using System; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Data; namespace JiangsuEarthquake.Common { public class AspectRatioConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { double ratio = double.Parse(value.ToString()) / double.Parse(parameter.ToString()); return ratio; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } }