Hi,

i have a really strange problem with the gridview and i can't figure out what the exact problem ist. my scenario: i have a usercontrol with several other controls, a combobox and a gridview. the gridview contains several columns: text-, checkboxes- and one combobox-column. the deal is when i'm selecting a value in the combobox OUTSIDE the grid, the combobox INSIDE should be updated. which works pretty good - exept for one thing. when i load the data to the grid, change 1 cell in the grid, and then select the combobox outside, i get following exception:
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System.FormatException was unhandled by user code
  Message="GUID muss 32 Ziffern mit 4 Bindestrichen enthalten (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx)."
  Source="System"
  StackTrace:
       bei System.ComponentModel.ReflectPropertyDescriptor.SetValue(Object component, Object value)
       bei Telerik.Windows.Data.ItemPropertyInfoExtensions.SetValue(ItemPropertyInfo itemProperty, Object item, Object value)
       bei Telerik.Windows.Controls.GridView.EditContext.ReturnOldValuesToRow(GridViewColumnCollection columns, Dictionary`2 oldValues, Object dataItem)
       bei Telerik.Windows.Controls.GridView.EditContext.CancelRowEdit(GridViewRow gridViewRow)
       bei Telerik.Windows.Controls.GridView.EditContext.CancelEdit(GridViewEditingUnit editingUnit)
       bei Telerik.Windows.Controls.GridView.GridViewDataControl.CancelEdit(GridViewEditingUnit editingUnit)
       bei Telerik.Windows.Controls.GridView.GridViewDataControl.CancelEdit()
       bei Telerik.Windows.Controls.GridView.GridViewDataControl.ItemsSourceChanged(Boolean sourceChanged)
       bei Telerik.Windows.Controls.GridView.GridViewDataControl.OnItemsSourceChanged(Object oldValue, Object newValue)
       bei Telerik.Windows.Controls.DataControl.OnItemsSourcePropertyChanged(DependencyObject origin, DependencyPropertyChangedEventArgs args)
       bei System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       bei System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
       bei System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
       bei System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)
       bei System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal)
       bei System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
       bei Telerik.Windows.Controls.DataControl.set_ItemsSource(Object value)
       bei Hsg.Baxter.Cpe.BaxterWPFClient.Pages.Subpages.AssayDialog.PlateLayout_Changed(Object sender, SelectionChangedEventArgs e) in C:\Users\kogmon.HS\Desktop\TFS_Baxter\CPE_MAIN\BaxterWPFClient\Pages\Subpages\AssayDialog.xaml.cs:Zeile 1796.
       bei System.Windows.Controls.SelectionChangedEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
       bei System.Windows.Controls.ComboBox.OnSelectionChanged(SelectionChangedEventArgs e)
       bei System.Windows.Controls.Primitives.Selector.InvokeSelectionChanged(List`1 unselectedItems, List`1 selectedItems)
       bei System.Windows.Controls.Primitives.Selector.SelectionChanger.End()
       bei System.Windows.Controls.Primitives.Selector.SelectionChanger.SelectJustThisItem(Object item, Boolean assumeInItemsCollection)
       bei System.Windows.Controls.ComboBox.NotifyComboBoxItemMouseUp(ComboBoxItem comboBoxItem)
       bei System.Windows.Controls.ComboBoxItem.OnMouseLeftButtonUp(MouseButtonEventArgs e)
       bei System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
       bei System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       bei System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
       bei System.Windows.UIElement.CrackMouseButtonEventAndReRaiseEvent(DependencyObject sender, MouseButtonEventArgs e)
       bei System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
       bei System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
       bei System.Windows.Input.InputManager.ProcessStagingArea()
       bei System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       bei System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
       bei System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
       bei System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       bei System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       bei MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       bei MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       bei System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
       bei System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
  InnerException:
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if i first load the data, then select any value from the combobox and change the values in the grid after everything works fine.
i have tried to "delete" the existing itemsource by setting grid.ItemSource = null before rebinding the changed data but this also provides the same exception. any ideas what i can change?
thx in advance

I am binding my chart to a DataTable.  Using the following code in the chart's constructor to display two bar series works:


However, if I replace both instances of DataPointMember.XCategory with DataPointMember.XValue, I get the following error:

InvalidOperationException - The binary operator GreaterThanOrEqual is not defined for the types 'System.Object' and 'System.Double'.

Also if I use just one series on the chart (with DataPointMember.XValue), it works fine. 

I have a business requirement to render on a map control the same data that is displayed in a GridView control.  For example, if the grid is loaded with all of the companies locations in North America, display those locations on the map.  That part is simple.  Where I have a problem is if the user filters the grid to show only US locations, they want the map to show only those locations. 

I can see that the RadGridView.Items class has a private property of CollectionView that contains the collection of the filtered items. if this collectionview were a read-only property I could just use if for my map object.

I would think that reusing the filtered data from a grid for other purposes would not be an entirely rare requirement.

Is there another way to do this that I am missing?

Thanks in advance for any assistance.

Hi,
I have some data with a big interval, for example maximum of my data is 15,962,940,000.00 and my minimum data is 185,400.00, and my other data is between this 2 data.
When I use pie chart for showing that I am getting  Value was either too large or too small for an Int32. error.
this is a part of my stack trace :


can you help me to solve this error.

best regards
A.Mahdavi

Hello,

I downloaded Telerik for asp in september 2007. It was buggy and I finally turn to DevExpress (buggy but better, to my opinion).

Today, I downloaded DevExpress but was not impressed with it (I haven't found the up-down in the demo). I then downloaded Telerik for WPF. Mainly to look at the up-down. Not a big control that is hard to design but to save time and have an idea on what worth Telerik. I downloaded the trial, installed and 5 minutes after accessing the web site and try the demo of it, I found a bug in the control I need. WOW !!!
I tried to report the bug but I can't. It says many sentenses that I can't figure out in wich case I have exactly but I can't report a bug. I didn't buy it and I already downloaded something 3 years ago (is that for that reason ???). Anybody should be able to report a bug. A company that really want to improve their product would beneficiate from the greatest amount of feedbacks.

The bug is that if you click on the left of a previous entry (say you click before 1 in an entry of 12 345.67) you can "Del" delete the "1" but can't delete more. If you modifiy the text, then the delete works fine...
But they don't want to hear about it from me. They blocked me to report it. The first control I tried was buggy and I found the bug in 30 seconds of try. WPF is not new anymore. I don't really want to continue. I just don't trust them at all. Plus, they don't care of what I have found, they don't want to know they have bugs. Probably they also want to hide them to futur buyer (i did'nt try to look for the knowledge base but I suppose it is also inaccessible).

For me its clear, Telerik is not an option.
Eric Ouellet

Hi,
i dont know how to achive mine problem, i got a GridView with two checkboxes Yes and No, when user click Yes, No should be Unchecked and when user clicks No, than Yes should be unchecked.


Also i need to save current row to database when something is clicked (Yes or No, cos default is none) so i need to fire an event.

Last question is how can i select current row on checkbox click ?

When the user presses enter the selection of the radgridview goes to the next row. I don't want this behaviour. Is there a way to prevent this as there is no SelectionChanging event on the radgridview yet?

I have two treeviews, the "A" is an inventory of stuff, and "B" is a "shopping list". In "A" I don't want any changes and no drop is allowed.

Problems:

1. On "A"  treeview I don't want any drop at all so I have IsDropAllowed=False on each RadTreeViewItem, but still I can drop between two items, I don't want that, what to do?

2. When I drag from "A" to "B" the item removes on "A" treeview, I don't want items removed on my "stuff list". 

3. When drop on "B" treeview I can drop between RadTreeViewItems, I only want to drop on specific Items. How to solv that?

My code is based on Telerik "DragDrop.Example", so no drag-drop code in C#, only WPF. But code is OK for this solution.

Thanks!

I have a RadChart which receives data in a fairly ordered fashion (the data points are not guarenteed to be ordered, but almost always are). However, charts seem to have their data ordered bizarrely (I'm basically trying to sort by the XCategory). If I apply an ascending sort descriptor to the chart, there is no effect; descending does indeed "go in reverse" but the data still isn't actually sorted. For horizontal bar charts this results in shuffled data, but for line charts, it results in tens of lines darting horizontally back and forth. The sort descriptors are added to both RadChart.SortDescriptors and SeriesMapping.SortDescriptors. A grouping is in effect, but not by XCategory.

Is this a common pitfall? Is something obvious missing?

I have a RadCarousel (not RadCarouselPanel) which is sometimes updated from an external source, or via the mouse, etc. What I need to be able to do is be notified that RadCarousel (or its panel) is changing which items are in view, and discover them so that the rest of the UI may update its state accordingly.

What events would I need to bind to in order to accomplish this?