Hello,
I am using TreeviewList in my WPF appication using MVVM. I want to show all nodes in expanded mode but by default it shows me only parent node. Is there any way to show all nodes (in expanded mode) automatically?

With the WPF Q2 2011 release, the autoscroll for dragging treeview items has stopped working.  I have verified that by modifying your TreeView Drag and Drop example for both Q1 and Q2 releases.  If you give the RadTreeView1 control a Height of 200 ( enabling it to have a scroll bar ) and then drag an item to the bottom of the tree view, it will autoscroll for Q1 release, but does not for the Q2 release.

Please advise.

Troy

I'm using WPF 4.0, v2011.2.712.40.

I have a grid with two columns that have hyperlink controls in the datatemplate so I can launch to another view within my application when a user clicks on the link.  Periodically the hyperlinks do not trigger the command it is bound to.  If I refresh the list that the grid is bound to then the item with the issue will start to work but sometimes other items stop working.  Here is the column definition.  As you can see from the commented parts of the datatemplate I have also tried using a button but have issues there as well.  If I let the button (or radbutton) look like a regular button without styling it everything seems to work better but if I put a style on it to make it look like a link button the memory usage of my app increases dramatically as the grid is scrolled.

Hi,
I am using context menu in my page. I have defined in following way.

<

 

telerik:RadTreeListView x:Name="rtlvPeopleInfo" >

 

 

 

<!--Context Menu-->

 

 

 

<telerik:RadContextMenu.ContextMenu>

 

 

 

<telerik:RadContextMenu x:Name="radPeopleContextMenu" Opened="radPeopleContextMenu_Opened" >

 

 

 

<telerik:RadMenuItem x:Name="rmiAssign_Engineer" Header="Assign Engineer"/>

 

 

 

</telerik:RadContextMenu>

 

 

 

</telerik:RadContextMenu.ContextMenu>

 

 

 

<telerik:RadTreeListView.Columns>

 

 

 

<telerik:GridViewDataColumn Header="Future Hrs" TextAlignment="Right"/>

 

 

 

<telerik:GridViewDataColumn Header="Previous Hrs" TextAlignment="Right"/>

 

 

 

</telerik:RadTreeListView.Columns>

 

 

 

</telerik:RadTreeListView>

Whenever I normally right click on any cell then it opens correctly and that is fine. But my requirement was if there is any unsaved data on page by cell edit, then when user right click on other cell it should show a message that "User changes will be lost, do u want to continue?". If yes then open the context menu as it is. So when there is any change on page then I show a messagebox with above confirmation message. Now if user selects "Yes" then the context menu opens on the top most left corner of the TreeListView, not on the cell right clicked. Please help me how I will open on same position the user mouse clicked, not the topmost left corner.

So the problem arises only when i open the messagebox confirmation.

 

Do you have an example for row visibility ( show/hide ) achieved by utilizing the filtering approach.

I have two buttons for the TreeListView that a user can click that will
- only show first two levels of tree
 - filter out on a column if cell has data.

Thanks

Hello,  I have a WPF application that utilizes the MVVM pattern.  On my view is a RadGridView defined as


Corresponding in my ViewModel I have a property


On the View Model is a timer that refreshes the data every 60 seconds


The tick event and refresh method


worker is a BackgroundWorker that allows me to load data asynchronously


Occasionally in Production users will get a NullReferenceException at some point when the grid is trying to re-draw.  Here is the stack trace.

at Telerik.Windows.Controls.GridView.Automation.GridViewCellAutomationPeer.GetNameCore() in c:\Builds\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Automation\GridViewCellAutomationPeer.cs:line 146
   at System.Windows.Automation.Peers.AutomationPeer.UpdateSubtree()
   at System.Windows.Automation.Peers.AutomationPeer.UpdatePeer(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.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
   at System.Threading.ExecutionContext.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   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.InvokeImpl(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.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
   at System.Windows.Threading.Dispatcher.Run()
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at System.Windows.Application.Run(Window window)
   at PartsFinder.Chimera.App.Main() in d:\TeamCityWork\PARTSFinderSlnProd\Chimera\PartsFinder.Chimera\obj\x86\Prod-Warehouse\App.g.cs:line 50

This exception doesn't happen every time, in fact it is very random.  But the users get annoyed when it happens several times during the day.  Does anyone have any ideas?

Thanks

Hi Telerik,
I want to capture the "close" event when the custom scheduler dialog box is closed below (i.e. clicking on the X button), how can I do so?

Thanks, Cheau

        <ControlTemplate x:Key="EditAppointmentTemplate" TargetType="{x:Type telerik:SchedulerDialog}">           

            <Grid VerticalAlignment="Center" Margin="10">

                <Grid.ColumnDefinitions>

                    <ColumnDefinition Width="150"/>

                    <ColumnDefinition/>

                </Grid.ColumnDefinitions>

                <Label Grid.Column="0" Content="Number of Tap Activity" Height="25"/>

                <telerik:RadNumericUpDown Grid.Column="1"  Height="25" Width="50" NumberDecimalDigits="0" ValueFormat="Numeric" HorizontalAlignment="Left"

                                          Value="{Binding Occurrence.Appointment.TapActivityNum, Mode=TwoWay}" />

            </Grid>

        </ControlTemplate>

 

        <Style x:Key="EditAppointmentStyle" TargetType="telerik:SchedulerDialog">

            <Setter Property="Width" Value="250" />

            <Setter Property="Height" Value="100" />

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

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

            <Setter Property="Template" Value="{StaticResource EditAppointmentTemplate}" />

            <Setter Property="HeaderTemplate">

                <Setter.Value>

                    <DataTemplate>

                        <StackPanel Orientation="Horizontal">

                            <TextBlock Text="Number of Tap Activity" />

                        </StackPanel>

                    </DataTemplate>

                </Setter.Value>

            </Setter>

        </Style>

Hello Telerik Team,

Is it possible to keep the floating panes open (i.e. as is) on the screen when the main window that hosts these panes is minimized?
Currently it minimizes all floating panes. Please let me know.

Regards,
Kumar

Hello,

I am experiencing some annoying effects with the Radchart (however, I don't know if these effects are normal or not).

My user control contains a total of 5 Radcharts, each of them having between 1 and 3 linear series (the total number is 10 series). I am  using a SampleThreshold = 400. For those charts with more than one series I am using a "nested collections" binding schema (as explained in the online documentation).

Each serie has exactly 2880 points that correspond to one point every 30 seconds for an entire day. I make an async call to an WCF service that returns the data for the series. 

The problem is that the charts render in a pretty annoying way. First only some X axis labels are shown, then the series appear but only a piece of them and with an offset respect to their X axis correct position... and so on until the chart is correctly displayed. I am not showing any label or pointmark aside from the X axis and Y axis labels, and animations are disabled. 

I'd like to know if there is any way to prevent the chart to be "pre-painted" in the screen, so that it would only be shown as it is correctly composed. Is there something like a "loading data screen" or similar? 

I am using April 2011 release. 

Thank you in advance, 

Pablo.

Hello,

Due to the particular needs of our project, we want the user to be able to zoom over the chart's X Axis but without showing any scrollbar. We would do it using the MouseLeftButtonDown and Up belonging to the plot area, calculating the data points and setting a new RangeEnd and RangeStart for the ZoomSettings object. 

However, right now it is only possible to set ZoomSettings to None, Scroll or ScrollAndZoom. Is there any workaround so that zoom can be made (as described above) but hidding the ScrollBar? If so, could you please provide any code sample?

Thank you very much, 

Pablo.