Questions on UI for WPF Forum

0 answers

148 views

Double-fired OnDrop for listbox inside RadTileView

When the list box lives inside a RadTileView, the OnDrop event will get fired twice with the same parameters.

<telerik:RadTileView>

<telerik:RadTileViewItem>

<Grid x:Name="LayoutRoot" Background="White">

<Grid.Resources>

<Style TargetType="ListViewItem">

<Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True"></Setter>

</Style>

<DataTemplate x:Key="ApplicationTemplate">

<StackPanel Orientation="Horizontal">

<TextBlock Margin="5" Text="{Binding Name}" VerticalAlignment="Center"></TextBlock>

</StackPanel>

</DataTemplate>

</Grid.Resources>

<Grid.ColumnDefinitions>

<ColumnDefinition></ColumnDefinition>

</Grid.ColumnDefinitions>

<ListView x:Name="ApplicationList" ItemTemplate="{StaticResource ApplicationTemplate}" AllowDrop="True"/>

<ListView x:Name="MyAppList" Background="Gray" Grid.Column="1"

ItemTemplate="{StaticResource ApplicationTemplate}" AllowDrop="True"/>

</Grid>

</telerik:RadTileViewItem>

</telerik:RadTileView>

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

ObservableCollection<Item> items = new ObservableCollection<Item>();

for (int i = 1; i <= 10; i++)

items.Add(new Item() { Name = string.Format("item {0}", i) });

ApplicationList.ItemsSource = items;

MyAppList.ItemsSource = new ObservableCollection<Item>();

DragDropManager.AddDragInitializeHandler(ApplicationList, OnDragInitialize);

DragDropManager.AddDragInitializeHandler(MyAppList, OnDragInitialize);

DragDropManager.AddGiveFeedbackHandler(ApplicationList, OnGiveFeedback);

DragDropManager.AddGiveFeedbackHandler(MyAppList, OnGiveFeedback);

DragDropManager.AddDragDropCompletedHandler(ApplicationList, OnDragCompleted);

DragDropManager.AddDragDropCompletedHandler(MyAppList, OnDragCompleted);

DragDropManager.AddDropHandler(ApplicationList, OnDrop);

DragDropManager.AddDropHandler(MyAppList, OnDrop);

}

private void OnDragInitialize(object sender, DragInitializeEventArgs args)

{

args.AllowedEffects = DragDropEffects.Move;

//args.AllowedEffects = DragDropEffects.All;

args.Data = ((FrameworkElement)args.OriginalSource).DataContext;

args.DragVisual = new ContentControl { Content = args.Data, ContentTemplate = LayoutRoot.Resources["ApplicationTemplate"] as DataTemplate };

}

private void OnGiveFeedback(object sender, Telerik.Windows.DragDrop.GiveFeedbackEventArgs args)

{

System.Diagnostics.Trace.WriteLine(string.Format("{0} - OnGiveFeedback sender={1}", DateTime.Now, sender));

args.SetCursor(Cursors.Arrow);

args.Handled = true;

}

private void OnDrop(object sender, Telerik.Windows.DragDrop.DragEventArgs args)

{

System.Diagnostics.Trace.WriteLine(string.Format("{0} - OnDrop sender={1}", DateTime.Now, sender));

((IList)(sender as ListBox).ItemsSource).Add(((DataObject)args.Data).GetData(typeof(Item)));

}

public void OnDragCompleted(object sender, Telerik.Windows.DragDrop.DragDropCompletedEventArgs args)

{

System.Diagnostics.Trace.WriteLine(string.Format("{0} - OnDragCompleted sender={1}", DateTime.Now, sender));

((IList)(sender as ListBox).ItemsSource).Remove(args.Data);

}

public class Item

{

public string Name { get; set; }

}

DragAndDrop

asked on 05 Jun 2012

0 answers

93 views

Limit drop target

I have implemented a basic drag-n-drop using Telerik's new DragDropManager, pretty much the same as instructed here http://www.telerik.com/help/wpf/dragdropmanager-getting-started.html except that I am using ListView instead of ListBox.

Although it works, but I need help on the following two things:

How to I limit the drag-n-drop so that it can only happen between the two listviews? i.e. disallow dropping to the same listview as the drag source.
How to change cursor based on the above criteria? I try to monitor OnGiveFeedback(), but the sender is always the drag source...

DragAndDrop

asked on 05 Jun 2012

0 answers

113 views

Replace GridViewGroupFooterCell

Hi guys,
basically I have a class derived from GridViewGroupFooterCell, and I need to replace GridViewGroupFooterCell with the derived one in the GridView. Do you guys have any idea how I can archive this?

Thanks in advance.

-Henry

GridView

asked on 05 Jun 2012

3 answers

100 views

Frozen groupheaders

Is it possible to 'freeze' the groupheader row?
This way the current group would always be visible while (vertically) scrolling the data in the gridview.

GridView

answered on 05 Jun 2012

1 answer

203 views

Gridview Visiblity based on ComboBox value & Passing Observable Collection as Converter Parameter

Hi,

I have a requirement

Requirement 1# : Inside a Hirerchy Template placed 2 Grids where in

1st grid 3 columns where 1 column has Combo Box loaded with Values.

For ex: Football, Disco

If i select Football, 2 grid placed inside Hirechy Template should be visible or else visbility of that grid should be collapsed.

How can i solve this.

Requirement 2#: Can i pass Observable collection as converter parameter

<Radcombobox selecteditem={Binding collection, converter={}} -> to show as like A,B,C (Selected Items as comma separated)

<controls:RadGridView Name="clubsGrid"

ItemsSource="{Binding Clubs}" Grid.Row="0"

AutoGenerateColumns="False" IsReadOnly="True" SelectionMode="Single" DataContext="{StaticResource MyViewModel}">

<controls:RadGridView.ChildTableDefinitions>

<controls:GridViewTableDefinition/>

</controls:RadGridView.ChildTableDefinitions>

<controls:RadGridView.Columns>

<controls:GridViewDataColumn DataMemberBinding="{Binding Name}"

Header="Est."></controls:GridViewDataColumn>

<controls:GridViewDataColumn DataMemberBinding="{Binding Established}"></controls:GridViewDataColumn>

</controls:RadGridView.Columns>

<controls:RadGridView.HierarchyChildTemplate>

<DataTemplate>

<controls:RadGridView Name="playersGrid"

ItemsSource="{Binding Players}"

AutoGenerateColumns="False" EnableRowVirtualization="False" EnableColumnVirtualization="False"

> 

                                        <controls:RadGridView.ChildTableDefinitions> 
                <controls:GridViewTableDefinition/> 
            </controls:RadGridView.ChildTableDefinitions>

<controls:RadGridView.Columns>

<controls:GridViewDataColumn DataMemberBinding="{Binding Name}">

</controls:GridViewDataColumn>

<controls:GridViewDataColumn DataMemberBinding="{Binding SelectedItem.Name}">

<controls:GridViewDataColumn.CellEditTemplate>

<DataTemplate>

<RadControls:RadComboBox ItemsSource="{Binding Hobbies, Mode=OneTime}" SelectedItem="{Binding SelectedItem,Mode=TwoWay}" SelectedValue="Name" DisplayMemberPath="Name" >

</RadControls:RadComboBox>

</DataTemplate>

</controls:GridViewDataColumn.CellEditTemplate>

</controls:GridViewDataColumn

</controls:RadGridView.Columns

> 

                                    
<
 
 
telerik:RadGridView.HierarchyChildTemplate>
 
 
 
 
<HierarchicalDataTemplate>
 


                                    <controls:RadGridView Name="Hobbies" 
                                     ItemsSource="{Binding Hobbies}" 
                                     AutoGenerateColumns="True" EnableRowVirtualization="False" EnableColumnVirtualization="False"/>

</controls:RadGridView

> 

</
 
 
HierarchicalDataTemplate>
 
 
 
 
</telerik:RadGridView.HierarchyChildTemplate>

</DataTemplate>

</controls:RadGridView.HierarchyChildTemplate>

</controls:RadGridView>

GridView

answered on 05 Jun 2012

1 answer

114 views

FilterDialog under grid

I,

in my project I use Telerik V2010.3.1314.35 and with my RadGridView, when I click on the filter icon in a column header, sometime the filter dialog appear behind the grid ?!?

Thank's

GridView

answered on 05 Jun 2012

2 answers

199 views

[Solved] Custom Dialog Underneath ToolWindows

I have created a custom popup user control. This control covers the entire application with a gray semi-transparent overlay with a message in the middle.

I add the control like this which makes it the last control in the grid and putting it on top of all other objects.

Grid mainGrid = (Grid)App.Current.MainWindow.Content;

mainGrid.Children.Insert(mainGrid.Children.Count, this);

I have a docking control in this grid and as long as everything is docked the overlay works great. However, as soon as I pull one of the RadPanes into a separate ToolWindow that tool window is always on top of my overlay user control. Is there anyway to do an overlay that would be on top of the ToolWindow as well?

Docking

answered on 04 Jun 2012

1 answer

568 views

RadPane not garbage collected when closed

I have a project where I programmatically create and add RadPanes to a RadDocking control. When the user closes the RadPane it doesn't get garbage collected.

I'm using Redgate's ANTS Memory Profiler to confirm this, and I can see RadDocking control maintains an array of EffectiveValueEntrys which stop the GC collecting the RadPane.

I've seen this thread : http://www.telerik.com/community/forums/wpf/docking/why-not-dispose-of-radpanes-memory-leak-issue.aspx and have implemented the solution (RemoveFromParent and e.Handled = true), but this still doesn't solve the problem (it does solve another issue we were having so I still need that code in there).

The RadPane is created

var pane = new RadPane();

var paneGroup = new RadPaneGroup();

paneGroup.Items.Add(pane);

var splitContainer = new RadSplitContainer();

splitContainer.Items.Add(paneGroup);

this.dockingControl.Items.Add(splitContainer);

pane.MakeFloatingDockable();

I've attached a screenshot of the ANTS profiler Retention Graph for the RadPane. I'm unable to attach a zip file containing a sample project which shows the problem (although you'll need to be running a memory profiler to see the bug), as I can only upload (gif, jpg, jpeg or png) but I have it ready to upload if there is an alternative upload facility.

Could you please advise me on how to fix this problem. Is this a known bug, or am I simply creating/destroying the pane incorrectly?

Kind regards,

Rich Keenan

Docking

answered on 04 Jun 2012

1 answer

188 views

[Solved] Custom Annotation Issue

Hi,

I programmed a custom annotation insertion and, I have an issue when custom annotation's prefix are exported. Here is the fragment of code to make the custom annotation:

Public Class NovoBookMarkRangeStart

Inherits FieldRangeStartBase

Private m_Name As String

Private m_TypeCase As Integer

Private m_BookFormat As String

<XamlSerializable()> _

Public Property BookFormat As String

Get

Return m_BookFormat

End Get

Set(value As String)

m_BookFormat = value

End Set

End Property

<XamlSerializable()> _

Public Property Name() As String

Get

Return m_Name

End Get

Set(value As String)

m_Name = value

End Set

End Property

<XamlSerializable()> _

Public Property TypeCase() As Integer

Get

Return m_TypeCase

End Get

Set(value As Integer)

m_TypeCase = value

End Set

End Property

Public Sub New()

End Sub

Public Sub New(name As String, TypeCase As Integer, Bookformat As String)

Me.TypeCase = TypeCase

Me.Name = name

Me.BookFormat = Bookformat

End Sub

Here is the code to put the annotation in the document :

Private Sub Wpf_NewBookMark(ID As Integer, TypeCase As Integer, BookFormat As String) Handles Wpf.NewBookMark

Dim StartRange As New NovoBookMarkRangeStart(ID.ToString, TypeCase, BookFormat)

Dim EndRange As New NovoBookMarkRangeEnd()

'Caret Position

Dim S As New DocumentPosition(Me.editor.Document.CaretPosition)

Dim E As New DocumentPosition(Me.editor.Document)

EndRange.PairWithStart(StartRange)

'Custom Span

Dim BookMarkSpan As New Span("{" & Id.ToString() & "}")

S.AnchorToCurrentBoxIndex()

editor.InsertInline(StartRange)

editor.InsertInline(BookMarkSpan)

editor.InsertInline(EndRange)

S.RestorePositionFromBoxIndex()

editor.UpdateEditorLayout()

End Sub

So, when I save the document under a .XAML format, the section with the custom annotation does not save the TypeCase value but put the prefix and, the BookFormat prefix is not there at all. On the other hand, the Name prefix is with the good value. Here is a sample fragment :

<t:Section PageMargin="96,96,96,96" PageSize="816,1056">
    <t:Paragraph LineSpacing="1" StyleName="Normal">
      <custom1:NovoBookMarkRangeStart AnnotationID="1" Name="5" TypeCase="0" />
      <t:Span Text="{}{Patient.PostalCode}" />
      <custom1:NovoBookMarkRangeEnd AnnotationID="1" />
    </t:Paragraph>
</t:Section>

So, can you find why the BookFormat prefix and value are not present and, why the the TypeCase value is the wrong one?

Thank a lot,

Patrick

RichTextBox

answered on 04 Jun 2012

1 answer

116 views

Contextual tabs don't resize.

I find that when I decorate a RadRibbonTab with a ContextualGroupName, elements in the tab no longer resize. Is there a known issue with Contextual Tabs that prevents them from resizing as normal RadRibbonTabs do?

RibbonView and RibbonWindow

answered on 04 Jun 2012