Using multi-value converters

When you want to change the target value based on multiple values of the same or different types, you will need to use multi-binding. This is done by using a multi-value converter (IMultiValueConverter interface).

In this recipe, we will build a sample demo to learn how to work with multi-binding and multi-value converters.

Getting ready

Open your Visual Studio IDE and create a new project called CH04.MultiValueConverterDemo, based on the WPF application project template.

How to do it...

Once the project is created, follow these steps to design the UI and do a multi-binding between multiple elements:

1. From the Solution Explorer, open the MainWindow.xaml page.
2. Inside the default Grid panel, create a few rows and columns, so that we can position elements at specific cells. Let's divide the Grid into five rows and three columns:

<Grid.RowDefinitions> 
    <RowDefinition Height="Auto"/> 
    <RowDefinition Height="Auto"/> 
    <RowDefinition Height="Auto...