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Adding xamTreemap Using Procedural Code

Before You Begin

This topic describes the basic steps required for adding the xamTreemap™ control to your application using XAML. The control needs a data object model to be mapped to its DataContext property - the topic will provide a simple data object model, but you can create your own and use it instead.

What You Will Accomplish

You will add an instance of the xamTreemap control with simple data binding to your application .

Follow these Steps

Note: This sample uses a simple data model for binding the xamTreemap control’s DataContext property. You can download it from Manufacturer View Model and use it in your project while working through this sample.

  1. Create a Microsoft® WPF™ application.

  2. Add the following NuGet package to your application:

    • Infragistics.WPF.Treemap

    For more information on setting up the NuGet feed and adding NuGet packages, you can take a look at the following documentation: NuGet Feeds.

  1. Add an event handler to the UserControl’s Loaded event.

In XAML:

<UserControl Loaded="UserControl_Loaded">
</UserControl>

  1. Place using/Imports in your code behind.

In Visual Basic:

Imports Infragistics.Controls.Charts
Imports DATA_MODEL_NAMESPACE

In C#:

using Infragistics.Controls.Charts;
using DATA_MODEL_NAMESPACE;

  1. Inside the UserControl_Loaded event handler, create an instance of the xamTreemap control with a DataContext bound to the ManufacturerViewModel and an ItemsSource bound to the Manufacturers property of the view model.

In Visual Basic:

Dim data As New ManufacturerViewModel()
Dim Treemap As New XamTreemap()
Treemap.DataContext = data
Treemap.ItemsSource = data.Manufacturers

In C#:

ManufacturerViewModel data = new ManufacturerViewModel();
XamTreemap Treemap = new XamTreemap();
Treemap.DataContext = data;
Treemap.ItemsSource = data.Manufacturers;

  1. Add the new instance of xamTreemap to the Grid panel’s Children collection (note that upon initial page creation, a grid panel called "LayoutRoot" is defined by default).

In Visual Basic:

Me.LayoutRoot.Children.Add(Treemap)

In C#:

this.LayoutRoot.Children.Add(Treemap);

  1. Create a new Node Binder and add it to the xamTreemap control’s NodeBinders collection.

In Visual Basic:

Dim binder As New NodeBinder()
binder.TargetTypeName = "Manufacturer"
binder.ValuePath = "Revenue"
binder.TextPath = "Name"
Treemap.NodeBinders.Add(binder)

In C#:

NodeBinder binder = new NodeBinder();
binder.TargetTypeName = "Manufacturer";
binder.ValuePath = "Revenue";
binder.TextPath = "Name";
Treemap.NodeBinders.Add(binder);

Note: Here is how the xamTreemap control will look if you run your application at this step.

xamTreemap Adding xamTreemap Using Xaml Procedural Code 01.png

  1. Create a new Value Mapper and add it to the xamTreemap control’s ValueMappers collection.

In Visual Basic:

Dim mapper As New ColorMapper()
mapper.ValueTypeName = "Manufacturer"
mapper.TargetProperty = "Fill"
mapper.ValuePath = "Revenue"
mapper.From = Color.FromArgb(144, 255, 0, 0)
mapper.To = Color.FromArgb(144, 0, 128, 0)
Treemap.ValueMappers.Add(mapper)

In C#:

ColorMapper mapper = new ColorMapper();
mapper.ValueTypeName = "Manufacturer";
mapper.TargetProperty = "Fill";
mapper.ValuePath = "Revenue";
mapper.From = Color.FromArgb(144, 255, 0, 0);
mapper.To = Color.FromArgb(144, 0, 128, 0);
Treemap.ValueMappers.Add(mapper);

  1. Save and run your application.

xamTreemap Adding xamTreemap Using Xaml Procedural Code 02.png

Full Code

In Visual Basic:

    Private Sub UserControl_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
        Dim data As New ManufacturerViewModel()
        Dim Treemap As New XamTreemap()
        Treemap.DataContext = data
        Treemap.ItemsSource = data.Manufacturers
        Me.LayoutRoot.Children.Add(Treemap)
        Dim binder As New NodeBinder()
        binder.TargetTypeName = "Manufacturer"
        binder.ValuePath = "Revenue"
        binder.TextPath = "Name"
        Treemap.NodeBinders.Add(binder)
        Dim mapper As New ColorMapper()
        mapper.ValueTypeName = "Manufacturer"
        mapper.TargetProperty = "Fill"
        mapper.ValuePath = "Revenue"
        mapper.From = Color.FromArgb(144, 255, 0, 0)
        mapper.To = Color.FromArgb(144, 0, 128, 0)
        Treemap.ValueMappers.Add(mapper)
    End Sub

In C#:

        private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {
            ManufacturerViewModel data = new ManufacturerViewModel();
            XamTreemap Treemap = new XamTreemap();
            Treemap.DataContext = data;
            Treemap.ItemsSource = data.Manufacturers;
            this.LayoutRoot.Children.Add(Treemap);
            NodeBinder binder = new NodeBinder();
            binder.TargetTypeName = "Manufacturer";
            binder.ValuePath = "Revenue";
            binder.TextPath = "Name";
            Treemap.NodeBinders.Add(binder);
            ColorMapper mapper = new ColorMapper();
            mapper.ValueTypeName = "Manufacturer";
            mapper.TargetProperty = "Fill";
            mapper.ValuePath = "Revenue";
            mapper.From = Color.FromArgb(144, 255, 0, 0);
            mapper.To = Color.FromArgb(144, 0, 128, 0);
            Treemap.ValueMappers.Add(mapper);
        }

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