DatePicker 的 IsSynchronizedWithCurrentItem （或等效项）？

发布于 2024-08-15 07:33:41 字数 605 浏览 5 评论 0原文

我目前有一个绑定到 ObservableCollection 的组合框

    <ComboBox ItemsSource="{Binding Past}" DisplayMemberPath="Date" IsSynchronizedWithCurrentItem="True"/>

，使用“IsSynchronizedWithCurrentItem”，它与一组标签“同步”，这些标签在一组标签中显示下面的数据，例如：

    <Label DataContext="{Binding SelectedDate}" Content="{Binding Minimum}" />

因为使用 DatePicker 选择日期要容易得多（就像 WPF 工具包那样，http://wpf.codeplex.com/）而不是带有超过其中有 300 个日期，是否有办法设置“IsSynchronizedWithCurrentItem”之类的内容，以便 DatePicker 可以控制“当前日期”？

谢谢

原文

I currently have a combobox with bound to an ObservableCollection

    <ComboBox ItemsSource="{Binding Past}" DisplayMemberPath="Date" IsSynchronizedWithCurrentItem="True"/>

Using, 'IsSynchronizedWithCurrentItem' it "synchronizes" with a set of labels that show the data below in a set of labels like:

    <Label DataContext="{Binding SelectedDate}" Content="{Binding Minimum}" />

As it is a lot easier to select a date using a DatePicker (like the WPF Toolkit one, http://wpf.codeplex.com/) rather than a combobox with over 300 dates in it, is there someway to set something like 'IsSynchronizedWithCurrentItem' so that the DatePicker can control the 'current date'?

Thank you

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月寒剑心 2024-08-22 07:33:41

我通过在视图模型中创建“CurrentDate”属性解决了这个问题：

    public DateTime CurrentDate
    {
        get { return (this.collectionView.CurrentItem as PastItem).Date; }
        set 
        { 
            this.collectionView.MoveCurrentTo(Past.Where(PastItem => PastItem.Date == Convert.ToDateTime(value)).FirstOrDefault()); 
        }
    }

然后为第一个和第二个属性创建两个属性。最后一个日期：

    public DateTime FirstDate
    {
        get { return this.Past.FirstOrDefault().Date; }
    }
    public DateTime LastDate
    {
        get { return this.Past.LastOrDefault().Date; }
    }

然后使用 DatePicker 绑定到这些属性：

    <wpf:DatePicker SelectedDate="{Binding CurrentDate}" DisplayDateStart="{Binding FirstDate, Mode=OneWay}" DisplayDateEnd="{Binding LastDate, Mode=OneWay}" />

这意味着 DatePicker 将仅限于第一个和最后一个日期：最后日期，并且可以选择一个日期，链接到详细信息。

I solved this by creating a 'CurrentDate' Property in my View Model:

    public DateTime CurrentDate
    {
        get { return (this.collectionView.CurrentItem as PastItem).Date; }
        set 
        { 
            this.collectionView.MoveCurrentTo(Past.Where(PastItem => PastItem.Date == Convert.ToDateTime(value)).FirstOrDefault()); 
        }
    }

and then creating two property's for the first & the last dates:

    public DateTime FirstDate
    {
        get { return this.Past.FirstOrDefault().Date; }
    }
    public DateTime LastDate
    {
        get { return this.Past.LastOrDefault().Date; }
    }

and then binding to these properties using the DatePicker:

    <wpf:DatePicker SelectedDate="{Binding CurrentDate}" DisplayDateStart="{Binding FirstDate, Mode=OneWay}" DisplayDateEnd="{Binding LastDate, Mode=OneWay}" />

This meant that the DatePicker would be limited to the first & the last dates, and one can choose a date, linked to the details.

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