public object Convert(object value, Type targetType, object parameter, CultureInfo...returns>
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo...}
//值返回的处理
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo...public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo...public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo