Questions on UI for WPF Forum

1 answer

96 views

Is there a control like a split button (button+menu) for use with the RadRibbonView? I am using the RadRibbonButtons of course, but one of them I would like to use as a split button and drop down a menu. Thank you...

Buttons

answered on 15 Jun 2013

9 answers

322 views

RadGridView shows incorrect data from ObservableCollection

I have a RadGridView bound to ObservableCollection. This collection is constantly updated and on first binding the grid represent the data correctly. But then I click on one of the headers to sort the data in the grid. After that behaviors on adding a new row become as following:
- the grid adds the row to the end of the list only, it doesn't sort data dynamically according sorting column;
- sometimes (often) the grid creates duplicate rows while underlying collection contains correct data;

I couldn't find in documentation any info that I should programmatically sort underlying collection each time after adding row or rebind it every time so the grid shows it correctly. What should I do to fix it or it\s a norm for Telerik Grid?

GridView

answered on 14 Jun 2013

0 answers

63 views

D&D combined with new Dialog freezes drag source application

Hi.

We have an implementation of Drag&Drop of items from outlook to a treeview using the telerik DragDropManager.

xaml code:

<telerik:RadTreeView ItemPrepared="OnItemPrepared" .../>

code-behind:

protected void OnItemPrepared(object sender, RadTreeViewItemPreparedEventArgs e)

{

if (e.PreparedItem.AllowDrop)

{

e.PreparedItem.DragEnter += OnPreparedItemDragEnter;

e.PreparedItem.Drop += OnPreparedItemDrop;

}

We then have a function : OnPreparedItemDrop(object sender, DragEventArgs args)
...Where I want to launch a new dialog and add some metadata to the files dragged in.

When using a dialog.ShowDialog() the calling thread here freezes. This causes the source application(outlook) to be completely unresponsible until my dialog has been closed and the function returns. It also leaves the mouse cursor in "drag-drop" mode when hovering stuff outside my application.

I am fond of this style of opening and handlign dialog outputs:

if(dialog.ShowDialog == true)

{

DoSomething();

}

DoCleanup();

The alternative I see at the moment is to add logic to the view cancel/close events to do cleanup, or mess with the dispatcher and threading. What is the proper approach here?

DragAndDrop

asked on 14 Jun 2013

1 answer

129 views

Chart Sum Function in BarSeries

Hello,

I'm implementing a RadCartesianChart with dynamic ChartDataSource and data sampling.
Everything's fine but I'd like to sample via a sum function and not via the default average one.
So I created a new SumBarSeries which inherits from BarSeries as shown below :

public class SumBarSeries : BarSeries
{
    protected override ChartAggregateFunction GetValueAggregateFunction()
    {
        return new ChartSumFunction();
    }
}

There's a min, max, average, keepextremes, first and last function but no sum function.
Is there a simple way to add such a function?
Furthermore is it possible to change dynamically the sampling function just like the old RadCharts without changing the BarSeries class (ie. SumBarSeries)?

Thanks,

Michel LACOMBE

Chart

answered on 14 Jun 2013

3 answers

162 views

Columns are gone if reordering upon reload.

Hi,

I've been experimenting a little with the PersistenceFramework over the course of the day and I've found some, according to me,
mystic behaviour.

When the window containing my RadGridView closes I run this code:

var manager = new PersistenceManager();

var stream = manager.Save(dgOrderOverview);

using (var fileStream = File.Create(System.AppDomain.CurrentDomain.BaseDirectory + "\\objstore.hf"))

{

stream.CopyTo(fileStream);

}

and when I open it up again the following code is run:

//Check if any persistence file exists, and if so, load the view

if (File.Exists(System.AppDomain.CurrentDomain.BaseDirectory + "\\objstore.hf"))

{

var manager = new PersistenceManager();

try

{

var fileStream = File.OpenRead(System.AppDomain.CurrentDomain.BaseDirectory + "\\objstore.hf");

manager.Load(dgOrderOverview, fileStream);

fileStream.Close();

}

catch (Exception ex)

{

System.Diagnostics.Debug.WriteLine(ex.Message, "MYAPPNAME");

}

//Load Context Menu

RadContextMenu ctxMenu = new RadContextMenu();

RadMenuItem item = new RadMenuItem();

foreach (Telerik.Windows.Controls.GridViewColumn column in dgOrderOverview.Columns)

{

RadMenuItem sitem = new RadMenuItem() { Header = column.Header, IsCheckable = true, IsChecked = true };

sitem.SetBinding(RadMenuItem.IsCheckedProperty, new Binding("IsVisible") { Mode = BindingMode.TwoWay, Source = column });

ctxMenu.Items.Add(sitem);

}

RadContextMenu.SetContextMenu(dgOrderOverview, ctxMenu);

For the sake of things it should be noted that I have a RadContextMenu loading in order to be able to show/hide columns in the RadGridView.

Now, here's to the tricky bit, I have a RadContextMenu where the user can set the visibility of the columns, and IF the user ONLY uses this, everything is fine and dandy, visibility properties as set as they should upon reload. However IF the user decides to rearrange the columns, the next time he/she opens up the window, ALL columns are gone, there's NOTHING there at all.

So in short:
* Show / Hide columns using the RadContextMenu bound to the RadGridView works fine, persistence is kept and loads nicely.
* Rearrange columns and the persistence is broken and no columns as viewable upon opening the window.

As a little twist, the columns are all visible in the ContextMenu and their visibility are set as they should, but the GridView doesn't display them.

A little help, please?

P.S
I run the following version of the Telerik components:
RadControls_for_WPF_2013_1_0527_DEV_hotfix
D.S

PersistenceFramework

answered on 14 Jun 2013

1 answer

55 views

Demo 2013 Q2 Issue Style Changing

Hi,

Demo 2013 Q2 Final Issue Style Changing Touch Demo to Default, This Issue does not exist Demo 2013 Q2 Beta, Please see screenshot.
OS : Windows 8 x64

Thanks.

General Discussions

answered on 14 Jun 2013

2 answers

251 views

RadListbox SelectedItem 0 not work

Hi,

I'm Synchronization RadListbox and RadDataForm SelectedItem 0 not highlight i'm trying MS ListBox not problem.

Thanks.

<telerik:RadDataForm x:Name="dataForm" ItemsSource="{Binding Items}"/>

<telerik:RadListBox x:Name="ListBox" ItemsSource="{Binding Items}" SelectedIndex="0" />

private ICollectionView _items;

public ICollectionView Items

{

get

{

if (_items== null)

{

Items = new QueryableCollectionView(new ObservableCollection<Contact>(RepositoryBase.Context.Contacts));

}

return _items;

}

set

{

if (Equals(value, _items)) return;

_items= value;

NotifyOfPropertyChange(() => Items);

}

ListBox

answered on 14 Jun 2013

1 answer

107 views

Scroll panels automatically ?

Hello,
Is it possible to scroll panels automatically ? I mean, for example, it changes panel every 10 seconds.

Thanks.

PanelBar

answered on 14 Jun 2013

6 answers

419 views

Select row on context menu

Hi,

Is it possible to select the row in a grid when a context menu is opened by right clicking on that row?

GridView

answered on 14 Jun 2013

2 answers

71 views

Hightlighting items in RadPanelBar by tabbing to item

Hi,

I'm trying to figure out how to have individual RadPanelBarItems have their background colors changed when a user tabs through the RadPanelBar. Currently when a user selects (left mouse click) a specific RadPanelBarItem, the color changes to orange (the default color); I want to be able to do the same if the user tabs to the item as well. The usage of IsTabStop and TabStop does not seem to work; I could perhaps be setting it incorrectly.   The following is a code snippet of xaml implementation:

<telerikNavigation:RadPanelBar IsTabStop="True" Grid.Row="0" Grid.Column="0" Grid.RowSpan="2" VerticalAlignment="Stretch" x:Name="SummaryMenu" HorizontalAlignment="Stretch" Margin="0,-1,0,-1">

                    <telerikNavigation:RadPanelBar.Background>
                        <ImageBrush ImageSource="pack://application:,,,/Resources/Images/Left-Menu-Back.png" />
                    </telerikNavigation:RadPanelBar.Background>

                    <telerikNavigation:RadPanelBarItem IsExpanded="True" IsTabStop="True" BorderThickness="0">
                            <telerikNavigation:RadPanelBarItem.Header>
                                <TextBlock Text="VIEWS" Style="{StaticResource SmallMenuHeaderIconLabel}" />
                            </telerikNavigation:RadPanelBarItem.Header>

                        <telerikNavigation:RadPanelBarItem IsTabStop="True" TabIndex="1" MouseLeftButtonDown="SummaryMenuDockingItemLeftButtonDownClick" MouseLeftButtonUp="SummaryMenuDockingItemLeftButtonUpClick" Keyboard.KeyUp="OnKeyPressEnterViewsMenuItem" Tag="MainViewLogicalConfiguration" IsSelected="True">
                                <telerikNavigation:RadPanelBarItem.Header>
                                    <StackPanel Orientation="Vertical">
                                        <Image Source="/Resources/Images/MenuIcons/MainView.png" ToolTip="Main" Style="{StaticResource SmallMenuIcon}"/>
                                        <TextBlock Text="Main" Style="{StaticResource SmallMenuIconLabel}" />
                                    </StackPanel>
                                </telerikNavigation:RadPanelBarItem.Header>
                            </telerikNavigation:RadPanelBarItem>

                        <telerikNavigation:RadPanelBarItem IsTabStop="True" TabIndex="2" MouseLeftButtonDown="SummaryMenuDockingItemLeftButtonDownClick" MouseLeftButtonUp="SummaryMenuDockingItemLeftButtonUpClick" Keyboard.KeyUp="OnKeyPressEnterViewsMenuItem" Tag="PhysicalLayout" >
                                <telerikNavigation:RadPanelBarItem.Header>
                                    <StackPanel Orientation="Vertical">
                                        <Image Source="/Resources/Images/MenuIcons/Physical-Configuration.png" ToolTip="Physical Configuration" Style="{StaticResource SmallMenuIcon}"/>
                                        <TextBlock Text="Physical Configuration" Style="{StaticResource SmallMenuIconLabel}" />
                                    </StackPanel>
                                </telerikNavigation:RadPanelBarItem.Header>
                            </telerikNavigation:RadPanelBarItem>
                        ......
                        ......
               </<telerikNavigation:RadPanelBar>

Thanks for the help,
Robert Quan

General Discussions

answered on 13 Jun 2013