Questions on UI for WPF Forum

1 answer

125 views

Hi All

I am getting the following error when adding or removing objects from an observable collection in the ViewModel from which the RadBook is bound to :
Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.Book.BookPanel.MeasureOverride(System.Windows.Size availableSize = {System.Windows.Size}) Line 181

Its Looking for this file:
c:\Builds\WPF_Scrum\Navigation_WPF_2010_Q1\Sources\Development\Controls\Navigation\Book\BookPanel.cs

This is very urgent as the error was not detected during testing, is very random in its nature and is in a production system.

Regards

Nick

Book

answered on 17 Jun 2010

3 answers

121 views

NullRef exception when pressing Ctrl+C

Hello,

When I press the Ctrl+C inside GridView, I get following exception

Am I doing something wrong?

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.GridViewExportWriter.RenderDataCells(Object item)
       at Telerik.Windows.Controls.GridViewExportWriter.RenderDataRows(IEnumerable items)
       at Telerik.Windows.Controls.GridViewExportWriter.Render()
       at Telerik.Windows.Controls.GridView.GridViewDataControl.Export(Stream stream, GridViewExportOptions options)
       at Telerik.Windows.Controls.ExportExtensions.GetContent(ExportFormat format, GridViewDataControl source, Boolean includeHeader, Boolean includeFooter, IEnumerable items)
       at Telerik.Windows.Controls.ExportExtensions.ToCsv(GridViewDataControl source, IEnumerable items, Boolean includeHeader)
       at Telerik.Windows.Controls.GridView.GridViewDataControl.CopyExecuted(Object sender, ExecutedRoutedEventArgs e)
       at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
       at System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
       at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
       at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
       at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
       at System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e)
       at System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)
       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.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
       at System.Windows.Input.RoutedCommand.ExecuteCore(Object parameter, IInputElement target, Boolean userInitiated)
       at System.Windows.Input.CommandManager.TranslateInput(IInputElement targetElement, InputEventArgs inputEventArgs)
       at System.Windows.UIElement.OnKeyDownThunk(Object sender, KeyEventArgs e)
       at System.Windows.Input.KeyEventArgs.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.HwndKeyboardInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawKeyboardActions actions, Int32 scanCode, Boolean isExtendedKey, Boolean isSystemKey, Int32 virtualKey)
       at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled)
       at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers)
       at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)
       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 System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
       at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled)
       at System.Windows.Interop.HwndSource.WeakEventPreprocessMessage.OnPreprocessMessage(MSG& msg, Boolean& handled)
       at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(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 System.Windows.Application.Run()
       at Kymdata.CableTool.UI.App.Main() in C:\DEV\CMT\UI\obj\x86\Debug\App.g.cs:line 50
       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:

GridView

answered on 17 Jun 2010

1 answer

125 views

Sorting a GridViewImageColumn

Sorting and filtering on image columns looks to be disabled (for obvious reasons).

However, I have an image column that only displays one of two different images, bound to a URL. Let's say that these images represent YES or NO (but I want this to be displayed pictorially rather than as text or a checkbox).

Is there any way that I can sort or filter on this column, displaying the URL (or custom text basd on the URL) as the filter, for example.

Thanks.

GridView

answered on 17 Jun 2010

4 answers

89 views

Handle Copy/Paste between two GridViews

Hello,

My view has two GridViews controls.

When user selects several rows in first GridView I need to response to Ctrl+C and remember the rows he selected (I do not need to store data in a clipboard).

When user focuses second grid and presses Ctrl+V I need to copy selected rows from first to second grid.

I don't have problem coping these rows, I just to know how can I capture Ctrl+C and Ctrl+V when grids are focused.

Thank You!

GridView

answered on 17 Jun 2010

4 answers

170 views

SelectedPane vs "FocusedPane"

hi,

I am trying to add a row in a grid that is insine a Pane Group. It works fine if the pane is docked, however, when it's in auto hide mode the property SelectedPane returns the pane that is docked behind it, and if there is no pane docked it returns a null pointer. How can I get the "focused" pane, instead of the selected pane? Thanks.

Docking

answered on 17 Jun 2010

5 answers

581 views

changing the edited cell background color dynamically

Hi,
I have a telerik gridview control in wpf. I want to highlight the cells, which are going to be edited. I have a CellValidating eventhandler, inside the event I have written the code :

GridViewCell cell = e.Cell;
cell.Background = Brushes.Green;

The color of cell is not changing, if I am moving my cursor to the different row of grid. But if I am moving cursor to different cells in the same row of grid , the color of the cells , whatever editted is changed to "Green" as I have specified in CellValidating eventhandler. In both cases, cellValidating eventhandler is getting called, but changes in background color is not happened. Can any one please help me to resolve this issue.

Regards,
Rajesh

GridView

answered on 17 Jun 2010

1 answer

92 views

Using Chart controls with SQL Reporting Services

How can we use the RadChart controls with SQL 2005 Reporting Services.

Chart

answered on 17 Jun 2010

1 answer

110 views

How to return set values of a selected row

Within a project I have a grid bound to a Index collection which is generated from a proxy service

    
             private void QueryActivities()  
        
                    {  
        
                        QueryClient qc = new QueryClient("BasicHttpBinding_IQuery");  
        
                        QueryFilter filter = new QueryFilter();  
        
                        filter.CallForService = cfsCB;  
        
                        filter.NCICReturn = false;  
        
                        filter.RMSQuery = false;  
        
                        filter.DLSwipe = false;  
        
                        filter.Booking = false;  
        
                        filter.ArrestReport = reportCB;  
        
                        filter.CustodyReport = reportCB;  
        
                        filter.CitationReport = reportCB;  
        
                        filter.FieldInterviewReport = reportCB;  
        
                        filter.IncidentReport = reportCB;  
        
                        filter.IncidentSupplimentReport = reportCB;  
        
                        var actresult = qc.GetFilteredActivityIndex(filter);  
        
                        this.actGridView.ItemsSource = actresult;  
        
                    }

The grid currentlty displays 5 (of 20) fields ( first name , last name, activity type, Address, and date )

I need to be able to select a row and return an assoicated ID field which is part of the index collection. ID is an actual object and not the index of [0]... of the colleciton or row.

Any samples or suggestions would be appreciated.

In the past I have seen examples such as

    
            //placed in Window initialization  
        
            this.actGridView.Loaded += (o, e) => 
        
                      {  
        
                          this.actGridView.SelectedItems.CollectionChanged += new NotifyCollectionChangedEventHandler(SelectedItems_CollectionChanged);  
        
                      };

    
            void SelectedItems_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)  
        
                    {  
        
                        if (e.Action == NotifyCollectionChangedAction.Add)  
        
                        {  
        
                            var person = e.NewItems[0] as People;  
        
                            //PeopleView.SelectedPeople.Add(person); //writes selected values to selected people when row is selected.  
        
                            myID = person.uniqueID;  
        
                        }  
        
                    }

Where this has not worked is that I only want to captrure one value I do not want to recreate or build a new collection . Also using this approach the variable is attempted to be set when the grid loads however it is currently setting it to null or no value so I assume something is amiss either in the code or the approach I am taking.

Any suggestions on how to capture just one value of the collection which is not visually rendered in the grid vs rebuilding an entire collection would be greatly appreciated.

I am currently using the WPF desktop UI controls Q2 2010 ( 2010.1.603.35 )

Thank you
Randy

GridView

answered on 17 Jun 2010

2 answers

295 views

GridView DataTemplate in dynamic xaml

Good day!
I have such a form:

    
            <Grid x:Name="LayoutRoot">

            <StackPanel x:Name="spQuestions" Orientation="Vertical" Grid.Column="1" Grid.Row="8" Grid.ColumnSpan="3" HorizontalAlignment="Left">

            </StackPanel>

            </Grid>

and I put there a RadGridView using xaml.cs file:

    
            RadGridView gridView = new RadGridView();

            gridView.ItemsSource = question.Answers;

            gridView.AutoGenerateColumns = false;

            gridView.ScrollMode = Telerik.Windows.Controls.GridView.ScrollUpdateMode.RealTime;gridView.ShowGroupPanel = false;

            spQuestions.Children.Add(gridView);

So I make my xaml dynamically.

Is it possible to make someting like such structure usin dinamic xaml
<telerikGridView:GridViewDataColumn Header="Варианты ответа" UniqueName="Name" MinWidth="300" MaxWidth="2000">
   <telerikGridView:GridViewDataColumn.CellTemplate>
       <DataTemplate>
          <RadioButton Content="{Binding Text}" FontFamily="Verdana" FontSize="13" Foreground="#FF170000" />
       </DataTemplate>
   </telerikGridView:GridViewDataColumn.CellTemplate>
</telerikGridView:GridViewDataColumn>

?

GridView