Questions on UI for WPF Forum

7 answers

187 views

Hello,

I'm having trouble with the RadDragAndDropManager when the UserControl that is using it is being hosted inside of a Windows Form. I made a quick example.

    
            <UserControl x:Class="DragAndDropTest.simple" 
        
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
        
                xmlns:dragDrop="clr-namespace:Telerik.Windows.Controls.DragDrop;assembly=Telerik.Windows.Controls"> 
        
                <UserControl.Resources> 
        
                    <Style TargetType="StackPanel"> 
        
                        <Setter Property="dragDrop:RadDragAndDropManager.AllowDrop" Value="True" /> 
        
                    </Style> 
        
                    <Style TargetType="Label"> 
        
                        <Setter Property="dragDrop:RadDragAndDropManager.AllowDrag" Value="True" /> 
        
                    </Style> 
        
                </UserControl.Resources> 
        
                <Grid> 
        
                    <Grid.ColumnDefinitions> 
        
                        <ColumnDefinition /> 
        
                        <ColumnDefinition /> 
        
                    </Grid.ColumnDefinitions> 
        
                    <StackPanel 
        
                        Name="Stack1" 
        
                        Grid.Column="0"> 
        
                        <Label Name="lbl1" Background="Green" /> 
        
                    </StackPanel> 
        
                    <StackPanel  
        
                        Name="Stack2" 
        
                        Grid.Column="1"> 
        
                        <Label Name="lbl2" Background="Red" /> 
        
                    </StackPanel> 
        
                </Grid> 
        
            </UserControl>

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows; 
        
            using System.Windows.Controls; 
        
            using System.Windows.Data; 
        
            using System.Windows.Documents; 
        
            using System.Windows.Input; 
        
            using System.Windows.Media; 
        
            using System.Windows.Media.Imaging; 
        
            using System.Windows.Navigation; 
        
            using System.Windows.Shapes; 
        
            using Telerik.Windows.Controls.DragDrop; 
        
            namespace DragAndDropTest 
        
            { 
        
                /// <summary> 
        
                /// Interaction logic for simple.xaml 
        
                /// </summary> 
        
                public partial class simple : UserControl 
        
                { 
        
                    public simple() 
        
                    { 
        
                        InitializeComponent(); 
        
                        RadDragAndDropManager.AddDragInfoHandler(lbl1, OnDragInfo); 
        
                        RadDragAndDropManager.AddDragQueryHandler(lbl1, OnDragQuery); 
        
                        RadDragAndDropManager.AddDragInfoHandler(lbl2, OnDragInfo); 
        
                        RadDragAndDropManager.AddDragQueryHandler(lbl2, OnDragQuery); 
        
                        RadDragAndDropManager.AddDropInfoHandler(Stack1, OnDropInfo); 
        
                        RadDragAndDropManager.AddDropQueryHandler(Stack1, OnDropQuery); 
        
                        RadDragAndDropManager.AddDropInfoHandler(Stack2, OnDropInfo); 
        
                        RadDragAndDropManager.AddDropQueryHandler(Stack2, OnDropQuery); 
        
                    } 
        
                    private void OnDropQuery(object sender, DragDropQueryEventArgs e) 
        
                    { 
        
                        e.QueryResult = true; 
        
                        e.Handled = true; 
        
                    } 
        
                    private void OnDropInfo(object sender, DragDropEventArgs e) 
        
                    { 
        
                        if (e.Options.Status == DragStatus.DropComplete) 
        
                        { 
        
                            ((e.Options.Source as Label).Parent as StackPanel).Children.Remove(e.Options.Source); 
        
                            (sender as StackPanel).Children.Add(e.Options.Source); 
        
                        } 
        
                    } 
        
                    private void OnDragInfo(object sender, DragDropEventArgs e) 
        
                    { 
        
                        Label item = sender as Label; 
        
                        if (e.Options.Status == DragStatus.DragInProgress) 
        
                        { 
        
                                ContentControl cue = new ContentControl(); 
        
                                cue.Content = new Label() { Background = item.Background }; 
        
                                e.Options.DragCue = cue; 
        
                                e.Options.ArrowCue = RadDragAndDropManager.GenerateArrowCue(); 
        
                        } 
        
                    } 
        
                    private void OnDragQuery(object sender, DragDropQueryEventArgs e) 
        
                    { 
        
                        e.Options.Payload = sender; 
        
                        e.QueryResult = true; 
        
                        e.Handled = true; 
        
                    } 
        
                } 
        
            }

    
            using System; 
        
            using System.Collections.Generic; 
        
            using System.ComponentModel; 
        
            using System.Data; 
        
            using System.Drawing; 
        
            using System.Linq; 
        
            using System.Text; 
        
            using System.Windows.Forms; 
        
            namespace DragAndDropTest  
        
            { 
        
                public partial class Form1 : Form 
        
                { 
        
                    public Form1() 
        
                    { 
        
                        InitializeComponent(); 
        
                        elementHost1.Child = new simple(); 
        
                    } 
        
                } 
        
            }

seems to work fine inside of a wpf Window but not a Form.
Any ideas on what I'm doing wrong?

Thanks much,
~Boots

DragAndDrop

answered on 27 Jul 2010

1 answer

239 views

ShowDialog ();

Im Using a showDialog(); for show my Window and i want to show it in a taskbar

can help ?

Window

answered on 27 Jul 2010

1 answer

278 views

Can Show Rad Window in Task Bar

I Run a Rad window , I want to show it in a Task Bar Can Do it

Window

answered on 27 Jul 2010

3 answers

168 views

How to change the chart item ControlTemplate?

Hello,

in the ChartControl-Help I found this hint to increase charting performace:

Simplify the chart item ControlTemplate - e.g. the Line item template contains by default an item label and a point mark visual. The point mark visual can be removed (as they are relatively insignificant when rendering thousands of records). With lots of points the sheer number of UI elements simply bogs the system down as discussed above). So if you cannot reduce the data points, you will need to simplify the chart item ControlTemplate.

Can anybody give me an example how to do this?

Chart

answered on 26 Jul 2010

1 answer

80 views

radApplication menu items shortcut keys

Hi,
Iam unable to find the way to put Shortcut keys for rad application menu items,like we are implementing for radmenu.
tell me the solution for this asap.
Thanks in advance.

General Discussions

answered on 26 Jul 2010

7 answers

311 views

Latest example of Grid to Grid Drag Drop

Could someone please post a link to the latest example of Grid to Grid drag drop. I've searched and downloaded what seems to be 3 different versions none of which I can get to work. I'm attempting to get sample running on Microsoft Visual C# 2010 and .net4. Any help is GREATLY appreciated.

DragAndDrop

answered on 26 Jul 2010

1 answer

163 views

SelectedItem Binding OneWayToSource tries to get the property value

Hi,

I have a combobox in my application that has this binding on the SelectedItem

SelectedItem="{Binding Path=Food, Mode=OneWayToSource}">

The back end property is define as follows

public Food Food

{

get { return _food; }

set { _food = value; }

}

My problem is that the above binding will try to get the property, this is not the expected behavior for this type of binding.
Can you suggest a work around you come up with fix ?

Thank you,

ComboBox

answered on 26 Jul 2010

5 answers

272 views

Quick Start Framework for WPF

Do you plan on publishing something like this that you did for WinForms? Or at least release all of the code used in the demos? I see others are asking the same thing too.

Thanks!

General Discussions

answered on 26 Jul 2010

1 answer

122 views

calendar doesn't display

Hi,

Version : 2010 Q2 - 2010.2.714.35

Hi,

I have a WPF application (.net 3.5) with MVP pattern and the Microsoft Unity container.
When i add a RadDatePicker in a view, there is a drop down problem :
the calendar doesn't appear and other controls have a similar behavior : for the original ComboBox, the drop down list don't display.
Without RadDatePicker, all controls appear correctly.
(With the version 2010.1.422.35, it work.)

I don't have this problem in a classic WPF application (without MVP neither Unity).

Otherwise, in the Visual Studio out, an error occurs many time :

System.Windows.Data Error: 4 : Cannot find source for binding with reference 'ElementName=PART_DropDownButton'. BindingExpression:Path=IsMouseOver; DataItem=null; target element is 'ButtonChrome' (Name='ButtonChrome'); target property is 'RenderMouseOver' (type 'Boolean')

I try to catch this error with a diagnostic converter (System.Diagnostics) :
<Style TargetType="{x:Type telerik:RadDatePicker}">
<Setter Property="???" Value="{Binding Path=???, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}, diagnostics:PresentationTraceSources.TraceLevel=High}"/>
</Style>

But i don't found interesting property to watch in order to have more details.

Thanks in advance

DatePicker

answered on 26 Jul 2010

2 answers

173 views

Applying ControlTemplate to RadCarousel

Having a little problem when I try to apply a control template to the rad carousel, in that as soon as I put in the binding to the template, the carousel no longer displays any items.

Here is the code for the carousel:

<Border

ClipToBounds="True"

Grid.Column="1"

Grid.RowSpan="4"

Grid.ColumnSpan="2"

Grid.Row="0"

VerticalAlignment="Top"

Margin="0,40,10,0"

HorizontalAlignment="Right"

x:Name="carFav"

Height="70px"

Width="500px"

Visibility="Collapsed">

<telerik:RadCarousel

x:Name="Favorites"

AutoGenerateDataPresenters="False"

HorizontalScrollBarVisibility="Hidden"

VerticalContentAlignment="Bottom"

Template="{StaticResource FavouritesCarousel}">

<telerik:RadCarousel.Background>

<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">

<GradientStop Color="#FF7D7D7D" Offset="0.164"/>

<GradientStop Color="White" Offset="0.093"/>

</LinearGradientBrush>

</telerik:RadCarousel.Background>

<telerik:RadCarousel.ReflectionSettings>

<telerik:ReflectionSettings Visibility="Visible" OffsetY="3"/>

</telerik:RadCarousel.ReflectionSettings>

</telerik:RadCarousel>

</Border>

And the control template code:

<ControlTemplate x:Key="FavouritesCarousel" TargetType="{x:Type telerik2:RadCarousel}">

<Grid>

<ScrollViewer

x:Name="CarouselContentPresenter"

CanContentScroll="True"

HorizontalAlignment="Stretch"

VerticalAlignment="Stretch"

Background="Gray"

HorizontalScrollBarVisibility=

"{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type telerik2:RadCarousel}}, Path=HorizontalScrollBarVisibility}"

VerticalScrollBarVisibility=

"{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type telerik2:RadCarousel}}, Path=VerticalScrollBarVisibility}"

>

<ItemsPresenter

x:Name="ItemsPresenter"

HorizontalAlignment="Stretch"

VerticalAlignment="Stretch"/>

</ScrollViewer>

</Grid>

</ControlTemplate>

Any suggestions? Thanks.

Carousel

answered on 26 Jul 2010