Questions on UI for WPF Forum

1 answer

109 views

I found exampale how to add toltip for each column, and it is working fine for me. I just wonder is there any way to define totlip once for whole row and bind with row data?

GridView

answered on 17 Apr 2013

2 answers

226 views

UI/Tree Node doesn't update on TreeListView

Hi all,

I have an application which is using RadTreeListView to bind and display as a tree. The ItemSource is binded from ViewModel with type is RadObservableCollection and declared:

ItemsSource="{Binding HistoryList, Mode=TwoWay,

UpdateSourceTrigger=PropertyChanged,

NotifyOnSourceUpdated=True,

NotifyOnTargetUpdated=True}"

The issue is when I add a new node to HistoryList then call RaisePropertyChange of HistoryList, the UI of RadTreeListView doesn't update even though the data added.

this.HistoryList.Add(treeViewItem);

this.RaisePropertyChanged(x => x.HistoryList);

Then if I use reset() method of RadObservableCollection, the UI is updated but float top the top of view. So the question is how can I handle with it? I mean I wan to keep the state/position of node that I selected.. not jump or float.

This video gets better for you to understand: http://screencast.com/t/iLa3XWsa

Thank you

TreeListView

answered on 17 Apr 2013

4 answers

247 views

RadRibbonComboBox in RibbonView using MVVM

Hello,
I referred to a MVVM RadRibbonView example and I tried to implement RadRibbonComboBox in RibbonView with MVVM method.
But it doesn't work normally.
Please see a attached screenshot image.

I make a DataTemplate as follows.

Case1 -- use RadComboBox in RibbonView



Case 2. use RadRibbonComboBox and RadRibbonComboBoxItem

<DataTemplate x:Key="ComboBoxItemTemplate">
<telerik:RadRibbonComboBoxItem Content="{Binding Text}" />
</DataTemplate>

<DataTemplate x:Key="ComboBoxTemplate">
<telerik:RadRibbonComboBox
ItemsSource="{Binding Items}"
ItemTemplate="{StaticResource ComboBoxItemTemplate}"
SelectedIndex="{Binding SelectedIndex}"/>
</DataTemplate>

RibbonView and RibbonWindow

answered on 16 Apr 2013

3 answers

332 views

DocumentRuler Memory Leak

There appears to be a memory leak when a DocumentRuler is associated to a RadRichTextBox. The following is code for a demo WPF Application project that can demonstrate this issue:

MainWindow.Xaml:

<Window x:Class="RulerMemoryLeakDemo.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">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="25"/>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<StackPanel Grid.Row="0" Orientation="Horizontal">

<Button Click="ButtonBase_OnClick">New Editor</Button>

</StackPanel>

<StackPanel Grid.Row="1" Name="editHost"></StackPanel>

</Grid>

</Window>

MainWindow.xaml.cs:

using System.ComponentModel;

using System.Windows;

namespace RulerMemoryLeakDemo

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window

{

public class EditorViewModel : INotifyPropertyChanged

{

private string _rtf = @"{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Calibri;}}

{\*\generator Msftedit 5.41.21.2510;}\viewkind4\uc1\pard\sa200\sl276\slmult1\lang9\f0\fs22 RTF File - Hello World\par

}";

public string Rtf

{

get { return _rtf; }

set

{

_rtf = value;

OnPropertyChanged("Rtf");

}

public event PropertyChangedEventHandler PropertyChanged;

protected virtual void OnPropertyChanged(string propertyName)

{

var handler = PropertyChanged;

if (handler != null)

handler(this, new PropertyChangedEventArgs(propertyName));

}

public MainWindow()

{

InitializeComponent();

}

private void ButtonBase_OnClick(object sender, RoutedEventArgs e)

{

editHost.Children.Clear();

var viewModel = new EditorViewModel();

var view = new EditorView {DataContext = viewModel};

editHost.Children.Add(view);

}

EditorView.xaml:

<UserControl

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

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

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

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

x:Class="RulerMemoryLeakDemo.EditorView"

mc:Ignorable="d"

d:DesignHeight="300" d:DesignWidth="1000"

FontFamily="Arial" FontSize="11">

<Grid>

<Grid.RowDefinitions>

<RowDefinition Height="*"/>

</Grid.RowDefinitions>

<telerik:DocumentRuler Grid.Row="0" AssociatedRichTextBox="{Binding ElementName=editor, Mode=OneTime}"/>

<telerik:RadRichTextBox x:Name="editor"

Margin="24 24 0 0"

Grid.Row="0"

LayoutMode="Flow"/>

<telerik:RtfDataProvider x:Name="rtfProvider"

RichTextBox="{Binding ElementName=editor}"

Rtf="{Binding Path=Rtf, Mode=TwoWay}" />

</Grid>

</UserControl>

EditorView.xaml.cs:

using System.Windows.Controls;

namespace RulerMemoryLeakDemo

{

public partial class EditorView : UserControl

{

public EditorView()

{

InitializeComponent();

}

The demo app has a button "New Editor" which will create a new usercontrol with a RadRichTextBox and associated DocumentRuler and add it to the main window. If you keep pressing the New Editor button you will see that the memory usage of the application keeps growing. Repeatedly creating new editors on my desktop caused the application memory usage to grow to over 4GB.

However, in EditorView.xaml, if you comment out the DocumentRuler declaration and repeat the test you will find that the memory usage of the application no longer grows unbound. On my desktop the memory usage of the application after commenting out this line stayed under 400MB.

My desktop is running Win 7 x64, though this problem was observed on a number of different systems.

RichTextBox

answered on 16 Apr 2013

1 answer

182 views

Multiple Properties In Group Descriptor

HI,

I was wondering if it was possible to use a combination of properties in GroupDescriptor.

For example:

I have the data set:

new DummyModel { Name = "Bob", Test = "A", Part = "i", Score = 12},

new DummyModel { Name = "Bob", Test = "A", Part = "ii", Score = 11},

new DummyModel { Name = "Bob", Test = "B", Part = "i", Score = 15},

new DummyModel { Name = "Bob", Test = "B", Part = "ii", Score = 16},

new DummyModel { Name = "Sue", Test = "A", Part = "i", Score = 6},

new DummyModel { Name = "Sue", Test = "A", Part = "ii", Score = 14},

new DummyModel { Name = "Sue", Test = "B", Part = "i", Score = 22},

new DummyModel { Name = "Sue", Test = "B", Part = "ii", Score = 18},

I would like to group by Name and Test and show the sum of the two parts (ordered by Name, then Test).

I recently had this working by adding a property to DummyModel that had both a Name and Test Properties and implemented IComparable and overwrote Equals and GetHashCode which allowed the grouping and sorting as I desired.I used this property as the Member property of the GroupDescriptor.

However this stopped working when we upgraded to v4.0.30319.

Any help on this issue would be greatly appreciated.

Thanks,

Steven

GridView

answered on 16 Apr 2013

3 answers

171 views

DragVisualProvider mouse visual offset

Hello,

I'm using a custom DragVisualProvider with the ListBoxDragDropBehavior and I can't seem to figure out how to offset the mouse position within the dragVisual. I know you can get the RelativeStartPoint from DragVisualProviderState, but how do you set that on the newly created dragVisual (ContentControl, in this case).

Here is my custom DragVisualProvider code:

public FrameworkElement CreateDragVisual(DragVisualProviderState state)

{

var visual = new ContentControl();

var theme = StyleManager.GetTheme(state.Host);

if (theme != null)

{

StyleManager.SetTheme(visual, theme);

}

var draggedItem = state.DraggedItemContainers.First() as FrameworkElement;

visual.Height = draggedItem.ActualHeight;

visual.Width = draggedItem.ActualWidth;

visual.Content = state.DraggedItems.OfType<object>().FirstOrDefault();

visual.ContentTemplate = this.DragVisualTemplate;

return visual;

}

Thanks in advance

ListBox

answered on 16 Apr 2013

3 answers

590 views

Clicking menu item does not close menu

Hey there. I have a project with a RadMenu and it's menu Items are defined like so:

<Style x:Key="MenuItemBaseStyle" TargetType="telerik:RadMenuItem">
<Setter Property="Header" Value="{Binding Content}" />
<Setter Property="IsSeparator" Value="{Binding IsSeparator}" />
<Setter Property="ItemsSource" Value="{Binding}" />
</Style>

<Style x:Key="MenuItemLinkStyle" TargetType="telerik:RadMenuItem" BasedOn="{StaticResource MenuItemBaseStyle}">
<Setter Property="Template" Value="{StaticResource MenuItemLinkControlTemplate}" />
<Setter Property="Margin" Value="4 3 4 2" />
</Style>

And the Template is defined:

<ControlTemplate x:Key="MenuItemLinkControlTemplate" TargetType="telerik:RadMenuItem">
<StackPanel>
<Button Click="ButtonBase_OnClick" Content="{Binding Content}" Style="{StaticResource LinkButtonMenu}" />
</StackPanel>
</ControlTemplate>

I know it looks weird that It's a button, but there's a very specific reason we're doing that due to some issues we had after the last release. It was working fine prior to having to change it and I need it to work with the current Template I have defined for it. I tried setting the StaysOpenOnClick property to false in the style as well and the issue still persisted. Thanks in advanced for the help.

Menu

answered on 16 Apr 2013

1 answer

184 views

Custom sorting

Hi,

i want to order my columns in a custom way ("B", "A", "C" for example) Is this possible?

Best Regards,
Thomas

PivotGrid

answered on 16 Apr 2013

0 answers

90 views

Exception in CurrentCellValidating

Hi Experts,

I am doing validation using CurrentCellvalidating event and by using CellEditEnded event i am reloading my Grid's Itemsource. At that time the CurrentCellValidating event gets fired and also the CellEditEnded event gets called once again(both the events are fired 2 times) and after the execution of these events i am getting an null reference exception.

Note: If i didnt reload the Grid ItemSource(Applying new values) then the exception is not occuring.

Please help me anybody, what is going wrong.

Ramesh,
velusamyr@hcl.com

GridView

asked on 16 Apr 2013

3 answers

241 views

ChartView Trackball

Hi Support Team,

I am showing two series data in chartview.I want to show trackball to only one series.
How can i hide the trackball to other(second) series.

Please find attached screenshot for your reference.

Thanks&Regards
Obalesu.N

ChartView

answered on 16 Apr 2013