动态绑定到数据网格时出现问题

发布于 2024-12-05 17:48:26 字数 1073 浏览 0 评论 0原文

好吧，我有一个奇怪的小问题，我希望有人可以帮助我。

为了设置场景，我首先有一个对象：

public class Date
{
    public DateTime _WeekDate;
    public ICollectionView _WeekData;
}

我有一个组合框，它显示日期对象的列表。

<ComboBox Name="cbPickupDate" ItemsSource="{Binding Path=PickupDates}" DisplayMemberPath="WeekDate" />

好的，现在我采用所选日期对象的集合来为我的数据网格提供项目源：

<my:DataGrid ItemsSource="{Binding ElementName=cbPickupDate, Path=SelectedItem.WeekData}">
    <my:DataGrid.Columns>
        <my:DataGridTextColumn Binding="{Binding Path=ReqID}" Header="Request ID" />
        <my:DataGridTextColumn Binding="{Binding Path=LineID}" Header="Line ID" />
        <my:DataGridTextColumn Binding="{Binding Path=OrderID}" Header="Order ID" />
    </my:DataGrid.Columns>
</my:DataGrid>

这一切都非常好，当我从组合框中选择不同的选项时，数据网格会更改其项目源。

但是，数据网格会在我指定的值之上为 WeekData 项中的每个值添加一个额外的列。因此，使用我展示的示例，它将显示 3 列 reqID、lineID 和 OrderID，以及另外 3 列完全相同的内容，因此总共 6 列。

感谢任何帮助，我真的对这个问题摸不着头脑。

提前致谢，苏姆盖伊。

原文

OK I have a weird little issue I hope someone can help me with.

To set the scene, I first of all have an object:

public class Date
{
    public DateTime _WeekDate;
    public ICollectionView _WeekData;
}

I have a combobox which displays a list of the Date objects.

<ComboBox Name="cbPickupDate" ItemsSource="{Binding Path=PickupDates}" DisplayMemberPath="WeekDate" />

OK, now I take the selected date object's collection to provide an itemssource for my datagrid:

<my:DataGrid ItemsSource="{Binding ElementName=cbPickupDate, Path=SelectedItem.WeekData}">
    <my:DataGrid.Columns>
        <my:DataGridTextColumn Binding="{Binding Path=ReqID}" Header="Request ID" />
        <my:DataGridTextColumn Binding="{Binding Path=LineID}" Header="Line ID" />
        <my:DataGridTextColumn Binding="{Binding Path=OrderID}" Header="Order ID" />
    </my:DataGrid.Columns>
</my:DataGrid>

This all works very nicely, as I choose different options from the combobox the datagrid changes it's itemssource.

However, the datagrid adds an extra column for each value within my WeekData item on top of the ones I have specified. So using the example I've shown it would display 3 columns of reqID, lineID and OrderID and 3 more columns of exactly the same thing, so 6 in total.

Any help is appreciated, I'm really scratching my head over this one.

Thanks in advance,
SumGuy.

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这样的小城市 2024-12-12 17:48:26

关闭AutoGenerateColumns

<my:DataGrid ItemsSource="{Binding ElementName=cbPickupDate, Path=SelectedItem.WeekData}"
             AutoGenerateColumns="False">
    <my:DataGrid.Columns>
        <my:DataGridTextColumn Binding="{Binding Path=ReqID}" Header="Request ID" />
        <my:DataGridTextColumn Binding="{Binding Path=LineID}" Header="Line ID" />
        <my:DataGridTextColumn Binding="{Binding Path=OrderID}" Header="Order ID" />
    </my:DataGrid.Columns>
</my:DataGrid>

Turn off AutoGenerateColumns

<my:DataGrid ItemsSource="{Binding ElementName=cbPickupDate, Path=SelectedItem.WeekData}"
             AutoGenerateColumns="False">
    <my:DataGrid.Columns>
        <my:DataGridTextColumn Binding="{Binding Path=ReqID}" Header="Request ID" />
        <my:DataGridTextColumn Binding="{Binding Path=LineID}" Header="Line ID" />
        <my:DataGridTextColumn Binding="{Binding Path=OrderID}" Header="Order ID" />
    </my:DataGrid.Columns>
</my:DataGrid>

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