c# - 如何将用户定义的数据类型对象绑定(bind)到 DetailsView？

Question

您好，我有一个包含用户定义数据类型属性的类。我已经创建了该类的一个实例。当我将该类的那个对象绑定(bind)到 DetailsView 时，它显示除用户定义的数据类型属性之外的所有属性。这是示例代码。

public class Customer
{
    public string CustomerName { get; set; }
    public int Age { get; set; }
    public Address CustomerAddress { get; set; }
}

Address class looks like

public class Address
{
    public string Line1 { get; set; }
    public string Line2 { get; set; }
    public string City { get; set; }
}

Creating an object of Customer class

var cust = new Customer {
               CustomerName = "abc",
               Age = 25,
               CustomerAddress = new Address{ Line1 = "abc", Line2 = "abc", City = "abc" }};

Binding cust to Details View

List<Customer> customerInfo = new List<Customer>();
customerInfo.Add(cust);
DetailsView1.DataSource = custmerInfo;
DetailsView1.DataBind();

In .aspx page 

<asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False">
<Fields>
    <asp:BoundField DataField="CustomerName" HeaderText="Customer Name">
    <asp:BoundField DataField="Age" HeaderText="Customer Age">
    <asp:BoundField DataField="CustomerAddress" HeaderText="Customer Address ">
</Fields>
</asp:DetailsView>

以上代码未显示客户地址。谁能帮帮我？

Answer 1

绑定(bind)数据时，如果主类(此处为客户)有子类(此处为地址)，则要显示子类对象属性，我们需要使用<asp:TemplateField />。 .

因此，请使用以下示例:

<asp:TemplateField HeaderText=”City”>
    <ItemTemplate>
        <asp:Label ID=”customerCity” runat=”server” 
                   Text='<%# Eval("CustomerAddress.City") %>'></asp:Label>
    </ItemTemplate>
</asp:TemplateField>

下面的代码本来是可以工作的，但它不会:

<asp:BoundField DataField="CustomerAddress.City" HeaderText="City" />