wpf，当textbox绑定的value是int,decimal等数值类型时，当textbox 清空的时候，导致value仍然是原来的值的解决办法

Posted 2022-04-01 追风呀

     public class ValueConverter : IValueConverter
     
         public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
         
             return value;
         
 
         public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
         
             if (value is string && (string)value == "")
             
                 return 0;
             
 
             return value;
         
     

view

Text="Binding SupplyQuantity, Converter=StaticResource ValueConverter, UpdateSourceTrigger=PropertyChanged"