DataGrid有多个标题

时间:2013-06-25 12:38:08

标签: wpf templates datagrid header row

我有一个填充数据的DataGrid。我想要做的是修改特定行的模板,以显示行和新标题。例如:

Header 1 | Header 2 | Header 3
Data   1 | Data   2 | Data   3                               (row 1)
Data   1 | Data   2 | Data   3                               (row 2)
Header 1 | Header 2 | Header 3 | Header 4 | Header 5         (row 3)
Data   1 | Data   2 | Data   3 | Data   4 | Data   5         (row 3)
Data   1 | Data   2 | Data   3                               (row 4)

Here is a screen shot illustrating my needs.

有没有办法实现这个目标?谢谢。

2 个答案:

答案 0 :(得分:2)

我终于找到了实现我想要做的事情的方法:

我使用从DataTemplateSelector派生的Selector设置DataGrid.ItemTemplateSelector属性。在这个选择器的SelectTemplate()方法中,我为正常行返回null(以应用默认模板),否则我创建并返回对应于特殊行的DataTemplate(动态地,感谢XamlReader)。此模板由DataGrid组成。 DataGrid的ItemsSource属性使用转换器设置(行数据转换为对象列表)。

答案 1 :(得分:1)

我设法创建了以下内容:

enter image description here

如果我理解正确,在这种情况下,您必须使用嵌套的DataGrid。这种效果可以通过DataGridTemplateColumn.CellTemplate -> your DataTemplate来实现。此外,模式应该是“正常”TextBlock,因此当嵌套DataGrid隐藏时它会显示一些值。我们将使用DataTrigger中的DataTemplate进行检查。

XAML代码:

    <DataGrid Name="SimpleDataGrid" AutoGenerateColumns="False" RowHeaderWidth="0" CanUserAddRows="False" CanUserResizeColumns="False" CanUserResizeRows="False" Loaded="SimpleDataGrid_Loaded">
        <DataGrid.Columns>
            <DataGridTemplateColumn Width="1.5*" Header="HeaderWithDataGrid" IsReadOnly="False">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Grid>
                            <!-- Nested DataGrid -->
                            <DataGrid Name="InsertedDataGrid" AutoGenerateColumns="False" RowHeaderWidth="0" Loaded="InsertedDataGrid_Loaded">
                                <DataGrid.Columns>
                                    <DataGridTextColumn Header="InsertedHeader1" Width="1.5*" Binding="{Binding Name}" IsReadOnly="False" />
                                    <DataGridTextColumn Header="InsertedHeader2" Width="1.5*" Binding="{Binding Age}" IsReadOnly="False" />
                                    <DataGridTextColumn Header="InsertedHeader3" Width="1.5*" Binding="{Binding Name}" IsReadOnly="False" />
                                </DataGrid.Columns>
                            </DataGrid>

                            <!-- Simply value, if nested DataGrid will be Hidden -->
                            <TextBlock Name="SimpleValue" Text="{Binding Age}" Visibility="Hidden" />
                        </Grid>

                        <DataTemplate.Triggers>
                            <!-- It checks for Hidden NestedDataGrid -->
                            <DataTrigger Binding="{Binding ShowInsertedGrid}" Value="Hidden">
                                <Setter TargetName="InsertedDataGrid" Property="Visibility" Value="Collapsed" />
                                <Setter TargetName="SimpleValue" Property="Visibility" Value="Visible" />
                            </DataTrigger>
                        </DataTemplate.Triggers>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>

            <!-- Simply column -->
            <DataGridTextColumn Header="SimpleHeader" Width="1.5*" Binding="{Binding Name}" IsReadOnly="False" />
        </DataGrid.Columns>
    </DataGrid>

Person类列表:

public class Person
{
    public string Name
    {
       get;
       set;
    }

    public int Age
    {
       get;
       set;
    }

    // For clarity using string. 
    // In real project using a bool.
    public string ShowInsertedGrid
    {
       get;
       set;
    }
}

DataGrid的两个ObservableCollection

private ObservableCollection<Person> DataForDataGrid = new ObservableCollection<Person>();
private ObservableCollection<Person> DataForInsertedDataGrid = new ObservableCollection<Person>();

主DataGrid的处理程序Loaded事件集数据:

    private void SimpleDataGrid_Loaded(object sender, RoutedEventArgs e)
    {
        DataForDataGrid.Add(new Person()
        {                
            Age = 2,
            Name = "Nick",
            ShowInsertedGrid = "Hidden", // Hidden NestedDataGrid
        });

        DataForDataGrid.Add(new Person()
        {
            Age = 1,
            Name = "Sam",
        });

        DataForDataGrid.Add(new Person()
        {
            Name = "Kate",
            Age = 15,
            ShowInsertedGrid = "Hidden",  // Hidden NestedDataGrid
        });

        SimpleDataGrid.ItemsSource = DataForDataGrid;            
    }
NestedDataGrid的

Loaded事件处理程序:

    private void InsertedDataGrid_Loaded(object sender, RoutedEventArgs e)
    {
        DataGrid MyDataGrid = sender as DataGrid;

        DataForInsertedDataGrid.Add(new Person()
        {
            Name = "Bob",
            Age = 15,
        });

        DataForInsertedDataGrid.Add(new Person()
        {
            Name = "SpanchBob",
            Age = 151,
        });

        MyDataGrid.ItemsSource = DataForInsertedDataGrid;
    }

使用Styles进行美观和改善外观。

修改

如果您希望嵌套DataGrid在整个上,那么我可以建议以下解决方案(不是它是最好的解决方案,但我只能提供这个):

enter image description here

对于每个单元格都将使用DataTemplate。因此SimpleHeader转化为:

            <DataGridTemplateColumn Width="1.5*" Header="SimpleHeader" IsReadOnly="False">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <Grid>
                            <!-- Nested DataGrid -->
                            <DataGrid Name="InsertedDataGrid2" AutoGenerateColumns="False" RowHeaderWidth="0" Loaded="InsertedDataGrid2_Loaded">
                                <DataGrid.Columns>
                                    <DataGridTextColumn Header="InsertedHeader4" Width="1.5*" Binding="{Binding Name}" IsReadOnly="False" />
                                    <DataGridTextColumn Header="InsertedHeader5" Width="1.5*" Binding="{Binding Age}" IsReadOnly="False" />
                                    <DataGridTextColumn Header="InsertedHeader6" Width="1.5*" Binding="{Binding Name}" IsReadOnly="False" />
                                </DataGrid.Columns>
                            </DataGrid>

                            <!-- Simply value, if nested DataGrid will be Hidden -->
                            <TextBlock Name="SimpleValue" Text="{Binding Name}" Visibility="Hidden" />
                        </Grid>

                        <DataTemplate.Triggers>
                            <!-- It checks for Hidden NestedDataGrid -->
                            <DataTrigger Binding="{Binding ShowInsertedGrid}" Value="Hidden">
                                <Setter TargetName="InsertedDataGrid2" Property="Visibility" Value="Collapsed" />
                                <Setter TargetName="SimpleValue" Property="Visibility" Value="Visible" />
                            </DataTrigger>
                        </DataTemplate.Triggers>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
            </DataGridTemplateColumn>

您在InsertedDataGrid2_Loaded设置数据的位置:

    private void InsertedDataGrid2_Loaded(object sender, RoutedEventArgs e)
    {
        DataGrid MyDataGrid = sender as DataGrid;

        DataForInsertedDataGrid2.Add(new Person()
        {
            Name = "Bob2",
            Age = 215,
        });

        DataForInsertedDataGrid2.Add(new Person()
        {
            Name = "SpanchBob2",
            Age = 251,
        });

        MyDataGrid.ItemsSource = DataForInsertedDataGrid2;
    }

对于使用DataGrid的每个列,以及为其加载数据的代码。因此,计算主要和嵌套DataGrid的列总数。