1 using System; 2 using System.Collections.Generic; 3 using System.Globalization; 4 using System.Linq; 5 using System.Text; 6 using System.Windows.Data; MyUserControlLibrary 9 { 将角度转化成百分比 ConverterCircleToPercent:IValueConverter 14 { Convert(object value, Type targetType, object parameter, CultureInfo culture) 16 { 17 return (int)(double.Parse(value.ToString()) * 10 / 36); 18 } ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) 20 { NullReferenceException(); 22 } 23 } 24 }