Using value converters

Data templates provide a powerful way to visualize any data. We discussed a few ways to customize the appearance of data templates. In this recipe, we'll look at value converters, which is a flexible mechanism to customize data bindings in general, and data templates in particular. Their power ranges from simple data transformations to significant visual changes.

Getting ready

Make sure Visual Studio is up and running.

How to do it...

We'll create a weather forecast application that uses a value converter to convert a general weather outlook into a brush.

1. Create a new WPF application named CH06.WeatherForecast.

2. We'll create a simple weather forecasting application. Add a new class named Forecast with some simple properties:

   enum GeneralForecast {
      Sunny,
      Rainy,
      Snowy,
      Cloudy,
      Dry
   }
    
   class Forecast {
      public GeneralForecast GeneralForecast { get; set; }
      public double TemperatureHigh { get; set; }
      public double TemperatureLow { get; set; }
      public double...