c# - DataGrid 具有用于 WPF 中第 n 级单元格的 DataGrid

Question

我需要创建一个 DataGrid 来显示 WPF 中的对象集合。该集合在运行时出现，并且大多数时候都不同。

对象的属性还可以是一个集合。因此每个单元格本身应该能够显示一个子DataGrid，并且可以扩展到第n 级。

如何在 WPF 中创建这样的 DataGrid？

Answer 1

您可以使用分层数据模板来实现此目的。

例如，请参阅下面的 MVVM 模式代码。

模型.cs

public class Person
{
    ObservableCollection<Person> MyCollection {get; set;}
}

视图模型.cs

public class PersonModel
{
    ObservableCollection Collection {get; set;}
}

XAML 代码（查看）

<Window.DataContext>
    <local:PersonModel/>
</Window.DataContext>
<Grid>
    <DataGrid  ItemsSource="{Binding Collection}" >
        <DataGrid.RowDetailsTemplate>
            <HierarchicalDataTemplate ItemsSource="{Binding SelectedItem.MyCollection}">
                <DataGrid RowDetailsTemplate="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGrid}},Path=RowDetailsTemplate}" ItemsSource="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type DataGrid}},Path=SelectedItem.MyCollection}">                   
                </DataGrid>
            </HierarchicalDataTemplate>
        </DataGrid.RowDetailsTemplate>
    </DataGrid>
</Grid>

希望对你有帮助.....

Answer 2

If all the data will be dynamic, then I would say the recommended approach would be to create your DataGrid on code-behind, and populate its columns according to your necessities. There is a DataGridTemplateColumn1 class that I think will help you. You can assign a DataTemplate to this column via the CellTemplate property.

You can create that DataTemplatevia XAML or code-behind. And of course that template can contain a DataGrid. You won't be able to databind the DataGridTemplateColumn itself, but you can databind the elements inside the DataTemplate.

DataGridTemplateColumn at MSDN

Example

This is a simple example of how to do it in XAML, like I said if you need dynamic datagrids then you have to do it in code-behind. I hope this helps.

MainWindow.xaml

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:System="clr-namespace:System;assembly=mscorlib" x:Class="TestStackoverflow.MainWindow"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid>
            <Grid.Resources>
                <!--DataTemplate for Published Date column defined in Grid.Resources.  PublishDate is a property on the ItemsSource of type DateTime -->
                <DataTemplate x:Key="DateTemplate" >
                    <DataGrid AutoGenerateColumns="False" >
                        <DataGrid.Columns>
                            <DataGridTextColumn Header="Second grid column" Binding="{Binding ''}" ClipboardContentBinding="{x:Null}"/>
                        </DataGrid.Columns>
                        <System:String>I heard you like</System:String>
                        <System:String>datagrids so</System:String>
                        <System:String>I put a datagrid in</System:String>
                        <System:String>your data datagrid</System:String>
                        <System:String>so you can grid while you grid.</System:String>
                    </DataGrid>
                </DataTemplate>
            </Grid.Resources>
            <DataGrid AutoGenerateColumns="False" >
                <DataGrid.Columns>
                    <DataGridTemplateColumn Header="Original Datagrid DG Column" CellTemplate="{StaticResource DateTemplate}" />
                    <DataGridTextColumn Header="Original Datagrid Text Column" Binding="{Binding ''}" ClipboardContentBinding="{x:Null}"/>
                </DataGrid.Columns>
                <System:String>String 1</System:String>
                <System:String>String 2</System:String>
                <System:String>String 3</System:String>
                <System:String>String 4</System:String>
                <System:String>String 5</System:String>
            </DataGrid>
        </Grid>
    </Grid>
</Window>

Answer 3

您可以使用 datagrid 控件并将其 itemsource 设置为要在每一行中显示的可观察数据集合。并且对于每一行，您还可以根据需要设置其内容模板。此内容模板的控件数据也可以使用绑定来设置。