Questions on UI for WPF Forum

1 answer

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Return key pressed and exception was thrown

I have a RadGridView with a default sort descriptor defined in xaml for my grid.
Wen i run the project, if i press return two times, an exception is trown.

Application: WpfApplication3.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.InvalidOperationException
Stack:
at System.Collections.Generic.ArraySortHelper`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].BinarySearch(System.__Canon[], Int32, Int32, System.__Canon, System.Collections.Generic.IComparer`1<System.__Canon>)
at System.Array.BinarySearch[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.__Canon[], Int32, Int32, System.__Canon, System.Collections.Generic.IComparer`1<System.__Canon>)
at System.Collections.Generic.List`1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].BinarySearch(Int32, Int32, System.__Canon, System.Collections.Generic.IComparer`1<System.__Canon>)
at Telerik.Windows.Data.KeyedCollection.IndexOf(System.Object)
at Telerik.Windows.Data.QueryableCollectionView.InternalIndexOf(System.Object)
at Telerik.Windows.Data.QueryableCollectionView.IndexOf(System.Object)
at Telerik.Windows.Data.QueryableCollectionView.Contains(System.Object)
at Telerik.Windows.Data.DataItemCollection.Contains(System.Object)
at Telerik.Windows.Controls.GridView.GridViewDataControl.CanActivateRowExecute(System.Object, System.Windows.Input.CanExecuteRoutedEventArgs)
at System.Windows.Input.CommandBinding.OnCanExecute(System.Object, System.Windows.Input.CanExecuteRoutedEventArgs)
at System.Windows.Input.CommandManager.FindCommandBinding(System.Windows.Input.CommandBindingCollection, System.Object, System.Windows.RoutedEventArgs, System.Windows.Input.ICommand, Boolean)
at System.Windows.Input.CommandManager.FindCommandBinding(System.Object, System.Windows.RoutedEventArgs, System.Windows.Input.ICommand, Boolean)
at System.Windows.Input.CommandManager.OnCanExecute(System.Object, System.Windows.Input.CanExecuteRoutedEventArgs)
at System.Windows.UIElement.OnCanExecuteThunk(System.Object, System.Windows.Input.CanExecuteRoutedEventArgs)
at System.Windows.Input.CanExecuteRoutedEventArgs.InvokeEventHandler(System.Delegate, System.Object)
at System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate, System.Object)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(System.Object, System.Windows.RoutedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(System.Object, System.Windows.RoutedEventArgs, Boolean)
at System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject, System.Windows.RoutedEventArgs)
at System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs, Boolean)
at System.Windows.Input.RoutedCommand.CriticalCanExecuteWrapper(System.Object, System.Windows.IInputElement, Boolean, System.Windows.Input.CanExecuteRoutedEventArgs)
at System.Windows.Input.RoutedCommand.CanExecuteImpl(System.Object, System.Windows.IInputElement, Boolean, Boolean ByRef)
at System.Windows.Input.RoutedCommand.CriticalCanExecute(System.Object, System.Windows.IInputElement, Boolean, Boolean ByRef)
at Telerik.Windows.Controls.GridView.GridViewDataControl.ExecutePendingCommand()
at Telerik.Windows.Controls.GridView.GridViewDataControl.OnKeyDown(System.Windows.Input.KeyEventArgs)
at System.Windows.UIElement.OnKeyDownThunk(System.Object, System.Windows.Input.KeyEventArgs)
at System.Windows.Input.KeyEventArgs.InvokeEventHandler(System.Delegate, System.Object)
at System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate, System.Object)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(System.Object, System.Windows.RoutedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(System.Object, System.Windows.RoutedEventArgs, Boolean)
at System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject, System.Windows.RoutedEventArgs)
at System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs)
at System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs, Boolean)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs)
at System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport)
at System.Windows.Interop.HwndKeyboardInputProvider.ReportInput(IntPtr, System.Windows.Input.InputMode, Int32, System.Windows.Input.RawKeyboardActions, Int32, Boolean, Boolean, Int32)
at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(System.Windows.Interop.MSG ByRef, Boolean ByRef)
at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(System.Windows.Interop.MSG ByRef, System.Windows.Input.ModifierKeys)
at System.Windows.Interop.HwndSource.OnPreprocessMessage(System.Object)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
at System.Windows.Threading.Dispatcher.InvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
at System.Windows.Threading.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority, System.Delegate, System.Object)
at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(System.Windows.Interop.MSG ByRef, Boolean ByRef)
at System.Windows.Interop.HwndSource+WeakEventPreprocessMessage.OnPreprocessMessage(System.Windows.Interop.MSG ByRef, Boolean ByRef)
at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(System.Windows.Interop.MSG ByRef)
at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame)
at System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(System.Object)
at System.Windows.Application.RunInternal(System.Windows.Window)
at System.Windows.Application.Run(System.Windows.Window)
at System.Windows.Application.Run()
at WpfApplication3.App.Main()

the folowing code, reproduces my issue.

<Window x:Class="WpfApplication3.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

Title="MainWindow" Height="350" Width="525">

<Grid>

<telerik:RadGridView x:Name="grid" ItemsSource="{Binding Itens}">

<telerik:RadGridView.SortDescriptors>

<telerik:SortDescriptor Member="Id" SortDirection="Ascending" />

</telerik:RadGridView.SortDescriptors>

</telerik:RadGridView>

</Grid>

</Window>

public class Item

{

public int Id { get; set; }

public string Name { get; set; }

}

public class ViewModel

{

public ObservableCollection<Item> Itens { get; set; }

public ViewModel()

{

this.Itens = new ObservableCollection<Item>();

Itens.Add(new Item() { Name = "teste", Id = 0 });

Itens.Add(new Item() { Name = "teste 1", Id = 1 });

Itens.Add(new Item() { Name = "teste 2", Id = 2 });

}

public partial class MainWindow : Window

{

public MainWindow()

{

this.DataContext = new ViewModel();

InitializeComponent();

}

GridView

answered on 09 Aug 2011

2 answers

141 views

WPF - Masked Input Control

User would like to be avoid stopping at a date since it isn't always required. Setting the IsTabStop to False doesn't work. Even after setting the IsTabStop property to false, the cursor continues to stop for each part of the date (mm/dd/yyyy).

MaskedInput (Numeric, DateTime, Text, Currency)

answered on 08 Aug 2011

2 answers

165 views

need help with radscheduleview raddragdropmanager and radcontextmenu

hi there,

I'm fairly new to Telerik and WPF so I was wondering if someone could help me with a few questions.
My questions are related mainly to RadScheduleView Drag and Drop behavior and also the ability to show a RadContextMenu in a specific area of the radscheduleview control. I have included a sample project and the screenshot below.

1. If I drag a GridViewRow to a schedule view, is it possible to delete that row from my grid after it is dragged to the RadScheduleView ?
2. Is it possible to drag a GridViewRow and drag that row to the GroupHeader and then add a new resource ?
How can I do that?
3. Why does my custom ScheduleViewDragDropBehavior keep calling ConvertDraggedData
even if DragComplete is not actually reached in the OnDragInfo draghandler of my RadGridView ?
4. How can I setup my RadContextMenu to only show up in the GroupHeader to the left (I'm using Timeline View)?
Is it possible to hide ContextMenu when I right click the TimeViewDefinition area ?

SampleProject
AppScreenshot

ScheduleView

answered on 08 Aug 2011

2 answers

129 views

How can I create my custom tiles?

Looking for input on what others do. I've implemented a custom provider. I create a large image in memory and then slice it into tiles. This works until the image is too big and I run out of memory. Surely there is a better way to do this. Ideally I would like something that creates the tiles directly to disk. Another 'problem' is that I'm doing things like 'DrawPolygon' onto my image so I don't have knowledge of exactly which pixels are being colored, otherwise I could easily figure which pixels to write to. Appreciate any help. Thanks.

Map

answered on 08 Aug 2011

2 answers

140 views

How to bind data to sqldatasource.

I want to bind a chart to a table in sql server, is that possible in wpf for windows application?

Thanks in advance

Chart

answered on 08 Aug 2011

1 answer

122 views

Insert cancel problem

When the user adds a new row to the GridView and then cancels the inserting process the event 'RowEditEnded' is called with "e.EditOperationType == Insert" and "e.EditAction == Cancel".

Is there some way to get the BusinessObject behind the inserted row that was canceled?

e.EditedItem, e.NewData are both null.

GridView

answered on 08 Aug 2011

7 answers

203 views

Child radgridview sorting problem

Hi,
I am trying to bind a hierachical gridview using entity framework 4.0. (tables: Countries with Districts)
Whenever i try to add a child table definition to the main gridview the ability to sort the child gridview is lost ( when setting the property relation):
d.Relation = new Telerik.Windows.Data.PropertyRelation("Districts");

If i manually add the datasource then sorting works perfectly. Is this the normal behaviour ? Am i doing something wrong?

GridViewTableDefinition d = new GridViewTableDefinition();
d.DataSource = new SofERPEntities().Districts.Where(z=>z.CountryId==5).ToList(); => sorting in child gridview works
//d.Relation = new Telerik.Windows.Data.PropertyRelation("Districts"); => sorting in child gridview not working
this.radGridView1.ChildTableDefinitions.Add(d);

GridView

answered on 08 Aug 2011

1 answer

283 views

Usercontrol in a ribbontab

I'm trying to write an app where each part of the config is held in a usercontrol. In moving this to WPF from winforms I thought it would look good to put the config tabbed in a ribbon at the top.

I tried using the ribbonbar but ran into a problem when a tab was selected that contained a usercontrol I've now got the RibbonView and tried the same thing and run into the same problem.

My code is:

<Window x:Class=

"WpfApplication1.MainWindow"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        Title="MainWindow" Height="350" Width="525"

        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"

        xmlns:WpfApplication1="clr-namespace:WpfApplication1">

<Grid

<telerik:RadRibbonView Name="radRibbonView1"

<telerik:RadRibbonTab

<WpfApplication1:UserControl1

</telerik:RadRibbonTab

</telerik:RadRibbonView

</Grid

</Window>

Where UserControl1 is an empty user control.

When I try to run this, I get the following error:

Specified element is already the logical child of another element. Disconnect it first.

The trace is:

   at System.Windows.FrameworkElement.ChangeLogicalParent(DependencyObject newParent)
   at System.Windows.FrameworkElement.AddLogicalChild(Object child)
   at System.Windows.Controls.HeaderedContentControl.OnHeaderChanged(Object oldHeader, Object newHeader)
   at System.Windows.Controls.HeaderedContentControl.OnHeaderChanged(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, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.StyleHelper.ApplyTemplatedParentValue(DependencyObject container, FrameworkObject child, Int32 childIndex, FrugalStructList`1& childRecordFromChildIndex, DependencyProperty dp, FrameworkElementFactory templateRoot)
   at System.Windows.StyleHelper.InvalidatePropertiesOnTemplateNode(DependencyObject container, FrameworkObject child, Int32 childIndex, FrugalStructList`1& childRecordFromChildIndex, Boolean isDetach, FrameworkElementFactory templateRoot)
   at System.Windows.FrameworkTemplate.InvalidatePropertiesOnTemplate(DependencyObject container, Object currentObject)
   at System.Windows.FrameworkTemplate.HandleBeforeProperties(Object createdObject, DependencyObject& rootObject, DependencyObject container, FrameworkElement feContainer, INameScope nameScope)
   at System.Windows.FrameworkTemplate.<>c__DisplayClass6.<LoadOptimizedTemplateContent>b__3(Object sender, XamlObjectEventArgs args)
   at System.Xaml.XamlObjectWriter.OnBeforeProperties(Object value)
   at System.Xaml.XamlObjectWriter.Logic_CreateAndAssignToParentStart(ObjectWriterContext ctx)
   at System.Xaml.XamlObjectWriter.WriteStartMember(XamlMember property)
   at System.Xaml.XamlWriter.WriteNode(XamlReader reader)
   at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter)

RibbonView and RibbonWindow

answered on 08 Aug 2011

2 answers

159 views

Click event does not fire

The data renders just fine but the Click event does not fire...

XAML below

<telerikChart:RadChart x:Name="radChartCompanyRevenue" Width="500" Height="350" IsEnabled="True">

<telerikCharting:ChartDefaultView>

<telerikCharting:ChartDefaultView.ChartLegend>

<telerikCharting:ChartLegend Visibility="Collapsed" />

</telerikCharting:ChartDefaultView.ChartLegend>

<telerikCharting:ChartDefaultView.ChartArea>

<telerikCharting:ChartArea ItemClick="ChartArea_ItemClick" />

</telerikCharting:ChartDefaultView.ChartArea>

</telerikCharting:ChartDefaultView>

<telerikChart:RadChart.SeriesMappings>

<telerikCharting:SeriesMapping>

<telerikCharting:SeriesMapping.SeriesDefinition>

<telerikCharting:PieSeriesDefinition>

</telerikCharting:PieSeriesDefinition>

</telerikCharting:SeriesMapping.SeriesDefinition>

<telerikCharting:SeriesMapping.ItemMappings>

<telerikCharting:ItemMapping DataPointMember="XCategory" FieldName="Month"/>

<telerikCharting:ItemMapping DataPointMember="YValue" FieldName="Revenue"></telerikCharting:ItemMapping>

</telerikCharting:SeriesMapping.ItemMappings>

</telerikCharting:SeriesMapping>

</telerikChart:RadChart.SeriesMappings>

</telerikChart:RadChart>

C# code below

// constructor

public DrillDown_Report()

{

InitializeComponent();

BindCompanyRevenue();

}

private void ChartArea_ItemClick(object sender, Telerik.Windows.Controls.Charting.ChartItemClickEventArgs e)

{

CompanyRevenue_Event cr = e.DataPoint.DataItem as CompanyRevenue_Event;

MessageBox.Show(cr.Month + " " + cr.Revenue.ToString());

}

#region Company Revenue

private void BindCompanyRevenue()

{

radChartCompanyRevenue.ItemsSource = this.GetCompanyRevenue();

radChartCompanyRevenue.DefaultView.ChartTitle.Content = "Company Revenue";

radChartCompanyRevenue.DefaultView.ChartLegend.Visibility = System.Windows.Visibility.Collapsed;

radChartCompanyRevenue.DefaultView.ChartArea.ItemClick += new EventHandler<Telerik.Windows.Controls.Charting.ChartItemClickEventArgs>(ChartArea_ItemClick);

}

private List<CompanyRevenue_Event> GetCompanyRevenue()

{

List<CompanyRevenue_Event> companyRevenue = new List<CompanyRevenue_Event>();

companyRevenue.Add(new CompanyRevenue_Event(2011, "Jan", 189213.58));

companyRevenue.Add(new CompanyRevenue_Event(2011, "Feb", 179213.58));

companyRevenue.Add(new CompanyRevenue_Event(2011, "Mar", 180213.58));

companyRevenue.Add(new CompanyRevenue_Event(2011, "Apr", 184213.58));

return companyRevenue;

}

#endregion

Chart

answered on 08 Aug 2011

2 answers

389 views

Autosize columns

Hi,

I using a MVVM environment and try to achieve an auto size of all columns depending on a user preselected mode.
Therefore I've bound the RadGridView.ColumnWidth to a Property in the ViewModel. As I change the value of the property the values of the grid is also changing but the existing Columns are not resized. To force the resize if have iterate to each Column an change the Width.
But is not the best thing to do in an MVVM concept. Is there any better solution for that?

Regards
Thomas

GridView

answered on 08 Aug 2011