WPF

cjb110 wrote:

I could *cheat* a put the lookup list in the Model, but that doesn't seem the right approach at all...this is a view only thing.

public class FooViewModel : INotifyPropertChanged
{
  string _boundProperty;
  public string BoundProperty
  {
    get
    {
      return _boundProperty;
    }
    set
    {
      if(_boundProperty != value)
      {
        _boundProperty = value;
        NotifyPropertyChanged("BoundProperty");
        NotifyPropertyChanged("DependantProperty");
      }
    }

  }

  //Could be observable collection etc.....
  public List<Foo> DependantProperty
  { 
    get
    {
      return MyMasterListOfFoo.Where(x=> x.Bar ==BoundProperty).ToList()
    }
  }

}

public class StringToColorConvertor : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (!(value is string))
                throw new ArgumentException("value is not a string");

            string text = (string) value;
            byte[] data;

            //create a 16 byte md5 hash of the string
            using (MD5 md5 = MD5.Create())
                data = md5.ComputeHash(Encoding.UTF8.GetBytes(text));

            //use 3 values from the hash to create the color
            //provide an alpha value to prevent readability issues if this color is used as a text background
            return new SolidColorBrush(Color.FromArgb(150, data[0], data[7], data[15]));
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

<Grid>
  <WindowsFormsHost>
    <myNamespace:MyChartControl />
  </WindowsFormsHost>
</Grid>