Question

我试图在文本块中显示数据网格中所选行的所有主机名。

datagrid ItemsSource是从XML文件中提取的可观察系统集合。

我可以使用绑定将hostNameList.Text成功绑定到datagrid中的单个选定项目，但我不知道如何在选择多行时显示。数据网格可以在列出的系统数量上有所不同，因此我无法预测并且只有一定数量的文本块。

我已经接近实现这一目标，但问题是我必须更改datagrid中的选择以更新hostNameList.Text。我知道这就是selectionChanged事件的作用，但其他事件如MouseLeftButtonDown等也以类似的方式运行。我希望它能立即更新，就像绑定到一行selectedItem一样。

有什么想法吗？

下面是我所拥有的代码，除了它在数据网格中的选择发生变化之前不会更新。

的Xaml：

<DataGrid x:Name="ClientDataGrid"
      AutoGenerateColumns="False"
      AlternatingRowBackground="{StaticResource lightGreenBrush}"
      AlternationCount="2"
      CanUserAddRows="False"
      SelectionChanged="ClientDataGrid_SelectionChanged" >
<DataGrid.Columns>
    <DataGridCheckBoxColumn IsReadOnly="False"
                            Binding="{Binding IsChecked}" >
        <DataGridCheckBoxColumn.Header>
            <CheckBox x:Name="checkSelectAll"
                      Checked="checkSelectAll_Checked"
                      Unchecked="checkSelectAll_Unchecked" />
        </DataGridCheckBoxColumn.Header>
    </DataGridCheckBoxColumn>
    <DataGridTemplateColumn Header="Status">
        <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal"
                            HorizontalAlignment="Center" >
                    <Image Source="{Binding Path=Status, Converter={StaticResource statusImageConverter }}"
                           ToolTip="{Binding Path=Status}" />
                </StackPanel>
            </DataTemplate>
        </DataGridTemplateColumn.CellTemplate>
    </DataGridTemplateColumn>
    <DataGridTextColumn Header="Hostname"
                        Binding="{Binding Hostname}"
                        IsReadOnly="True" />
    <DataGridTextColumn Header="IP"
                        Binding="{Binding IP}"
                        IsReadOnly="True" />
    <DataGridTextColumn Header="Subnet Mask"
                        Binding="{Binding SubnetMask}"
                        IsReadOnly="True" />
    <DataGridTextColumn Header="Gateway"
                        Binding="{Binding Gateway}"
                        IsReadOnly="True" />
</DataGrid.Columns>

代码背后：

private ClientDataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    // Add all names to a list
    List<string> clientsSelected = new List<string>();

    foreach (Clients c in ClientDataGrid.ItemsSource)
    {
        if (c.IsChecked == true)
        {
            clientsSelected.Add(c.Hostname);
        }
    }

    //Build string of hostnames that are changing and set to textbox text
    hostNameList.Text = string.Join(", ", clientsSelected);
}

Answer 1

您可以在DataGrid行上为MouseUp事件添加事件处理程序：

<DataGrid.RowStyle>
    <EventSetter Event="MouseUp" Handler="DataGrid_MouseUp" />
</DataGrid.RowStyle>

代码隐藏（使用DataGrid的SelectedItems属性）：

private DataGrid_MouseUp(object sender, MouseButtonEventArgs e)
{
    // Add all names to a list
    List<string> clientsSelected = new List<string>();

    foreach (Clients c in ClientDataGrid.SelectedItems)
    {
        clientsSelected.Add(c.Hostname);
    }

    //Build string of hostnames that are changing and set to textbox text
    hostNameList.Text = string.Join(", ", clientsSelected);
}

Answer 2

行。我想出了一些对我有用的东西。我最终使用了DataGridTemplateColumn。再次感谢那些回复建议的人。非常感激！注意当我尝试使用SelectedItems属性时，它总是只列出选中的最后一个复选框，所以我改回了itemssource并且工作正常。

的Xaml：

<DataGrid x:Name="ClientDataGrid"
      AutoGenerateColumns="False"
      AlternatingRowBackground="{StaticResource lightGreenBrush}"
      AlternationCount="2"
      CanUserAddRows="False"
      SelectionChanged="ClientDataGrid_SelectionChanged" >
<DataGrid.Columns>
    <DataGridTemplateColumn>
        <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                <CheckBox IsChecked="{Binding IsChecked, UpdateSourceTrigger=PropertyChanged}"
                          Checked="CheckBox_Checked" />
            </DataTemplate>
        </DataGridTemplateColumn.CellTemplate>
    </DataGridTemplateColumn>
    <DataGridTemplateColumn Header="Status">
        <DataGridTemplateColumn.CellTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal"
                            HorizontalAlignment="Center" >
                    <Image Source="{Binding Path=Status, Converter={StaticResource statusImageConverter }}"
                           ToolTip="{Binding Path=Status}" />
                </StackPanel>
            </DataTemplate>
        </DataGridTemplateColumn.CellTemplate>
    </DataGridTemplateColumn>
    <DataGridTextColumn Header="Hostname"
                        Binding="{Binding Hostname}"
                        IsReadOnly="True" />
    <DataGridTextColumn Header="IP"
                        Binding="{Binding IP}"
                        IsReadOnly="True" />
    <DataGridTextColumn Header="Subnet Mask"
                        Binding="{Binding SubnetMask}"
                        IsReadOnly="True" />
    <DataGridTextColumn Header="Gateway"
                        Binding="{Binding Gateway}"
                        IsReadOnly="True" />
</DataGrid.Columns>

代码背后：

    private void CheckBox_Checked(object sender, RoutedEventArgs e)
    {
        // Add all names to a list
        List<string> clientsSelected = new List<string>();

        foreach (PrairieDeskClients client in prairieDeskClientDataGridConfigurationStep1.ItemsSource)
        {
            if (client.IsChecked == true)
            {
                clientsSelected.Add(client.Hostname);
            }
        }

        //Build string of hostnames that are changing
        applyChangesToTheseClients.Text = string.Join(", ", clientsSelected);
    }

将文本块文本绑定到多个数据网格行

2 个答案: