Creating a multi trigger

It is not mandatory to use a trigger to perform only an action based on a single condition. Sometimes you need to create it with a composition of multiple conditions that activate the entire trigger, if all the conditions are met. This is what the multi trigger does. Let's see how to create a multi trigger.

Getting ready

Open your Visual Studio IDE and create a new WPF application called CH06.MultiTriggerDemo.

How to do it...

In the following steps, we will build a simple application that will create and execute a multi trigger based on some conditions and change the Foreground and Background properties of the TextBox controls:

1. Open the MainWindow.xaml file.
2. Replace the default Grid panel with a vertical StackPanel.
3. Add two TextBox controls inside the panel and set their Text property to represent some text. Here's the XAML that we will be using in this example:

<StackPanel> 
    <TextBox Text="Focus your cursor here" 
             FontSize="20" 
             HorizontalAlignment...