Hi.

I'm using a grid that has row details. There is a plus sign in the left-most column for the user to click on to expand the row. When the user clicks on a cell in the row, the details expand normally and the row is selected. But when the user just clicks on the plus sign, the row is expanded but the row does not get selected. I've tried various ways to programmatically select the row in the RowDetailsVisibilityChanged event but have been unsuccessful.

Also, the showing of the row details when the user clicks on other cells works OK (RowDetailsVisibilityMode = VisibleWhenSelected) but after a while the rows do not expand anymore and the user must click on the plus sign to expand the row. Not sure if the two issues are related.

I'm relatively new to WPF so apologies if I'm overlooking the obvious.

TIA,

John

In our application we want to export hierarchical gridview to PDF format. I have seen a telerik demo with simple grid. It is working fine. But my queries are:
1. Is there any similar way to export hierarchical grids to PDF file.
2. How can we extract child gridview control which is defined as Hierarchical template in the parent Gridview? Please provide me some sample code.

Hello,

I have a tree list view that contains a set of hierarchical data.  I have set up a filter to recreate the observable collection to filter out certain items from the tree.  The initial load works fine and the data is presented.  I can recreate the filter just fine.  As soon as the property changed event fires, I get a null reference exception from the tree list view.  I've tried replacing the data source collection with a new collection and I've tried just removing and adding filtered items back to the collection.  Both result in the exception below.

I Don't have a null item in my dataset - though there are some NULLs in the data itself which is fine when the tree is first loaded.

00000e42  mov         dword ptr [ebp+FFFFF734h],eax  

System.NullReferenceException was unhandled
  Message=Object reference not set to an instance of an object.
  Source=Telerik.Windows.Controls.GridView
  StackTrace:
       at Telerik.Windows.Controls.TreeListView.TreeListViewRow.UpdateIsExpandable() in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\TreeListView\TreeListViewRow.cs:line 307
       at Telerik.Windows.Controls.TreeListView.TreeListViewRow.OnItemsChanged(Object sender, NotifyCollectionChangedEventArgs e) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\TreeListView\TreeListViewRow.cs:line 301
       at Telerik.Windows.Controls.TreeListView.TreeListViewRow.OnItemsCollectionChanged(HierarchicalChildCollectionView oldValue, HierarchicalChildCollectionView newValue) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\TreeListView\TreeListViewRow.cs:line 240
       at Telerik.Windows.Controls.TreeListView.TreeListViewRow.set_Items(HierarchicalChildCollectionView value) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\TreeListView\TreeListViewRow.cs:line 220
       at Telerik.Windows.Controls.RadTreeListView.InitializeHierarchyProperties(GridViewRowItem gridViewRow, Object item) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\TreeListView\RadTreeListView.cs:line 260
       at Telerik.Windows.Controls.GridView.GridViewDataControl.PrepareContainerForItemOverride(DependencyObject element, Object item) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\GridViewDataControl.cs:line 7600
       at Telerik.Windows.Controls.RadTreeListView.PrepareContainerForItemOverride(DependencyObject element, Object item) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\TreeListView\RadTreeListView.cs:line 248
       at Telerik.Windows.Controls.GridView.BaseItemsControl.Telerik.Windows.Controls.GridView.IGeneratorHost.PrepareItemContainer(DependencyObject container, Object item) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\ItemsControl\BaseItemsControl.cs:line 336
       at Telerik.Windows.Controls.GridView.GridViewItemContainerGenerator.System.Windows.Controls.Primitives.IItemContainerGenerator.PrepareItemContainer(DependencyObject container) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\ItemsControl\GridViewItemContainerGenerator.cs:line 237
       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.InsertContainer(Int32 childIndex, UIElement container, Boolean isRecycled) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 2312
       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.InsertNewContainer(Int32 childIndex, UIElement container) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 2206
       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.AddContainerFromGenerator(Int32 childIndex, UIElement child, Boolean newlyRealized) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 2366
       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.GenerateNextChild(IItemContainerGenerator generator, Int32 childIndex) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 1530
       at Telerik.Windows.Controls.GridView.GridViewVirtualizingPanel.MeasureOverride(Size constraint) in c:\TB\105\WPF_Scrum\Release_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewVirtualizingPanel.cs:line 1228
       at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
       at System.Windows.UIElement.Measure(Size availableSize)
       at System.Windows.ContextLayoutManager.UpdateLayout()
       at System.Windows.UIElement.UpdateLayout()
       at System.Windows.Controls.TabItem.OnPreviewGotKeyboardFocus(KeyboardFocusChangedEventArgs e)
       at System.Windows.UIElement.OnPreviewGotKeyboardFocusThunk(Object sender, KeyboardFocusChangedEventArgs e)
       at System.Windows.Input.KeyboardFocusChangedEventArgs.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.KeyboardDevice.TryChangeFocus(DependencyObject newFocus, IKeyboardInputProvider keyboardInputProvider, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
       at System.Windows.Input.KeyboardDevice.Focus(DependencyObject focus, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
       at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)
       at System.Windows.UIElement.Focus()
       at System.Windows.Controls.TabItem.SetFocus()
       at System.Windows.Controls.TabItem.OnMouseLeftButtonDown(MouseButtonEventArgs e)
       at System.Windows.UIElement.OnMouseLeftButtonDownThunk(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.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
       at System.Windows.UIElement.OnMouseDownThunk(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)
       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.Application.RunDispatcher(Object ignore)
       at System.Windows.Application.RunInternal(Window window)
       at System.Windows.Application.Run(Window window)
       at System.Windows.Application.Run()
       at APPLICATION.App.Main() in APPLICATION_PATH\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(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.Threading.ThreadHelper.ThreadStart()
  InnerException: 

How do I use the LastFunction in the AggregateFunctions of a GridViewDataColumn? When I put it in, it only seems to display the string of the underlying datatype of my row, not the value of the column of the last item. Other functions(Sum, min, max) show just fine.

According to the documentation it should work. http://www.telerik.com/help/wpf/gridview-columns-aggregate-functions.html

Hi guys,

I started working with the PersistanceFramework to save the settings of the RadGridView.
To check the items, we have inserted a GridViewSelectColumn on 1st position.

When we save the configuration and load it again, the checkbox in the header of the SelectColumn isn't a checkbox anymore.

In the header is now: System.Windows.Controls.CheckBox Content: IsChecked:False

Hope you can rebuild this "bug"?

Regards,

David

Is there a way to have the content of an expander fill all available space and push any expanders to the bottom or top of the window.  So far I tried using StackPanels, DockPanels, Grids but I just have not been able to get the desired effect.  Any recommendations would be appreciated.

behavior example,

All Collapsed
===================
Expander1 - {collapsed}
Expander2 - {collapsed}
Expander3 - {collapsed}
.
.
. { blank}
.
.
------------------------------


Expander 1 Expanded
===================
Expander1 - {expanded}
.
.
. { expander content}
.
.
Expander2 - {collapsed}
Expander3 - {collapsed}
------------------------------

Expander 2 Expanded
===================
Expander1 - {collapsed}
Expander2 - {expanded}
.
.
. {expander content}
.
.
Expander3 - {collapsed}
------------------------------

Expander 3 Expanded
===================
Expander1 - {collapsed}
Expander2 - {collapsed}
Expander3 - {expanded}
.
.
. {expander content}
.
.
------------------------------


All Expanded
===================
Expander1 - {expanded}
.
. {expander content}
.
Expander2 - {expanded}
.
. {expander content}
.
Expander3 - {expanded}
.
. {expander content}
.
------------------------------

Hello there,
            Can anyone help me out here. I have used Tiles View Control and I Liked it very much.  I Simply loved it. I have used it and much of it is working is alright except the drag and drop even though all the Tiles are at restored state. I have checked the isItemDraggingEnabled property to true. Please help me out here what should I do to enable the drag and drop feature of tiles.

1 curious question. When 1 Tile is Maximized and the other Tiles are Restored. Does these restored Tiles Support drag and drop like in the modern internet Browsers?

Thank You

How to add my main windows Metro Titlebar with telerik controls.
Thanks all telerik team.

Hi Telerik Team,

I have an application which displays multiple gridviews and multiple charts. and I need to enable user to export the whole data in grid and charts to one excel file.
I know that RadChart and RadGridView have export function, but it's only limited to one excel file target per object.
Is there any workaround to achieve this?

Thanks,
James