What do you need exactly?

I have another 2 little issues,

I am Working with MVVM and when launching, the graph is painted before the data is got from my BBDD, so, it paints nothing even when I add informations to my Observable collection. I have to do a visibility = visible to the chart to paint my information. Any way of synchronizing this to show directly when my observable collection is created and filled?

The second one is about the legend. How can I show a legend with the name of each installation and it's colour? I want to show a legend and a tooltip when the mouse enters in each bar piece.

Thank you

Do you want a loading splash? Or to hide the chart until there is data? In either case you should just listen to the collectionchanged event on your collection and show the chart or remove the overlaid splash when the data arrives.

You should just be able to point the chart at a legend that you add to the page. Set its legend property. For example, if your legend has a name legend1 then you can do something like this: Legend="{Binding ElementName=legend1}"

I will try to listen the events, but that goes against my MVVM pattern.

And how do I bind the name of my elements of the GROUPBY ?

Thank you

Its not against the pattern, have something in your viewmodel listen to the event and change a visibility property on the viewmodel accordingly. Then have the chart or a splash bind to the visibility property on your viewmodel.

You will have to explain what you mean by the second question in more detail.

Hope this helps!

-Graham

My second question, I have this legend and I don't know how to bind the context to my GroupByItems. i want to show the KeyMemberPath name in my legend.

Legend:

<ig:Legend x:Name="xmLegend" 

HorizontalAlignment="Stretch" 

Background="Transparent" Padding="2"

BorderBrush="Transparent" 

Style="{x:Null}" 

VerticalAlignment="Top" 

Margin="2"

Content="{Binding Source={StaticResource grouped},Path= KeyMemberPath}">
</ig:Legend>

Groupby:

<igChart:GroupBy
            x:Key="grouped"
            ItemsSource="{Binding ValuesOfExcessVsEmissions,Mode=TwoWay}"
            GroupMemberPath="Date"
            KeyMemberPath="Name"
            ValueMemberPath="Total"/>

Using the Sample above how do we properly format the Tooltip value?

Currently it is only displaying the value not the name.

Current Tooltip reads: Series Title: 7

Ideally we want: Emission: 7.

Thanks,

Michael

Using the sample above, how to we get the tooltip to provide meaningful text?

<igChart:StackedColumnSeries x:Name="stack"
ItemsSource="{StaticResource grouped}"
 XAxis="{Binding ElementName=xAxis}"
 YAxis="{Binding ElementName=yAxis}"
 AutoGenerateSeries="True"
 ShowDefaultTooltip="True">
</igChart:StackedColumnSeries>

See attached screenshot.

Thanks,

Michael

Got it now that I am awake. :-)

<Window x:Class="WpfAppStackedColumnSerie.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfAppStackedColumnSerie"
xmlns:igChart="clr-namespace:Infragistics.Controls.Charts;assembly=InfragisticsWPF4.Controls.Charts.XamDataChart.v14.2"
xmlns:ig="http://schemas.infragistics.com/xaml"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:TestEmissionsCollection x:Key="data" />
<ig:GroupBy x:Key="grouped"
ItemsSource="{StaticResource data}"
GroupMemberPath="Date"
KeyMemberPath="Installation"
ValueMemberPath="Emission" />
</Window.Resources>
<Grid>

Is GroupBy still available for WPF in version 15.1?

What is the namespace for "igChart"?

Snippet:

1. <UserControl.Resources>  
2.         <local:TestEmissionsCollection x:Key="data" />  
3.         <igChart:GroupBy   
4.             x:Key="grouped"  
5.             ItemsSource="{StaticResource data}"   
6.             GroupMemberPath="Date"   
7.             KeyMemberPath="Installation"   
8.             ValueMemberPath="Emission" />  
9.     </UserControl.Resources>  

Thanks,

Michael