WPF Discussion Boards

MenuItems not showing properly

15-Oct-09 8:04

See this discussion: DashStyles.Dot Bug?[^]

(try changing your DashCap to Square or Round)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Control Limitation

Saiyed Alam14-Oct-09 18:39

Saiyed Alam

14-Oct-09 18:39

Hello Friends,
Is there any limitation on the number of controls that can be used in a single wpf window?

Thanking in advance

Johnny

Re: Control Limitation

Ian Shlasko15-Oct-09 3:47

Ian Shlasko

15-Oct-09 3:47

I don't think there's been a control count limit since we all escaped from VB6, and even there it was possible to get around it with control arrays.

So basically, you're limited by your computer and your patience, because the more controls you have, the longer it'll take to render.

Proud to have finally moved to the A-Ark. Which one are you in?
Developer, Author (Guardians of Xen)

Shelby Robertson 14-Oct-09 4:56

14-Oct-09 4:56

I'm working on learning WPF, and I'm having an issue with my menu. The menu displays fine but when I click on a root level item, the sub menu does not appear to drop down. It still appears that I can click on where the menu item should be, and it will fire the proper event. Is there something common errors that cause this or do i need to post some source code because I'm doing something dumb?

Thanks.

Ennis Ray Lynch, Jr. wrote:
Unpaid overtime is slavery.

Trollslayer wrote:
Meetings - where minutes are taken and hours are lost.

Mark Salsbery14-Oct-09 7:51

14-Oct-09 7:51

Shelby Robetson wrote:
do i need to post some source code

The sample code in the WPF SDK[^] works fine for me...

What are you doing different?

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Shelby Robertson 14-Oct-09 8:00

14-Oct-09 8:00

In terms of the menu itself, I'm not doing anything differently. I'll post the source when I get home this evening.

Ennis Ray Lynch, Jr. wrote:
Unpaid overtime is slavery.

Trollslayer wrote:
Meetings - where minutes are taken and hours are lost.

Shelby Robertson 14-Oct-09 13:12

14-Oct-09 13:12

<Window x:Class="Test.Main"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Test" Height="500" Width="700" ResizeMode="CanResizeWithGrip" Name="MainWindow"  
    WindowStyle="None" AllowsTransparency="True"
    Background="Transparent" BorderThickness="0" FrameworkElement.Loaded="MainWindow_Loaded" FrameworkElement.SizeChanged="Window_SizeChanged" >
    <Window.Resources>

    <DrawingBrush x:Key="yellowBackground">
        <DrawingBrush.Drawing>
            <DrawingGroup>
                <GeometryDrawing>
                    <GeometryDrawing.Brush>
                        <RadialGradientBrush Center="0.54326,0.45465" RadiusX="0.402049" RadiusY="1.02049" GradientOrigin="0.4326,0.45465">
                            <GradientStop Color="#ffffe1" Offset="0"/>
                            <GradientStop Color="#f8e737" Offset="0.461"/>
                            <GradientStop Color="#e79b00" Offset="1"/>
                        </RadialGradientBrush>
                    </GeometryDrawing.Brush>
                    <GeometryDrawing.Geometry>
                        <RectangleGeometry Rect="0,0 1,1" />
                    </GeometryDrawing.Geometry>
                </GeometryDrawing>
                <GeometryDrawing>
                    <GeometryDrawing.Brush>
                        <LinearGradientBrush StartPoint="0,0" EndPoint="0,1" SpreadMethod="Pad">
                            <GradientStop Color="#FFFFFFFF" Offset="0"/>
                            <GradientStop Color="#39FFFFFF" Offset="1"/>
                        </LinearGradientBrush>
                    </GeometryDrawing.Brush>
                    <GeometryDrawing.Geometry>
                        <RectangleGeometry Rect="0,0 1,1" />
                    </GeometryDrawing.Geometry>
                </GeometryDrawing>
            </DrawingGroup>
        </DrawingBrush.Drawing>
    </DrawingBrush>
    
    </Window.Resources>
    
    <Border Background="LightSteelBlue" CornerRadius="20,20,20,20">
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" MinHeight="44.149" />
                <RowDefinition Height="*"/>
                <RowDefinition Height="150" MinHeight="20px"/>
            </Grid.RowDefinitions>
            <Border Height="44" VerticalAlignment="Top" CornerRadius="20,20,0,0" Background="{StaticResource yellowBackground}" Grid.Row="0">
                <StackPanel Height="44"  VerticalAlignment="Top"  Orientation="Vertical">
                    <Canvas Height="22" Background="Transparent" Name="TitleCanvas" PreviewMouseLeftButtonDown="DragWindow">
                        <Label FontWeight="Bold" FontFamily="Elephant" FontStyle="Italic" HorizontalAlignment="Left" Grid.Column="0">Test Title</Label>
                    </Canvas>
                    <Menu Height="22" Background="Transparent" BorderThickness="0" >
                        <MenuItem Header="File">
                            <MenuItem Header="Exit" Click="Exit_Click" />
                        </MenuItem>
                        <MenuItem Header="Help">
                            <MenuItem Header="About..." />
                        </MenuItem>
                    </Menu>
                </StackPanel>
            </Border>
            <Grid Grid.Row="1">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="200" MinWidth="25" MaxWidth="{Binding ElementName=MainWindow, Path=ActualWidth}"/>
                    <ColumnDefinition Width="*" MinWidth="25"/>
                </Grid.ColumnDefinitions>
                <StackPanel Grid.Column="0" x:Name="NavPanel">
                    <TreeView x:Name="NavTree" Background="Transparent" Height="{Binding ElementName=NavPanel, Path=ActualHeight}" BorderThickness="0"></TreeView>
                </StackPanel>
                <GridSplitter Width="3px"></GridSplitter>
                <StackPanel x:Name="lvPanel" Grid.Column="1" Background="Transparent">
                    <ListView Name="listView1" Width="{Binding ElementName=lvPanel, Path=ActualWidth}" Height="{Binding ElementName=lvPanel, Path=ActualHeight}" BorderThickness="0" Background="Transparent"/>
                </StackPanel>
            </Grid>
            <GridSplitter Grid.Row="2" ResizeDirection="Rows"
                    Grid.ColumnSpan="2"
                    HorizontalAlignment="Stretch"
                    VerticalAlignment="Top"
                    Height="3px"/>
        </Grid>
    </Border>
</Window>

Ennis Ray Lynch, Jr. wrote:
Unpaid overtime is slavery.

Trollslayer wrote:
Meetings - where minutes are taken and hours are lost.

Mark Salsbery15-Oct-09 7:14

15-Oct-09 7:14

Menu items show up fine here...

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Shelby Robertson 15-Oct-09 7:16

Progress bar on loading a page

15-Oct-09 7:16

Thanks for the help. I've got it working also, it appears the solution was "restart visual studio". I made no changes since the time I posted the initial question and it just works.

Ennis Ray Lynch, Jr. wrote:
Unpaid overtime is slavery.

Trollslayer wrote:
Meetings - where minutes are taken and hours are lost.

TreeView Parent Control

Adriaan Davel14-Oct-09 1:55

Adriaan Davel

14-Oct-09 1:55

Hi,

I need to find the binding control of my TreeViewItem's parent, GetContainerFromItem gives me the parent TreeViewItem and GetParent gives me the Parent Item, but how do I get the control that is bound to the parent Item?

I'm using a custom control to display the items, and need to manipulate it from a child control...

____________________________________________________________
Be brave little warrior, be VERY brave

ravi.vellanky13-Oct-09 20:13

ravi.vellanky

13-Oct-09 20:13

Hi,

In my silverlight application I've many pages(1,2,3...), after logged in i'm showing default page. After that if i click on any page default loading (silverlight progress like rotating a default logo with continual increment of time) is going on.

Next if i click on the any other page of same page that silverlight progress is not showing. My silverlight pages have huge data, so for loading the data it takes time to show any page without showing any progress.

I need to show any progress bar on loading the data.... is it possible to show the progress bar in all pages while loading?

Regards,

Ravi Vellanki.

Mark Salsbery14-Oct-09 7:39

14-Oct-09 7:39

ravi.vellanky wrote:
is it possible to show the progress bar in all pages while loading?

Yes.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

ravi.vellanky14-Oct-09 18:21

ravi.vellanky

14-Oct-09 18:21

Can you tell me how can i achieve this?

Mark Salsbery15-Oct-09 6:57

15-Oct-09 6:57

What part are you having trouble with?

Data loading is asynchronous in Silverlight so you can
display a progress control at the start of the download
and remove the progress control when the download completes.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

ravi.vellanky19-Oct-09 18:43

ravi.vellanky

19-Oct-09 18:43

Can you give me any sample application link on this progress bar?

Mark Salsbery20-Oct-09 6:26

Silverlight Background color problem

20-Oct-09 6:26

Have you looked at the documentation?

ProgressBar Class[^]

1) Before you request data, show a ProgressBar.
2) If you're using a data retrieval method that reports download status, update the ProgressBar.
If no download status is available, you could set the ProgressBar's IsIndeterminate property to True.
3) When the data is received, hide and/or remove the ProgressBar.

Again - what part are you having trouble with?

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Blikkies13-Oct-09 0:13

Blikkies

13-Oct-09 0:13

Hey all

I added silverlight to an existing asp.net project and used asp:Silverlight control to embed the silverlight, everything works fine.

I set color of my website body to LightGray but the silverlight control background is still showing white, I tried setting the control backcolor to Transparent but still no luck.

Any help will be appresaited.

Thanks.

Re: Silverlight Background color problem

Mark Salsbery13-Oct-09 6:17

Re: Silverlight Background color problem

13-Oct-09 6:17

The background of the plugin object (what you see before
any XAML is loaded) is set on the plugin object as described
here: Background (Silverlight Plug-in Object)[^]

Note the default is "white", and if you use transparent, I'm pretty sure
you'll see black.

Once there's Silverlight elements up, those elements will determine
the background.

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Blikkies13-Oct-09 9:46

Blikkies

13-Oct-09 9:46

Thanks for your reply, it helped me alote

Mark Salsbery wrote:
Note the default is "white", and if you use transparent, I'm pretty sure
you'll see black.

It did show a black background, i just set the windowless property to true, now it shows perfect.

Thanks again.

WPF Large image grid - best control to use?

Bex_300012-Oct-09 23:52

Bex_3000

12-Oct-09 23:52

Morning folks,

I need to generate a grid programatically an image per cell in a grid-like fashion that could be 100 x 100 or more, so I need a high performance control that will be able to handle interacting with the grid once its loaded. I've tried a stack panel method which did work quite well but there seemed to be a bit of a performance lag on it. I'm a bit new to WPF so if you have any suggestions as to what would be best to use that's be fab Smile | :)

Thanks very much,
Becky

Draw database diagram using Silverlight

Jay_se12-Oct-09 10:59

Jay_se

12-Oct-09 10:59

Hi
I am having the requirement like drawing the database relationship diagram.
Please find the sample image in the below path.
http://siebelunleashed.com/wp-content/uploads/2008/06/informaticasourcequalifierscreenshot.png

1. By default, each table icon is in the minimized state & is displayed as a clickable button.
2. If the user click on it, it will be maximized & all the columns displayed (with scroll, if number of columns exceeds its maximum limit)
3. The user can move the icons anywhere around the UI boundaries.
4. The user can minimize it back to an icon by clicking on the minimize botton.
5. There is a connector between related tables (primary/ foreign key relationship) Column wise connector is not required in my case. Only one connector between the related tables is required.
6. If the user clicks on the connector, the relationship details will be displayed in a popup window.

How can we implement the same in Web UI using Silverlight?

Till now, I have tried with WCF for the database connectivity & drawn few movable images (Image control with mouse event handlers) and connectors (line control) between them by created all the controls dynamically from code behind file (xaml.vb)

Kindly help us with your valuable suggestions on this. Smile | :)

Thanks
Jeyakumar

Jey

Re: Draw database diagram using Silverlight

Mark Salsbery13-Oct-09 6:20