TextBox不支持系统十进制(点或逗号)

Question

如果我将Texta 绑定TextBox到float属性,则显示的文本不符合系统十进制(点或逗号).相反,它总是显示一个点('.').但是如果我在a中显示值MessageBox(使用ToString()),则使用正确的System Decimal.

XAML

<StackPanel>
    <TextBox Name="floatTextBox"
             Text="{Binding FloatValue}"
             Width="75"
             Height="23"
             HorizontalAlignment="Left"/>
    <Button Name="displayValueButton"
            Content="Display value"
            Width="75"
            Height="23"
            HorizontalAlignment="Left"
            Click="displayValueButton_Click"/>
</StackPanel>

代码背后

public MainWindow()
{
    InitializeComponent();
    FloatValue = 1.234f;
    this.DataContext = this;
}
public float FloatValue
{
    get;
    set;
}
private void displayValueButton_Click(object sender, RoutedEventArgs e)
{
    MessageBox.Show(FloatValue.ToString());
}

到目前为止,我已经用一个转换器解决了这个问题,转换器用系统十进制取代了dot(这是有效的),但这是必要的原因是什么？这是设计,是否有更简单的方法来解决这个问题？

SystemDecimalConverter(以防其他人遇到同样的问题)

public class SystemDecimalConverter : IValueConverter
{
    private char m_systemDecimal = '#';
    public SystemDecimalConverter()
    {
        m_systemDecimal = GetSystemDecimal();
    }
    object IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return value.ToString().Replace('.', m_systemDecimal);
    }
    object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return value.ToString().Replace(m_systemDecimal, '.');
    }
    public static char GetSystemDecimal()
    {
        return string.Format("{0}", 1.1f)[1];
    }
}

Answer 1

看起来有一个解决方案:

http://www.nbdtech.com/Blog/archive/2009/03/18/getting-a-wpf-application-to-pick-up-the-correct-regional.aspx

这是另一个可能有帮助的讨论:

http://connect.microsoft.com/VisualStudio/feedback/details/442569/wpf-binding-uses-the-wrong-currentculture-by-default