ASP.Net Gridview -> 如何在 GrdiView 的一行中显示数据集合？

Question

     I have a scenario where I will be showing a Customer data in a GridView. I have a Dictionary collection like this IDictionary<Customer, IList<CustomerOrder>>. 

第一个问题我可以将此字典绑定到 ASP.Net GridView 吗？

现在下一个问题，我想展示以下类型的用户界面，即在客户的一行中显示多个客户订单。

FName LastName OrderNumber MarkOrderCompleted(RadioButton) ABC DEF 123 单选按钮 是 否 345 单选按钮 是 否 678 单选按钮 是 否 GHI JKL 213 单选按钮 是 否 546 单选按钮 是 否 768 单选按钮 是 否

FName 和 LastName 将从 Dictionary 中的 Customer 对象填充，而 OrderNumber 和 MarkOrderCompleted 将从 CustomerOrders 填充。 下面是一个提交按钮，它根据订单将单选按钮状态值保存到数据库中。 立即提供帮助将不胜感激。提前谢谢...

Answer 1

您是否必须在同一个字典中同时包含 Customer 和 CustomerOrder？我会使用具有两个不同集合的嵌套网格。嵌套网格使用第一个网格的“DataKeyNames”属性作为参数。示例：

网格：

   <asp:GridView ID="CustomerGrid" runat="server" EnableModelValidation="True" 
        onrowdatabound="CustomerGrid_RowDataBound" DataKeyNames="CustomerId">
        <Columns>
            <asp:TemplateField HeaderText="Orders">
                <ItemTemplate>
                    <asp:GridView ID="OrderGrid" runat="server">
                    </asp:GridView>
                </ItemTemplate>
            </asp:TemplateField>
        </Columns>
    </asp:GridView>

后面的代码：

    List<Customer> CustomerList = new List<Customer>();
    List<Orders> Orders = new List<Orders>();

    protected void Page_Load(object sender, EventArgs e)
    {
        // Add some customers
        CustomerList.Add(new Customer() { CustomerId = 1, CompanyName = "TestCompany", FirstName = "John", LastName = "West" });
        CustomerList.Add(new Customer() { CustomerId = 2, CompanyName = "AnotherCompany", FirstName = "Alan", LastName = "East" });

        // Add some orders
        Orders.Add(new Orders() { CustomerId = 1, OrderId = 1, OrderDate = DateTime.Now, Sum = 300 });
        Orders.Add(new Orders() { CustomerId = 1, OrderId = 2, OrderDate = DateTime.Now, Sum = 600 });
        Orders.Add(new Orders() { CustomerId = 2, OrderId = 3, OrderDate = DateTime.Now, Sum = 2000 });
        Orders.Add(new Orders() { CustomerId = 2, OrderId = 4, OrderDate = DateTime.Now, Sum = 100 });

        // Bind customerlist to grid
        CustomerGrid.DataSource = CustomerList;
        CustomerGrid.DataBind();
    }

    protected void CustomerGrid_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            // Get customer id for row
            int customerId = (int)CustomerGrid.DataKeys[e.Row.RowIndex].Value;

            // Get the nested grid control
            GridView OrderGrid = e.Row.FindControl("OrderGrid") as GridView;

            // Get orders for customer
            OrderGrid.DataSource = Orders.Where(o => o.CustomerId == customerId);
            OrderGrid.DataBind();
        }
    }