Questions on UI for WPF Forum

1 answer

106 views

Hello

I have a grid with checkBox column
I want to find all the rows
where the user select the checkBox
(something like foreach..
so I can save the ID's of the selected rows in an array)

thanks

GridView

answered on 14 Dec 2009

1 answer

59 views

Record, DataRecord, CurrentRecord and SelectedRecords no longer work in Q3 2009

What are the new classes I can used alternatively? I cast a Record to a DataRecord to access its Data property currently.

SelectedRecords and its CollectionChanged event are gone...

GridView

answered on 14 Dec 2009

6 answers

223 views

Null reference exception on window maximize

I'm getting strange results with the gridview when I maximize my window and the Gridview has data. I can't figure out why it's happening (because sometimes maximizing the window works just fine and sometimes it doesn't). Here's the stack trace:

    
            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.GridView.GridViewCellsPanel.ArrangeChild(UIElement child, Int32 displayIndex, ArrangeState arrangeState) in c:\Builds\WPF_Scrum\GridView_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 1599  
        
                   at Telerik.Windows.Controls.GridView.GridViewCellsPanel.ArrangeOverride(Size arrangeSize) in c:\Builds\WPF_Scrum\GridView_WPF\Sources\Development\Controls\GridView\GridView\GridView\Virtualization\GridViewCellsPanel.cs:line 1536  
        
                   at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)  
        
                   at System.Windows.UIElement.Arrange(Rect finalRect)  
        
                   at MS.Internal.Helper.ArrangeElementWithSingleChild(UIElement element, Size arrangeSize)  
        
                   at System.Windows.Controls.ItemsPresenter.ArrangeOverride(Size arrangeSize)  
        
                   at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)  
        
                   at System.Windows.UIElement.Arrange(Rect finalRect)  
        
                   at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)  
        
                   at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)  
        
                   at System.Windows.UIElement.Arrange(Rect finalRect)  
        
                   at System.Windows.Controls.Control.ArrangeOverride(Size arrangeBounds)  
        
                   at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)  
        
                   at System.Windows.UIElement.Arrange(Rect finalRect)  
        
                   at System.Windows.Controls.Grid.ArrangeOverride(Size arrangeSize)  
        
                   at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)  
        
                   at System.Windows.UIElement.Arrange(Rect finalRect)  
        
                   at System.Windows.ContextLayoutManager.UpdateLayout()  
        
                   at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)  
        
                   at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()  
        
                   at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()  
        
                   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)  
        
                   at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)  
        
                   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)  
        
                   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)  
        
                   at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, 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)  
        
                   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, Boolean isSingleParameter)  
        
                   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)  
        
                   at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)  
        
                   at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)  
        
                   at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)  
        
                   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 System.Windows.Application.Run()  
        
                   at Tracker.App.Main() in C:\_projects\R2C\Tracker\Tracker\obj\Debug\App.g.cs:line 0  
        
                   at System.AppDomain._nExecuteAssembly(Assembly 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)  
        
                   at System.Threading.ThreadHelper.ThreadStart()  
        
              InnerException:

GridView

answered on 14 Dec 2009

1 answer

277 views

can't set SelectedItem

SelectedItem is null after set

i checked why it happened and appearently there was a problem inside
Telerik.Windows.Data.Dll
in the class
DataControl

on the SelectedItem Property
inside the

ItemCoerce function

the Items.CollectionView is null so it doesn't seceed with the IndexOf
and nothing is selected

now it all happens because the Items.CollectionView is null
i also tried to set the ItemSource & DataContext Before the assigment of selectedItem
but it didn't helped

what should i do to make it work?

thanks

GridView

answered on 12 Dec 2009

5 answers

388 views

Bind to an ObservableCollection of ObservableCollections

Hi Guys

I am trying to bind my chart to a ObservableCollection of ObservableCollections is this possible?

I have worked look at ms-help://telerik.windows.controls/telerik.windows.controls.charting/data-binding-series-mappings.html but no joy. Do you have a sample of this in VB ?

Chart

answered on 11 Dec 2009

0 answers

161 views

ThemeManager.StandardThemeNames

Hi,
I tried to build QuickStart dll, but it gave me error:
'Telerik.Windows.Controls.ThemeManager' does not contain a definition for 'StandardThemeNames'
I found that StandardThemeNames was defined as internal in 'Telerik.Windows.Controls.ThemeManager'
Please help, i need to build and debug to learn the QSF.

Thanks in advance.
Duy Doan

General Discussions

asked on 11 Dec 2009

2 answers

169 views

HowTo: Select and doubleclick row only with RowIndicator

Hi,

is there a possibility to select or to doubleclick a row only by clicking on the RowIndicator?

I need an event to open a new Window in a RadGridView.

The double click event of the RadGridView works, but if you try to change a value of a column and if you are clicking too fast, you will hit the double click event.

GridView

answered on 11 Dec 2009

4 answers

225 views

RadPane in DocumentHost only

Can I adjust RadDocking so that I would be able to place RadPane into one (tabbed) or a few RadPaneGroups, but within the same DocumentHost?

For example:

write:

- <RadDocking>

- <DocumentHost>

- <RadSplitContainer Orientation="Horizontal">

- <Items>

- <RadPaneGroup>

- <Items> <RadPane/> </Items>

</RadPaneGroup>

- <RadPaneGroup>

- <Items>

</Items>

</RadPaneGroup>

</Items>

</RadSplitContainer>

</DocumentHost>

- <SplitContainers>

- <RadSplitContainer Dock="DockedRight">

- <Items>

- <RadPaneGroup>

</RadPaneGroup>

</Items>

</RadSplitContainer>
...........

Write:

- <RadDocking>

- <DocumentHost>

- <RadSplitContainer Orientation="Horizontal">

- <Items>

- <RadPaneGroup>

- <Items> <RadPane/> <RadPane/> </Items>

</RadPaneGroup>

</Items>

</RadSplitContainer>

</DocumentHost>

- <SplitContainers>

- <RadSplitContainer Dock="DockedRight">

- <Items>

- <RadPaneGroup>

</RadPaneGroup>

</Items>

</RadSplitContainer>
...........

wrong:

- <DocumentHost>

- <RadSplitContainer Orientation="Horizontal">

- <Items>

- <RadPaneGroup>

- <Items> <RadPane/> </Items>

</RadPaneGroup>

</Items>

</RadSplitContainer>

</DocumentHost>

- <SplitContainers>

- <RadSplitContainer Dock="DockedRight">

- <Items>

- <RadPaneGroup>

</RadPaneGroup>

</Items>

</RadSplitContainer>

..........

wrong:

- <DocumentHost>

- <RadSplitContainer Orientation="Horizontal">

- <Items>

- <RadPaneGroup>

- <Items> <RadPane/> </Items>

</RadPaneGroup>

</Items>

</RadSplitContainer>

</DocumentHost>

- <SplitContainers>

- <RadSplitContainer Dock="DockedRight">

- <Items>

- <RadPaneGroup>

</RadPaneGroup>

</Items>

</RadSplitContainer>

..........
..........
..........

- <RadSplitContainer InitialPosition="FloatingDockable">

- <Items>

- <RadPaneGroup>

- <Items>

</Items>

</RadPaneGroup>

</Items>

</RadSplitContainer>

Docking

answered on 11 Dec 2009

1 answer

461 views

RadGridView MouseDoubleClick

Hello
I have a Hierarchy grid
I add a MouseDoubleClick event both to my
parent and child grids
the problem is
when I double click the child
the event raise twice, once to the child and then to the parent.

GridView

answered on 10 Dec 2009

1 answer

164 views

Column footer problem

I have in my .xaml the following code:

            <telerik:RadGridView x:Name="radGridView1" IsReadOnly="True" Grid.Column="1" Grid.Row="1" Margin="0,0,0,5" Grid.RowSpan="3"> 
        
                <telerik:RadGridView.Columns> 
        
                <telerik:GridViewDataColumn Header="Mesa" DataMemberBinding="{Binding mesa}"> 
        
                    <telerik:GridViewColumn.AggregateFunctions> 
        
                        <telerik:CountFunction Caption="# Registros encontrados: " /> 
        
                    </telerik:GridViewColumn.AggregateFunctions>      
        
                </telerik:GridViewDataColumn> 
        
                <telerik:GridViewDataColumn x:Name="efectivo" Header="efectivo" DataMemberBinding="{Binding efectivo}"> 
        
                    <telerik:GridViewColumn.AggregateFunctions> 
        
                        <telerik:SumFunction Caption="Total: " /> 
        
                    </telerik:GridViewColumn.AggregateFunctions> 
        
                </telerik:GridViewDataColumn> 
        
    .

    .

    .

    .

the count function works but the sum function doesn't, it says in spanish something like "There isn't a 'Sum' method in the 'System.Linq.Enumerable' type, compatible with the specified arguments."

The ItemSource that i'm binding is an Arraylist that contains objects of an object type that i created.

            ArrayList listaMesas = Oper_SoftCount.consultarFecha(dt); 
        
            this.radGridView1.ItemsSource = listaMesas; 
        
and the other problem is that the columns that have the aggregate functions, duplicate. 

<telerik:GridViewDataColumn Header="Mesa" DataMemberBinding="{Binding mesa}">

                    <telerik:GridViewColumn.AggregateFunctions>

                        <telerik:CountFunction Caption="# Registros encontrados: " />

                    </telerik:GridViewColumn.AggregateFunctions>     

                </telerik:GridViewDataColumn>

                <telerik:GridViewDataColumn x:Name="efectivo" Header="efectivo" DataMemberBinding="{Binding efectivo}">

                    <telerik:GridViewColumn.AggregateFunctions>

                        <telerik:SumFunction Caption="Total: " />

                    </telerik:GridViewColumn.AggregateFunctions>

                </telerik:GridViewDataColumn>

GridView

answered on 10 Dec 2009