Chart ToolKit error in WPF - WPF Discussion Boards

Re: Changing Button Programatically [SLVED, but still accepting input/comments]

6-Apr-10 7:49

I have a button style resource defined (essentially, it defines the button's shape to be an ellipse instead of a rectangle). I am programatically adding a button with this style to my user control. There is no text/content on the button. This part works just fine.

When I add this button, I want to change the background color (green, yellow, red, or gray) based on a given status. How would I go about doing that?

EDIT =========

I kinda cheated. Instead of having just one style and changing the color inside it, I created foru button styles that represent the four status indicators, and pick the appropriate style in the code.

I know, it's probably not very "silverlighty", but it got me past the issue. Smile | :)

Still, if anyone wants to comment, be my guest.

Pete O'Hanlon6-Apr-10 9:17

6-Apr-10 9:17

One way to do this would be to use a converter. You could always change the background colour based on a binding.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Re: Changing Button Programatically [SLVED, but still accepting input/comments]

Michael J. Eber19-Apr-10 11:49

Michael J. Eber

19-Apr-10 11:49

As Pete suggested, you would create a ColorConverter which basically interogates the value of the bound object and sets the color based on that value.

In your XAML you would have

background="{Binding Status, Converter={StaticResource foregroundConverter}}"

And the color converter code would be something like this:

public class CodeToBackgroundColorConverter : IValueConverter
{
    public object Convert( object value, Type targetType, object parameter, System.Globalization.CultureInfo culture )
    {
        Color c;
        int i = 0;

        if ( value != null && int.TryParse( value.ToString( ), out i ) )
        {
            switch ( i )
            {
                case 1:
                    c = Colors.White;
                    break;
                case 2:
                    // change to gold
                    c = Colors.Orange;
                    break;
                default:
                    c = Colors.White;
                    break;
            }
        }
        else
            c = Colors.White;

        return new SolidColorBrush( c );
    }

    public object ConvertBack( object value, Type targetType, object parameter, System.Globalization.CultureInfo culture )
    {
        return Colors.White;
    }
}

Chart ToolKit error in WPF

Nanda_MR6-Apr-10 1:36

Nanda_MR

6-Apr-10 1:36

hello to all.

I am trying add component Toolkit(Chart). But I am getting Following error.

I was tried FrameWork 3.5 and 4.0 both tool but same error is coming

There was an error loading types from assembly 'Path\WPF Toolkit.dll"\r\n'Could not load type 'System.Windows.Controls.Primitives.MultiSelectior' from assembly 'PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.\r\n\r\n

Regards,
Nanda

wpf menu errors in XP

hb521342145-Apr-10 13:24

hb52134214

5-Apr-10 13:24

I have an application built in vs2008 using .net3.5 sp1 on a Windows 7 box. On the build machine, everything works like a charm. However, when I install it on an XP machine, the menu's behave improperly.

The observed behavior is that when a menu is opened and the mouse moved over the menu items, the first menu item that the mouse enters, stays visible, while the rest of the menu disappears. Its very strange. It looks like the menu item that the mouse is over is just a floating button. The item can be clicked and it works, but the other menu items (and their enclosing panel) are gone. Moving the mouse up or down does not "recover" the other menu items. Using keyboard cursers produces the same strange behavior.

My app is large enough that there could be plenty of coding errors, so I built a simple app to test the issue. It shows the same odd behavior. The simple app is a default WPF project with:

<DockPanel LastChildFill="True">
    <Menu DockPanel.Dock="Top">
      <MenuItem Header="_File">
        <MenuItem Command="{x:Static c:Window1.OpenCmd}" />
        ...
      </MenuItem>
    </Menu>
    <StackPanel>
      <TextBlock Text="Here" />
    </StackPanel>
  </DockPanel>

added to the window1.xaml and:

bool isOpen=false;
public static readonly RoutedUICommand OpenCmd = new RoutedUICommand("_Open", "Open", typeof(Window1));
public Window1() {
  InitializeComponent();
  CommandBinding cb = new CommandBinding(OpenCmd, exe, can);
  CommandBindings.Add(cb);
}
void CanOpen(object sender, CanExecuteRoutedEventArgs e) {
  e.CanExecute = !isOpen;
  e.Handled = true;
}
void CanClose(object sender, CanExecuteRoutedEventArgs e) {
  e.CanExecute = isOpen;
  e.Handled = true;
}

added to the window1.xaml.cs.

I've simplified the xaml & c# code to only show 1 command, but obviously the error is only visible when with several items in the menu.

The Windows XP machine is a fully updated XP box (sp3 with .net 3.5sp1) that has been cleanly installed. It is running under VMWare 6.5, which I suppose opens a number of potential issues, but I run a heck of a lot of apps under vm's and haven't had any noticable issues.

Any suggestions would be greatly appreciated.

Re: wpf menu errors in XP

hb521342145-Apr-10 13:54

hb52134214

5-Apr-10 13:54

Looks like it might be a hardware acceleration and video driver issue. Disabling DirectX 9c for the vm's video solved the problem. I suppose it could be an issue in WPF's device capabilities and software emulation functionality as well.

Context Menu

ScottRadel5-Apr-10 12:09

ScottRadel

5-Apr-10 12:09

I have a dynamically created image control in my application and want to add a Context menu to it. The following code does show the menu on right click, but does not show any of the menu itmes. Any ideas? I know it is something pretty simple, but hey i am new.
thanks for any help
Scott

ContextMenu mainMenu = new ContextMenu();

mainMenu.Height = 300;
mainMenu.Width = 200;

MenuItem imgCopy = new MenuItem();
imgCopy .Width = 50;
imgCopy .Height = 25;
imgCopy .Header = "Copy";
imgCopy .Foreground = Brushes.Black;

mainMenu.Items.Add(itemCover);

imgControl.ContextMenu = mainMenu;

Re: Context Menu

hb521342145-Apr-10 13:56

hb52134214

5-Apr-10 13:56

If you put the code in imgControl.ContextMenuOpening, you should be able to make this work. You don't need to size the main menu or its children WPF should measure and display correctly.

Re: Context Menu

ScottRadel6-Apr-10 8:21

ScottRadel

6-Apr-10 8:21

Yep that worked thanks for the help.

I did notice that the first time i right click on an image that i created at run time, i have to click twice to get the contect menu to show. The next time i right click on the same image i only have to click once. not sure what is going on there.

but thanks again for the help
Scott

Setting a Style Programatically [modified]

#realJSOP5-Apr-10 9:36

5-Apr-10 9:36

I have a StackPanel specified in the XAML, and I'm trying to add children to it programatically. My code looks something like this:

First the Xaml... (I would have formatted this correctly, but CP is blowing chunks on the formatting stuff, so you're getting this as plain text)

<UserControl.Resources>
<Style x:Key="BorderStyle" TargetType="Border">
...
</Style>

<Style x:Key="LabelStyle" TargetType="dataInput:Label">
...
</Style>
</UserControl>

<Grid>
<StackPanel Name="stackPanel" Orientation="Horizontal" Height="60" >
<Border Width="300"/>
</StackPanel>
</Grid>

And in my CS code (being called from the <code>UserControl</code>'s constructor, after <code>InitializeComponent()</code>...

<pre>Border border = new Border()
border.Style = this.Resources["BorderStyle"] as Style;
Label label = new Label();
label.Style = this.Resources["LabelStyle"] as Style;
border.Child = label;
stackPanel.Children.Add(border);
</pre>

When I run the code, I get a "Catastrophic failure" exception, and as you might guuess, the app dies a horrible death. What am I doing wrong?

-- Modified Monday, April 5, 2010 3:57 PM

Pete O'Hanlon5-Apr-10 10:46

5-Apr-10 10:46

This is working perfectly well for me. What do you have in your styles?

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

#realJSOP5-Apr-10 12:14

5-Apr-10 12:14

Do you see the error? I did while I was posting this. Smile | :)

<Style x:Key="BorderStyle" TargetType="Border">
	<Setter Property="CornerRadius" Value="O" />
	<Setter Property="BorderBrush" Value="Transparent" />
	<Setter Property="Background" Value="SlateBlue" />
	<Setter Property="BorderThickness" Value="2,0,2,2" />
	<Setter Property="Width" Value="60" />
	<Setter Property="Height" Value="30" />
	<Setter Property="RenderTransformOrigin" Value="0.5, 0.5" />
	<Setter Property="RenderTransform">
		<Setter.Value>
			<TransformGroup>
				<ScaleTransform/>
				<SkewTransform/>
				<RotateTransform Angle="270"/>
				<TranslateTransform/>
			</TransformGroup>
		</Setter.Value>
	</Setter>
</Style>

Pete O'Hanlon6-Apr-10 9:03

6-Apr-10 9:03

I do see a problem with the CornerRadius. It would be better if the error message was more helpful.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

#realJSOP6-Apr-10 9:17

Text Rotation - Is It Just Me?

6-Apr-10 9:17

Yeah - "catastrophic failure" ain't exactly intuitive. Smile | :)

#realJSOP5-Apr-10 0:04

Re: Text Rotation - Is It Just Me?

5-Apr-10 0:04

Alright. I've been dickin' around with text rotation for two days, and I still don't get it. When I turn text 90 degrees i expected it to automatically adjust it's properties to essentially reflect it's original layout, only turn on its side. If I have a Label centered in a Border, and I rotate the Label, I have to dick around in Blend to get it to show up without being curt off, and without having to resize the container, and ll manner of other adjustments just to get the appearance I want.

I finally got tired of it last night, and I'm hoping someone answers this post before I get to work. Do I have to actually create a container (like a canvas) and put the text into the canvas to get what I want? What's the best way to do this?

Pete O'Hanlon5-Apr-10 10:20

5-Apr-10 10:20

You are applying a transformation on the label, not the container, so any transformation you apply will have an effect only on the Label. If the container isn't big enough then the transformation will get cut off. You do need to transform the container instead.

"WPF has many lovers. It's a veritable porn star!" - Josh Smith

As Braveheart once said, "You can take our freedom but you'll never take our Hobnobs!" - Martin Hughes.

Silverlight Automatic Image Transition

saurabh94-Apr-10 23:03

saurabh9

4-Apr-10 23:03

Hello All

I am developing a website in which on the first page there is a section in which i want to change images automatically on the first page in silverlight.

I have searched a lot but could not find one..

Plese tell me a link to the tutorial

Re: Silverlight Automatic Image Transition

Michael J. Eber19-Apr-10 11:54

Michael J. Eber

19-Apr-10 11:54

I guess you just didn't find the right words to search for. Found this is a few seconds.
Configurable Silverlight Image Rotator[^]

Rotaing Label control

#realJSOP4-Apr-10 5:58

Re: Rotaing Label control

4-Apr-10 5:58

I'm trying to rotate a Label , and while the label is indeed rotating, the top/bottom of the text is cutoff. As you can see in the code posted below, I tried setting the width/height of the label, but that effected no visual change. What am I doing wrong?

<UserControl.Resources>
<Style x:Key="MidHeaderPanel" TargetType="Border">
	<Setter Property="BorderBrush"     Value="Black" />
	<Setter Property="BorderThickness" Value="2,0,0,2" />
	<Setter Property="Width"           Value="30" />
	<Setter Property="Background"      Value="SlateBlue" />
	<Setter Property="CornerRadius"    Value="0,0,0,0" />
</Style>

<Style x:Key="BaseNameHeaderText" TargetType="dataInput:Label">
	<!--<Setter Property="Width"                 Value="60" />
	<Setter Property="Height"                Value="30" />-->
	<Setter Property="FontFamily"            Value="Arial" />
	<Setter Property="FontWeight"            Value="Bold" />
	<Setter Property="FontSize"              Value="24" />
	<Setter Property="Foreground"            Value="White" />
	<Setter Property="Background"            Value="Transparent" />
	<Setter Property="HorizontalAlignment"   Value="Center" />
	<Setter Property="VerticalAlignment"     Value="Center" />
	<Setter Property="UseLayoutRounding"     Value="False" />
	<Setter Property="RenderTransformOrigin" Value="0.5,0.5" />
	<Setter Property="RenderTransform">
		<Setter.Value>
			<RotateTransform Angle="90" />
		</Setter.Value>
	</Setter>
</Style>
</UserControl.Resources>

<Grid x:Name="LayoutRoot" >
	<Border Margin="10" CornerRadius="10" BorderThickness="2" BorderBrush="Black" Width="Auto" Height="Auto">
		<controlsToolkit:DockPanel VerticalAlignment="Top">
			<StackPanel x:Name="JellyBeanPanel" Height="100"  HorizontalAlignment="Left" Background="Transparent">
				<StackPanel x:Name="HeaderRow" Height="60" Orientation="Horizontal">
					<Border Style="{StaticResource MidHeaderPanel}">
						<dataInput:Label Style="{StaticResource BaseNameHeaderText}" Content="LUK" />
					</Border>
				</StackPanel>
			</StackPanel>
		</controlsToolkit:DockPanel>
	</Border>
</Grid>

Abhinav S4-Apr-10 6:50

Abhinav S

4-Apr-10 6:50

Just remove

	<Setter Property="HorizontalAlignment"   Value="Center" /><br />
<br />
	<Setter Property="VerticalAlignment"     Value="Center" />

from your style and things should be fine.

*Edit*
You would also need to remove the hardcoded width
<Setter Property="Width" Value="30" />
from your first style.
*Edit*

Me, I'm dishonest. And a dishonest man you can always trust to be dishonest.
Honestly. It's the honest ones you want to watch out for...

Re: Rotaing Label control

#realJSOP4-Apr-10 7:02