Questions on UI for WPF Forum

1 answer

90 views

Detect when row is added in a filtered grid

I have a grid with filtering applied on various columns. I want to alert the user whenever a new row is added to the grid, but I can't just observe the Items.CollectionChanged event, as many of these rows won't necessarily be displayed due to the active filtering. I only want to alert when a row has been added and is viewable in the grid (even if it's currently out of scroll view).

Is there an event that I can use, or method that I can check if a row is filtered or not?

Thanks.

GridView

answered on 31 May 2013

1 answer

148 views

ReadOnlyTemplate+CommandButtonsVisibility

Hello,
Im using the RadDataForm Control together with the RadGrid Control. They both are based on the same collection of type
QueryableCollectionView. The objects in the collection are class based objects, the class implements IEditableObject, INotifyPropertyChanged,IDataErrorInfo intrrfaces. My problem is that I want to hide the Commit and the Cancel button but only when
RadDataForm is in ReadOnlyMode, is this possible do this in other way than implementing my own buttons?

<telerik:RadDataForm.ReadOnlyTemplate>

<DataTemplate>

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="Auto" />

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="Auto"/>

</Grid.ColumnDefinitions>

<Label Grid.Row="0" Grid.Column="0" Width="40" Content="Key" IsTabStop="False" />

<Label Grid.Row="1" Grid.Column="0" Width="40" Content="Value" IsTabStop="False"/>

<TextBox Grid.Row="0" Grid.Column="1" Width="170" Height="23" Foreground="Black" Text="{Binding Key}" IsTabStop="False" IsEnabled="False" TextWrapping="Wrap" IsReadOnly="True" />

<TextBox Grid.Row="1" Grid.Column="1" Width="170" Height="23" Foreground="Black" Text="{Binding Value}" IsTabStop="False" TextWrapping="Wrap" IsEnabled="False" IsReadOnly="True" />

</Grid>

</DataTemplate>

</telerik:RadDataForm.ReadOnlyTemplate>

Also is it possible to scroll to the new added row of the grid when Im adding it using RadDataForms add button ?

Regards,

DataForm

answered on 31 May 2013

1 answer

97 views

Grid view columns reordering

Hi,

In my rad grid view i have set CanUserReorderColumns to true.But it doesn't work in some situations. Could you please tell us that where to drop the column in order to be dropped.

If i drag a column and drop it in half of the column part then sometimes it is dropped and sometimes it doesn't work.

Also there is one more requirement from our client, they want the reordering of column with some sliding effect like ( EX. in our windows -> go to my computer -> open details view then reorder columns , there is some visual indication of reordering .. see attached image file) .

Looking forward for your reply.

GridView

answered on 31 May 2013

2 answers

522 views

RadRadialGauge in RadTileView's content template causes SyncFlush[ UCEERR_RENDERTHREADFAILURE (Exception from HRESULT: 0x88980406) ]

I am seeing SynFlush issue when I embed RadialGauge inside the RadTileView.ContentTemplate, which is RadFluidContentControl.LargeContent. Pasted the XAML below.

Question:
Is this illegal use of RadialGague? If not, is there a way to get around this issue somehow?

The Failure:
UCEERR_RENDERTHREADFAILURE (Exception from HRESULT: 0x88980406)
at System.Windows.Media.Composition.DUCE.Channel.SyncFlush()

System.Runtime.InteropServices.COMException occurred
HResult=-2003303418
Message=UCEERR_RENDERTHREADFAILURE (Exception from HRESULT: 0x88980406)
Source=PresentationCore
ErrorCode=-2003303418
StackTrace:
at System.Windows.Media.Composition.DUCE.Channel.SyncFlush()
InnerException:
-----------------------------

Scenario:

<UserControl x:Class="TelerikTest.DeviceList"

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:tileview="clr-namespace:Telerik.Windows.Controls.TileView;assembly=Telerik.Windows.Controls.Navigation">

<UserControl.Resources>

<SolidColorBrush x:Key="AccentBrush" Color="White"/>

<Style x:Key="TileItemHeaderStyle" TargetType="tileview:TileViewItemHeader">

<Setter Property="Foreground" Value="#FFFFFF" />

<Setter Property="FontSize" Value="14" />

<Setter Property="FontFamily" Value="Segoe UI" />

</Style>

<Style TargetType="telerik:RadTileViewItem">

<Setter Property="Padding" Value="3" />

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

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

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

<Setter Property="HeaderStyle" Value="{StaticResource TileItemHeaderStyle}" />

</Style>

<Style TargetType="telerik:RadTileView" >

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

<Setter Property="telerik:TileViewPanel.IsVirtualized" Value="True" />

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

<Setter Property="TileStateChangeTrigger" Value="SingleClick" />

<Setter Property="MinimizedColumnWidth" Value="308" />

<Setter Property="MinimizedRowHeight" Value="193" />

<Setter Property="RowHeight" Value="187" />

<Setter Property="ColumnWidth" Value="277" />

<Setter Property="ColumnsCount" Value="4" />

</Style>

<DataTemplate x:Key="contentTemplate">

<telerik:RadFluidContentControl ContentChangeMode="Manual"

State="Normal"

TransitionDuration="0:0:.5">

<telerik:RadFluidContentControl.Content>

<Border Background="Black">

<Grid Margin="20 10">

<StackPanel>

<TextBlock Margin="0 0 0 5"

FontFamily="Segoe UI"

FontSize="24"

FontWeight="Light"

Foreground="#fff"

Text="Duration" />

<TextBlock FontSize="14"

Text="{Binding Duration}" />

<Border Height="2"

Margin="0 5"

/>

<TextBlock Margin="0 0 0 5"

FontFamily="Segoe UI"

FontSize="24"

FontWeight="Light"

Foreground="#fff"

Text="Price" />

<TextBlock FontSize="14"

Text="{Binding Price}" />

</StackPanel>

<!--<Image HorizontalAlignment="Right"

VerticalAlignment="Bottom"

Source="{Binding Icon}"

Stretch="None" />-->

</Grid>

</Border>

</telerik:RadFluidContentControl.Content>

<telerik:RadFluidContentControl.LargeContent>

<Grid>

<Grid.ColumnDefinitions>

<ColumnDefinition Width="*" />

</Grid.ColumnDefinitions>

<telerik:RadRadialGauge x:Name="radialGauge" Height="100" Width="100">

<telerik:RadialScale Name="scale"

LabelRotationMode="None"

IsInteractive="True"

MajorTickOffset="-0.015*"

MiddleTickOffset="-0.015*"

MinorTickOffset="-0.015*">

<telerik:RadialScale.Ranges>

<telerik:GaugeRange x:Name="range1"

Min="0" Max="20"

StartWidth="0.015"

EndWidth="0.015"

Background="#FF1E8D00" />

<telerik:GaugeRange x:Name="range2"

Min="20" Max="80"

StartWidth="0.015"

EndWidth="0.015"

Background="#FF000000" />

<telerik:GaugeRange x:Name="range3"

Min="80" Max="100"

StartWidth="0.015"

EndWidth="0.015"

Background="#FFE50000" />

</telerik:RadialScale.Ranges>

<telerik:RadialScale.Indicators>

<telerik:BarIndicator x:Name="radialBar"

Value="80"

telerik:ScaleObject.Location="Inside"

telerik:ScaleObject.Offset="0.25*" />

<telerik:RadialScaleMarker Name="marker"

IsAnimated="True"

Duration="0:0:1"

telerik:ScaleObject.Offset="-0.015*"

Value="25" />

<telerik:Needle Value="50" />

<telerik:Pinpoint />

</telerik:RadialScale.Indicators>

</telerik:RadialScale>

</telerik:RadRadialGauge>

</Grid>

</telerik:RadFluidContentControl.LargeContent>

</telerik:RadFluidContentControl>

</DataTemplate>

<DataTemplate x:Key="headerTemplate">

<StackPanel Orientation="Horizontal">

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

<TextBlock Text=" Trip" />

</StackPanel>

</DataTemplate>

</UserControl.Resources>

<Grid>

<Grid.RowDefinitions>

<RowDefinition/>

</Grid.RowDefinitions>

<Grid.ColumnDefinitions>

<ColumnDefinition/>

</Grid.ColumnDefinitions>

<telerik:RadTileView Grid.Column="0"

ContentTemplate="{StaticResource contentTemplate}"

IsItemDraggingEnabled="{Binding ElementName=IsItemDraggingEnabledOption,

Path=IsChecked}"

ItemsSource="{Binding Items}"

ItemTemplate="{StaticResource headerTemplate}"

MaximizeMode="{Binding ElementName=MaximizeModeOption,

Path=SelectedItem}"

PreservePositionWhenMaximized="{Binding ElementName=PreservePositionWhenMaximizedOption,

Path=IsChecked}"

TileStateChanged="tileView1_TileStateChanged"

TileStateChangeTrigger="{Binding ElementName=StateChangeOption,

Path=SelectedItem}" />

</Grid>

</UserControl>

Gauges

answered on 31 May 2013

5 answers

221 views

How to change the FirstDayOfweek in TimelineViewDefinition ?

Hello,

I use a RadScheduleView with the 4 differents view (day/week/month/timeline).
All works fine but for the Timeline view I want to show a week.
I have made :
<telerik:TimelineViewDefinition FirstDayOfWeek="Monday" VisibleDays="5" TimerulerMajorTickStringFormat="{}{0:HH:mm}"/>

But the first day visible is today and not Monday. What can I do for start the timeline Monday ?

Best regards,

Eric.

ScheduleView

answered on 31 May 2013

1 answer

166 views

Which property of RadComboBox I can use to close RadComboBox popup?

Hi,

I have modified ControlTemplate of RadCombioBox to display RadGridView. I am facing an issue with this. When I click an item from ComboBox to select it the ComboBox is not collapsing. I want to close the ComboBox popup when use selects an item and selected item should be assign to SelectedValue property of ComboBox. FYI, I have place RadGridView under NonEditableTemplate (inside "PART_Popup" popup).

And also I have tried seting IsDropDownOpen property to false on SelectedItem property but is also not working. When I click outside ComboBox the popup closes but a yellow border displayed around ComboBox.

Hereby I have attached image which helps to understand requirement. Please have a look at it.

Please help to resolve issue.

ComboBox

answered on 31 May 2013

8 answers

392 views

Digit grouping symbol in regional settings

Hello

My regional setting is set to German (Switzerland), which is using an apostrophe " ' " as digit grouping symbol.
In the attached two images you can see, that the correct grouping symbol is shown in case of a label, but in the RadGridView a comma is shown instead. I'm using the latest control for WPF (2012.3.1017.40) on a Windows 7 machine.

Do I have to set the regional settings explicilty somewhere, or what can I do to make sure the correct digit grouping symbol is shown?

Best regards, Jodok

GridView

answered on 31 May 2013

5 answers

573 views

Customize the TrackBall popup menu

Hi,

I'd like to be able to customize the data in the TrackBall popup. I see there's an example of how to customize the header (http://www.telerik.com/help/silverlight/radchartview-features-trackball.html), but I'd like to be able to customize the Value label to say Counts and Category to say Energy. Also I'd like to do use a converter, or some math on the values for the Value and Category. How can this be done?

Thanks!

ChartView

answered on 31 May 2013

2 answers

482 views

How to close autocomplete dropdown manually?

I have a search button and when user press enter, it will start a search.

however, the dropdown list is still be shown when enter is pressed.

how to hide the dropdown when i press enter to perform search?

i knew when i perform a selection, the dropdown list will be closed.

AutoCompleteBox

answered on 31 May 2013

3 answers

160 views

NullReferenceException when adding new ColumnsGroup from the attached behavior

Version: 2013.1.403
StackTrace:

System.NullReferenceException was unhandled

  HResult=-2147467261

  Message=Object reference not set to an instance of an object.

  Source=Telerik.Windows.Controls.GridView

  StackTrace:

       at Telerik.Windows.Controls.GridView.CommonHeaderPresenter.GetColumnCountToRealize(List`1 subHeaders)

       at Telerik.Windows.Controls.GridView.CommonHeaderPresenter.RealizeHeadersAtRow(Int32 row, List`1 subHeaders)

       at Telerik.Windows.Controls.GridView.CommonHeaderPresenter.RealizeHeaders()

       at Telerik.Windows.Controls.GridView.CommonHeaderPresenter.NotifyCellsPropertyChanged(String propertyName, DependencyPropertyChangedEventArgs e)

       at Telerik.Windows.Controls.GridView.GridViewHeaderRow.NotifyPropertyChanged(DependencyObject d, String propertyName, DependencyPropertyChangedEventArgs e, UpdateTarget target)

       at Telerik.Windows.Controls.GridView.GridViewDataControl.NotifyPropertyChanged(DependencyObject d, String propertyName, DependencyPropertyChangedEventArgs e, UpdateTarget target)

       at Telerik.Windows.Controls.GridViewColumnCollectionInternal.CalculateColumnWidths(Object arg)

       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.DispatcherOperation.InvokeImpl()

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

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

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

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

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

       at System.Windows.Threading.Dispatcher.WndProcHook(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)

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

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

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

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

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

       at System.Windows.Application.Run()

       at PlayingTelerik.App.Main() in d:\work\Sandbox\PlayingTelerik\PlayingTelerik\obj\Debug\App.g.cs:line 0

       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

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

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

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

       at System.Threading.ThreadHelper.ThreadStart()

  InnerException:

GridView

answered on 30 May 2013