Develop Reference

InteractiveDataDisplay.WPF: How to display the value on the graph

I'm using this library in my project InteractiveDataDisplay.WPF.
I want to display the value in the tooltip when I hover over the graph line, but I don't know how.
XAML of my graph:
<Grid>
<wpf:Chart
Margin="10"
IsHorizontalNavigationEnabled="False"
IsVerticalNavigationEnabled="False"
LeftTitle="Высота (м)"
BottomTitle="Значение ветрового давления (Т/м²)">
<Grid>
<wpf:LineGraph x:Name="linegraphNorm"
Description="Нормативная нагрузка"
Stroke="Green"
StrokeThickness="3"/>
<wpf:LineGraph x:Name="linegraphCalc" Description="Рассчетная нагрузка" Stroke="Red"
StrokeThickness="3" />
</Grid>
</wpf:Chart>
</Grid>
The code in which the values ​​are to be filled,
here variables normResult and calcResult are Dictionary(double,double):
var graphic = new Graphic();
graphic.linegraphNorm.Plot(normResult.Values, normResult.Keys);
graphic.linegraphCalc.Plot(calcResult.Values, calcResult.Keys);
graphic.ShowDialog();
Now my tooltip looks like this:
I want my tooltip to look like this:
Can anyone advise me a simple way to solve this problem?

Element is already the child of another element when doesnt exist?

I'm trying to programatically create a button flyout, within my XAML I have:
<Page.Resources>
<Button x:Key="LaunchFlyout" Content="LAUNCH">
<Button.Flyout>
<Flyout Placement="Top">
<Grid Width="200" Height="200">
<StackPanel>
<Rectangle Fill="Red" Width="100" Height="100" />
<Rectangle Fill="Green" Width="100" Height="100" />
</StackPanel>
</Grid>
</Flyout>
</Button.Flyout>
</Button>
</Page.Resources>
Nested within grids I have:
<Grid x:Name="launchBtn_grid" Grid.Column="1">
</Grid>
And then in my code within the Page_Loaded method I have:
bool hasContainer = localSettings.Containers.ContainsKey("appStatus");
if (!hasContainer) {
Button button = (Button)this.Resources["LaunchFlyout"];
launchBtn_grid.Children.Add(button);
}
else {
Button button = new Button();
button.Content = "LAUNCH";
button.Click += launch_btn_Click;
launchBtn_grid.Children.Add(button);
}
When I debug this, it reaches the IF statement and reaches this line launchBtn_grid.Children.Add(button); and then I get this error Element is already the child of another element.
Does anyone understand why? I have already looked and they dont already exist so I don't understand why it is giving me this error. Does anyone know what I am doing wrong?

I'm not sure in what context/use case your are doing that, but it feels weird to me to have an actual control as a Resource (not a DataTemplate, Style, etc).
If you only want to have 1 button of the 2 different template, why not switch Visibility on the 2 instead of loading controls from your code behind ?
Going forward with the idea, just add both buttons in the Grid within your XAML and switch their Visibility according to the setting you read.
There is a BooleanToVisibilityConverter within the framework to help you with this.

hide or remove border of wpf button in C# code

I have a stackpanel named "mystack" in my xaml file and I am adding buttons in it dynamically from the .cs file and want to remove the border of buttons in C# .cs file
what I really want is to populate this stackpanel with the buttons coming from a list of string
thanks in advance
xaml:
<Grid HorizontalAlignment="Left" Height="227" Margin="10,10,0,0" Grid.Row="2"
VerticalAlignment="Top" Width="530">
<ScrollViewer VerticalScrollBarVisibility="Auto">
<StackPanel Name="mystack" HorizontalAlignment="Left" Grid.Row="2"
VerticalAlignment="Top" Width="520"/>
</ScrollViewer>
</Grid>
.cs:
public List<String> Schools()
{
List<String> l = new List<string>();
l.Add("SST");
l.Add("SBE");
l.Add("SSH");
return l;
}

I agree with HighCore, you generally do not want to manipulate the UI elements in your code.
To remove the Border of the buttons you can set a Button's BorderThickness property to "0" in Xaml or to new Thickness(0) in the code-behind.
i.e.
myButton.BorderThickness = new Thickness(0);
EDIT:
Okay, I noticed your updated question. I would create a property that stores your list of schools and bind to it in a way similar to this:
public List<string> Schools
{
get { return _schools; }
set { _schools = value; }
}
Somewhere you need to set the DataContext of the control to your class containing the Schools property. If you are dynamically updating the list of Schools you'll need to implement INotifyPropertyChanged so the UI knows when to update. And then your Xaml would look something like this:
<ItemsControl ItemsSource="{Binding Schools}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button Content="{Binding}" BorderThickness="0" />
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl>

You can't remove button's border like: btn.BorderThicknes=new Thickness(0);
See this: Removing button's border

The fast Fix:
What I had to do to effectively hide the button border - and due to the button control template I believe which utilizes and changes Button border (i.e. even if you remove it it'd draw it on some trigger I believe)...
...was to set BorderBrush="Transparent" as well (I always do BorderThickness as well but I'm guessing it's not needed - only for visual/layout look'n'feel)
i.e. setting thickness alone is not enough.
I'm really not sure that's the bets way to do it, or actually I'm
quite sure there must be something smarter - but I always end up with
that.
The Right Way:
Proper way - and recommended - is to write your own Button template -
based on the Microsoft official one - or base it on it - and do what
you need w/o borders.
For the code behind/C#:
You really don't need that as per your changed question - do what others suggested already

the best way to do this is :
<Style TargetType="Button">
<Style.Resources>
<Style TargetType="{x:Type Border}">
<Setter Property="CornerRadius" Value="0"/>
</Style>
</Style.Resources>
</Style>

what I really want is to populate this stackpanel with the buttons
coming from a list of string
That's called a ListBox:
<ListBox ItemsSource="{Binding Items}">
<ListBox.ItemTemplate>
<DataTemplate>
<Button Content="{Binding}" BorderThickness="0"/>
<!-- Whatever other customizations to the button -->
</DataTemplate
</ListBox.ItemTemplate>
</ListBox>
ViewModel:
public class ViewModel
{
public ObservableCollection<string> Items {get;set;}
public ViewModel()
{
Items = new ObservablecCollection<string>();
Items.Add("String1");
Items.Add("String2");
Items.Add("String3");
}
}
You need to learn the MVVM pattern.

Bing Maps (Silverlight) maps - specifying canvas to be at foreground through XAML

Below is the XAML code i have for a Bing Maps Silverlight weather related implementation.
Here is what i am trying to do:
Have a bing maps with several (over 100) pushpins- on mouseover - show a contentpopup (canvas=myPopup) below. Simple enough.
Everything works fine - however, when mypopup displays on mouseover, it is not on the foreground (the other pins appear on top of the contentpopup) - hence making it not very readable.
Question:
How do i specifiy the myPopup canvas specified in XAML below to always appear in the foreground, i.e. top most of the Bing Maps silverlight control when a user views it on mouseover.
Thanks!
<Grid x:Name="LayoutRoot" Background="White">
<m:Map x:Name="GlobalMap" Mode="Road" Center="15,7" ZoomLevel="2" CredentialsProvider="{StaticResource MyCredentials}" Margin="-70,-40,-100,-72">
<m:MapLayer x:Name="myLayer">
<Canvas x:Name="myPopup" Visibility="Collapsed" Opacity="1">
<Rectangle x:Name="myPopupRectangle" Fill="White" Canvas.Left="0" Canvas.Top="0" Height="100"
Width="100" RadiusX="15" RadiusY="15"/>
<StackPanel Canvas.Left="8" Canvas.Top="8">
<TextBlock x:Name="myPopupTexts" FontSize="5" Width="100">
</TextBlock>
</StackPanel>
</Canvas>
</m:MapLayer>
</m:Map>
</Grid>

Try adding Canvas.ZIndex to the MapLayer element, give it a large value like 200 or add your push pins to another MapLayer (rather than adding the pins directly to the map) that appears ahead of this popup layer in document order.

I did something similar to this, but took a different approach. What I did was create a custom pushpin template and create a PopUp within the template.
When the user hovers over the pushpin, the popup is displayed. Using the PopUp will solve your problem, since the control will automatically position it on top of everything. Try wrapping the Canvas in a PopPup and see if that works.
hth

Cannot assign geometry to Button clip property

I'm working on an interactive map. I'm using Silverlight 4 within VisualStudio 2010.
My problem is that I can't assign a geometry to Button Clip property:
Code:
bouton1.Clip = (PathGeometry)Forme.Data;
//forme is a class that inherits from Path
when I run my application I get an ArgumentException:
The value is not included in the expected range

Your Path called "Forme" has its geometry defined using the Path Mini-Language right?
This type of Geometry cannot be share by multiple elements.
The work-around is store the path data as a string in a ResourceDictionary accessible to both your "Forme" element and "bouton1" then assign it using StaticResource. Something like:-
<StackPanel>
<StackPanel.Resources>
<sys:String x:Key="MyPath">M 10,100 C 10,300 300,-200 300,100</sys:String>
</StackPanel.Resources>
<Button x:Name="btn" Content="Button" Height="150" Clip="{StaticResource MyPath}" />
<Path Data="{StaticResource MyPath}" Stroke="Black" StrokeThickness="2" />
</StackPanel>
The painful downside is that the VS2010 designer doesn't grasp this and therefore doesn't apply the path. You would need to run the app to visually see the results.

I changed button with Path and MouseLeftButtonDown event, it works :)