Windows 8.1中InputScope与转换器的绑定

Question

我试图在类型上绑定文本框的InputScope值。为此，我使用一个转换器：

Xaml：

<TextBox 
    Style="{StaticResource TextBoxStyle}"
    InputScope="{Binding Type, Converter={StaticResource typetoInputScope}, Mode=TwoWay}">

转换器：

public class TypeToInputScope : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, string language)
    {
        Type type = (Type)value;
        if (type == typeof(string))
        {
            return InputScopeNameValue.AlphanumericHalfWidth;
        }
        else
        {
            return InputScopeNameValue.Number;
        }
    }

    public object ConvertBack(object value, Type targetType, object parameter, string language)
    {
        throw new NotImplementedException();
    }
}

当我在VS中调试时，它会进入转换器，但是InputScope不会改变。

Answer 1

好的，这里是：

        public object Convert(object value, Type targetType, object parameter, string language)
    {
        Type type = (Type)value;
        InputScope scope = new InputScope();
        InputScopeName name = new InputScopeName();

        if (type == typeof(string))
        {
            name.NameValue = InputScopeNameValue.AlphanumericFullWidth;
        }
        else
        {
            name.NameValue = InputScopeNameValue.Number;
        }
        scope.Names.Add(name);
        return scope;
    }