Hi,

Our application recently moved to Win 7 64 Bit environment;  We are using telerik controls version 2011.2.712.35.
This error only occurs when there is an automation program recording the program. We are getting below exception causing application to crash. Any help with this error would be greatly appreciated.



00000021    12.90117836    [3220] Exception Source: PresentationCore     
00000022    12.90123844    [3220] Exception Message: Recursive call to Automation Peer API is not valid.     
00000023    12.90127945    [3220] Exception StackTrace:    
00000024    12.94501019    [3220]    at System.Windows.Automation.Peers.AutomationPeer.GetChildren()      
00000025    12.94511509    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000026    12.94518375    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000027    12.94525433    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000028    12.94532013    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000029    12.94538403    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000030    12.94546223    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000031    12.94552708    [3220]    at System.Windows.Automation.Peers.AutomationPeer.ValidateConnected(AutomationPeer connectedPeer)      
00000032    12.94559765    [3220]    at MS.Internal.Automation.ElementProxy.StaticWrap(AutomationPeer peer, AutomationPeer referencePeer)      
00000033    12.94566154    [3220]    at System.Windows.Automation.Peers.AutomationPeer.UpdateChildrenInternal(Int32 invalidateLimit)      
00000034    12.94572735    [3220]    at Telerik.Windows.Controls.RadTabControlAutomationPeer.GetChildrenCore()      
00000035    12.94579411    [3220]    at System.Windows.Automation.Peers.AutomationPeer.EnsureChildren()      
00000036    12.94585800    [3220]    at System.Windows.Automation.Peers.AutomationPeer.GetChildren()      
00000037    12.94592571    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000038    12.94598866    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000039    12.94605255    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000040    12.94611740    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000041    12.94618225    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000042    12.94624615    [3220]    at System.Windows.Automation.Peers.AutomationPeer.isDescendantOf(AutomationPeer parent)      
00000043    12.94631290    [3220]    at System.Windows.Automation.Peers.AutomationPeer.ValidateConnected(AutomationPeer connectedPeer)      
00000044    12.94637871    [3220]    at System.Windows.Automation.Peers.AutomationPeer.RaiseFocusChangedEventHelper(IInputElement newFocus)


Thanks,
Piyush

Hello.
I need to load large data as RadListBoxItems with template like.
My code:

Why ShowGroupPanel does't work in TreeListView?

Hi,

I am looking at implementing a automatic mindmap diagram layout in order to enforce the position of the items dropped as well as update the layout whenever a branch is expanded or collapsed. The basic behavior I am looking for is similar to the one provided as a sample with the mindmap layout sample. One of the tricky part is to update the existing item's position when the user expands a node in order to avoid items overlap. Do you recommand a particular approach in this area. XMind does a pretty good job in this area and this is the kind of behavior I am trying to implement.

Rgds

Robert

Hi,
We are creating columns dynamically. There are a few datetime columns where we set the datatype as DateTime and CellEditTemplate as below.

 dataColumn.DataType = (typeof(DateTime?));
            dataColumn.DataFormatString = "{0:dd-MMM-yyyy}";
            dataColumn.TextAlignment = TextAlignment.Right;
            dataColumn.CellEditTemplate = GetDatePickerTemplate(dataColumn);
        }

        private static DataTemplate GetDatePickerTemplate(GridViewDataColumn column)
        {
            var fef = new FrameworkElementFactory(typeof(FormatedRadDatePicker));
          ................

The issue is when you sort the grid with this datetime column and try to edit any value in this column the application crashes with below error:

 Dispatcher UnHandled Exception: System.ArgumentException: Object must be of type DateTime.
   at System.DateTime.CompareTo(Object value)
   at Telerik.Windows.Data.FunctionComparer.Compare(Object x, Object y)
   at Telerik.Windows.Data.ListExtensions.BinarySearch[T](IList`1 items, T value, Func`3 compareFunc)
   at Telerik.Windows.Data.KeyedCollection.IndexOf(Object value)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.RefreshAlternation(GridViewDataControl parentGrid, GridViewRow gridViewRow, Object dataItem)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.RealizeRows(Int32 startIndex, Int32 endIndex, Double& verticalOffset, HashSet`1& realizedRows)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.FlatLayoutStrategy.MeasureOverride(Size availableSize)
   at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size availableSize)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)...........

To me it looks like after the cell edit is over grid tries to put the newly edited data to its rightful place based on sortdescriptor. Probably it fetches the data from DateTimeTextProperty as string type and is not able to compare with DateTime values of other cells....

Hello,
        I can add secondary y-axis to my chart.Currently the chart has secondary Y-axis equals to the number of series aligned to that axis.
But our requirement is to have only one secondary Y axis should be configured to the all the series which have  aligned to that secondary Y axis.In short, I would like to have only one secondary Y-axis to right for multiple series and it should configure scale automatically on that axis according to series values. Just like we have primary vertical  Y  on Left axis  which scales automatically for any multiple number of series.
Is it possible to assign the same primary Vertical Y  on Right axis for any number of series?
I have gone through the documentation of shared vertical axis here http://www.telerik.com/help/wpf/radchartview-axes-multipleaxes.html
but we have dynamic multiple series and we are adding series to the chart dynamically.So how do i set the secondary vertical axis?.Currently I have set it to for every series and that's why multiple vertical axes are getting added.   
 
Could you please help me to resolve this issue if it is possible to implement.
Thank You in Advance  

Hello.

I have a problem with columns in grid. I would like to have columns with the same width and this width should not depend on the content of the columns.

Here is my code:

    <Grid Margin="5" >
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>

            <telerik:RadTreeView Margin="5,0,5,0" Grid.Column="0" 
                                 ItemsSource="{Binding TreeView0}" />
            <telerik:RadTreeView Margin="5,0,5,0" Grid.Column="1" 
                                 ItemsSource="{Binding TreeView1}" />
            <telerik:RadTreeView Margin="5,0,5,0" Grid.Column="2" 
                                 ItemsSource="{Binding TreeView2}" />
            <telerik:RadTreeView Margin="5,0,5,0" Grid.Column="3" 
                                 ItemsSource="{Binding TreeView3}" />
    </Grid>

When I am expanding tree in RadTreeView the column changes it's width and other columns changes respectively. But I would like to have four columns with width = 1/4 of grid's width. RadTreeView has its own ScrollBar for horizontal scrolling.

Is there any property on RadTreeView that stops it from growing horizontally? I tried to enable horizontal scrollbar but it didn't helped.

Hello,

I want RadAutoCompleteBox to display the vertical scroll bar and I'm using ScrollViewer.VerticalScrollBarVisibility="Auto", but it's not displaying. What am I missing? Please advise.

Thanks,
Brew

Hello! I'm wondering If I can change the size of the point in caret position .

This point appears only when I touch the screen but it's difficult to select that point to change the selection with the fingers.

Thanks for your help.

Here is the image of that point.

Hello,,,
I'm new to the Telerik components and we are having some difficulties because do not know them well, but I know I will receive help.
The thing is, I've had reading the help, but I could not see a way to add a filter feature automatic, I know you have the fields above each column, but the filter is only done after hit enter or loses focu but we need a functionality that when typing the RadGridView already go with updating the information entered.

Please if possible add a sample Demo here to see and we can apply in our project.

graciously
André