Questions on UI for WPF Forum

0 answers

112 views

MY USER CONTROL XAML

<UserControl x:Class="CommonControl.PagingBar"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
   xmlns:PagingBar="clr-namespace:CommonControl;assembly=CommonControl"
    Height="38" Width="304" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">
    <StackPanel Height="34" Width="300">
        <telerik:RadButton Name="btnPaginStart" Click="btnPaginStart_Click" HorizontalAlignment="Left" Margin="5,5,0,-24" Height="24" Width="24"   >|<</telerik:RadButton>
        <telerik:RadButton Name="btnPaginEnd" Click="btnPaginEnd_Click" HorizontalAlignment="Left" Margin="220,0,0,-24" Height="24" Width="24" >>|</telerik:RadButton>
        <telerik:RadButton Name="btnPaginPrevious" Click="btnPaginPrevious_Click" HorizontalAlignment="Left" Margin="35,0,0,-24" Height="24" Width="24" ><</telerik:RadButton>
        <telerik:RadButton Name="btnPaginNext" Click="btnPaginNext_Click" Margin="190,0,0,0" HorizontalAlignment="Left" Height="24" Width="24">></telerik:RadButton>
        <my:IntegerInput Height="18" Margin="-50,-20,0,0" Name="integerInput1" ValueChanged="integerInput1_ValueChanged" Width="120" xmlns:my="clr-namespace:DevComponents.WpfEditors;assembly=DevComponents.WpfEditors" />
    </StackPanel>
</UserControl>

XAML.CS

public event EventHandler pgnPaging_EventExecuteLoad;

private void btnPaginEnd_Click(object sender, RoutedEventArgs e)
        {
         // WANT TO CALL EVENT IN BUTTON CLICK
          pgnPaging_EventExecuteLoad(NULL,NULL);
        }

USER CONTROL USE IN

<PagingBar:PagingBar Height="38" VerticalAlignment="Top" HorizontalAlignment="Left" Width="256" ></PagingBar:PagingBar>

WANT TO CALL

public void pgnPaging_EventExecuteLoad(object sender, System.EventArgs e)
        {
            loadGroup(2, 1, 20);
        }

ERROR IS - Object reference not set to an instance of an object

General Discussions

asked on 13 Jul 2010

4 answers

163 views

Calculate Grand total of column which is calculated through IvalueConverter

Hi all,
i have a total column in my grid. which is calculated through IValueConverter. it works fine. i want to have its grand total in Footer. so how to do it?

GridView

answered on 13 Jul 2010

3 answers

293 views

RadDocking.SetFloatingLocation usage

Hello,

I have a zoom functionnality in a RadSplitContainer, i would like to place bottom-right my main application window.

I create this splitcontainer in xaml.

    
            <telerik:RadSplitContainer InitialPosition="FloatingOnly" x:Name="ZoomContainer"  
        
                                              telerik:RadDocking.FloatingSize="200 200"     > 
        
                            <telerik:RadPaneGroup  > 
        
                                <telerik:RadPane CanDockInDocumentHost="False" CanUserClose="True" x:Name="paneZoom"   
        
                                        DataContext="{Binding DataContext, ElementName=root}" 
        
                                        IsHidden="{Binding DisplayZoom, Mode=TwoWay, Converter={StaticResource convInverseBoolean}}"  
        
                                      Header="Zoom"  > 
        
                                    <!--<Expander IsExpanded="True" Header="Zoom">--> 
        
                                    <Grid x:Name="rootZoom">

Then on Main window load container I'd like tu set programmaticaly the floating location :

    
            private void QDiagram_Loaded(object sender, RoutedEventArgs e) 
        
            { 
        
               //ZoomContainer.SetValue(RadDocking.FloatingLocationProperty, new Point(132, 10)); 
        
              RadDocking.SetFloatingLocation(ZoomContainer, new Point(132, 10)); 
        
            }

But it seems not to work...

Thanks for your help
Aurore

ps : is there a difference between using Object.SetValue(property, value) and type.Setproperty(object, value) ?

Docking

answered on 12 Jul 2010

1 answer

184 views

How to really close the Radpanes?

Hi,

When I close the panes of RadDocking at runtime, and then Serialize the layout setting by using SaveLayout method, but the layout setting in XAML format still contain the panes I just closed. Is there any way to solve it?

Docking

answered on 12 Jul 2010

7 answers

813 views

Preserve selected items after refreshing data source

Hello!

Is it possible to preserve all selected items in RadGridView after refreshing the data source? The grid ist bound to an observable collection. This collection is completly replaced after an user action. Actually the default behaviour of the grid is to select the first item in collection. I´d like to change this because it annoys the user.

Thank you and with kind regards
Philip

GridView

answered on 12 Jul 2010

3 answers

126 views

When apply LoadLayout, contents are not loading.

Hi,

am saving a layout in XML file. and whenever that form opens am loading same layout after InitializeComponent().
While doing this layout is coming correctly. but whatever contents like grids, buttons are missing from all the panes.

What could be a reason?

Thanks...!!!

Docking

answered on 12 Jul 2010

1 answer

96 views

Minimum Problem

Dear Colleagues,

I have difficulties to use Minimum Property. Here's the XAML:

<Telerik:RadNumericUpDown IsInteger="True" Minimum="0" x:Name="NumericPieces" Value="1" Grid.Column="1" Margin="5" Grid.Row="0"></Telerik:RadNumericUpDown>

Control sets its value to 0 (zero), and the user cannot increase the value. When I remove the Minimum property from the definition, it works fine.

Am I missing something ? (Version : 2010.1.702.35)

Thank you.

NumericUpDown

answered on 12 Jul 2010

4 answers

868 views

Check for duplicates in RadGridView rows

We have a RadGridView with 2 columns.
When we edit a cell or when we are adding a new row, we want to loop through the rows cell[1] to check for duplicates.
We want to do this in...

private void TheGridCellValidating(object sender, GridViewCellValidatingEventArgs e).

We try things like this...

            var grid = (e.Row).GridViewDataControl;
            string value = e.NewValue.ToString();

            var rows = grid.ChildrenOfType<GridViewRow>();

            foreach (var row in rows)
            {
                if (row == null) continue;
                if (row.Cells == null) continue;
                if (row.Cells[1] != null)
                {
                    var s = row.Cells[0]......
                    ...
                    ....
                }
            }
But... it won't work.
How can we iterate on the rows and check for duplicates?

GridView

answered on 12 Jul 2010

1 answer

113 views

Crash when binding InformationLayer to a string collection

Say I have a DataContext with:

ObservableCollection<Toto> m_files = new ObservableCollection<Toto>();

public ObservableCollection<Toto> Filenames

{

get

{

return m_files;

}

For some reason, this code:

<map:InformationLayer ItemsSource="{Binding Filenames}">

<map:InformationLayer.ItemTemplate>

<DataTemplate>

<Canvas map:MapLayer.Location="5, 5" Width="100" Height="100" Background="AliceBlue">

<TextBlock Text="{Binding}"/>

</Canvas>

</DataTemplate>

</map:InformationLayer.ItemTemplate>

</map:InformationLayer>

crashes with this exception:

System.FormatException was unhandled

Message=Input string was not in a correct format.

Source=Telerik.Windows.Controls.DataVisualization

StackTrace:

at Telerik.Windows.Controls.Map.Location.Parse(String source) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q1_SP2\Sources\Development\Controls\DataVisualization\Map\Location.cs:line 200

at Telerik.Windows.Controls.Map.LocationConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q1_SP2\Sources\Development\Controls\DataVisualization\Map\LocationConverter.cs:line 40

at System.ComponentModel.TypeConverter.ConvertFrom(Object value)

at Telerik.Windows.Controls.Map.InformationLayer.GetLocationFromItem(Object item) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q1_SP2\Sources\Development\Controls\DataVisualization\Map\Layers\InformationLayer.cs:line 1214

at Telerik.Windows.Controls.Map.InformationLayer.PrepareContainerForItemOverride(DependencyObject element, Object item) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q1_SP2\Sources\Development\Controls\DataVisualization\Map\Layers\InformationLayer.cs:line 449

at System.Windows.Controls.ItemsControl.MS.Internal.Controls.IGeneratorHost.PrepareItemContainer(DependencyObject container, Object item)

at System.Windows.Controls.ItemContainerGenerator.System.Windows.Controls.Primitives.IItemContainerGenerator.PrepareItemContainer(DependencyObject container)

at System.Windows.Controls.Panel.reGenerateChildren()

at System.Windows.Controls.Panel.OnItemsChangedInternal(Object sender, ItemsChangedEventArgs args)

at System.Windows.Controls.Panel.OnItemsChanged(Object sender, ItemsChangedEventArgs args)

at System.Windows.Controls.ItemContainerGenerator.OnRefresh()

at System.Windows.Controls.ItemContainerGenerator.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)

at System.Windows.Controls.ItemContainerGenerator.System.Windows.IWeakEventListener.ReceiveWeakEvent(Type managerType, Object sender, EventArgs e)

at System.Windows.WeakEventManager.DeliverEventToList(Object sender, EventArgs args, ListenerList list)

at System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)

at System.Collections.Specialized.CollectionChangedEventManager.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)

at System.Collections.Specialized.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)

at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)

at System.Windows.Controls.ItemCollection.System.Windows.IWeakEventListener.ReceiveWeakEvent(Type managerType, Object sender, EventArgs e)

at System.Windows.WeakEventManager.DeliverEventToList(Object sender, EventArgs args, ListenerList list)

at System.Windows.WeakEventManager.DeliverEvent(Object sender, EventArgs args)

at System.Collections.Specialized.CollectionChangedEventManager.OnCollectionChanged(Object sender, NotifyCollectionChangedEventArgs args)

at System.Windows.Data.CollectionView.OnCollectionChanged(NotifyCollectionChangedEventArgs args)

at System.Windows.Data.ListCollectionView.RefreshOverride()

at System.Windows.Data.CollectionView.RefreshInternal()

at System.Windows.Data.CollectionView.Refresh()

at System.Windows.Data.CollectionView.EndDefer()

at System.Windows.Data.CollectionView.DeferHelper.Dispose()

at System.Windows.Controls.ItemCollection.SetCollectionView(CollectionView view)

at System.Windows.Controls.ItemCollection.SetItemsSource(IEnumerable value)

at System.Windows.Controls.ItemsControl.OnItemsSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)

at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)

at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)

at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)

at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp)

at System.Windows.Data.BindingExpression.Invalidate(Boolean isASubPropertyChange)

at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)

at System.Windows.Data.BindingExpression.Activate(Object item)

at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)

at System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext(Boolean lastChance)

at MS.Internal.Data.DataBindEngine.Task.Run(Boolean lastChance)

at MS.Internal.Data.DataBindEngine.Run(Object arg)

at MS.Internal.Data.DataBindEngine.OnLayoutUpdated(Object sender, EventArgs e)

at System.Windows.ContextLayoutManager.fireLayoutUpdateEvent()

at System.Windows.ContextLayoutManager.UpdateLayout()

at System.Windows.UIElement.UpdateLayout()

at System.Windows.Interop.HwndSource.SetLayoutSize()

at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)

at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)

at System.Windows.Window.SetRootVisual()

at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)

at System.Windows.Window.CreateSourceWindowImpl()

at System.Windows.Window.SafeCreateWindow()

at System.Windows.Window.ShowHelper(Object booleanBox)

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 WpfApplication1.App.Main() in C:\Users\frederic.souchu\documents\visual studio 2010\Projects\WpfMap\WpfApplication1\obj\x86\Release\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: System.FormatException

Message=Input string was not in a correct format.

Source=Telerik.Windows.Controls.DataVisualization

StackTrace:

at Telerik.Windows.Controls.Map.Location.Parse(String source) in c:\Builds\WPF_Scrum\Release_WPF_2010_Q1_SP2\Sources\Development\Controls\DataVisualization\Map\Location.cs:line 185

InnerException:

Note that replacing the <string> element by any sort of class just works fine!
Regards
Frederic

Map