="Large Content" Style="{StaticResource SmallBox}"/> 
        
                                        </Border> 
        
                                    </telerik:RadFluidContentControl.LargeContent> 
        
                                </telerik:RadFluidContentControl> 
        
                            </DataTemplate> 
        
                        </telerikNavigation:RadTileView.ContentTemplate> 
        
            </telerikNavigation:RadTileView>

TileView

answered on 05 Apr 2013