从gridview数据源丢失字段？

Question

我正在加载一个gridview的对象列表，我无法调用aspx页面上的一些嵌套属性。我知道列表包含它们，并且可以返回它们，因为我使用了打印方法来调用有问题的几个属性。具体细节：提交对象包含嵌套对象Cust，Bro和SubCoverage，每个对象都有自己的属性，我将它们存储在列表中并尝试调用GridView。提交对象本身的属性显示正常，但是当我调用Cust对象的CustName1属性时，它是“在所选数据源上未找到字段”。由于我知道数据在那里，并且可以通过代码隐藏中的其他方法调用，所以我假设它是一种简单的语法，但是我已经尝试了足够多的迭代来让我怀疑是否有某些我错过了。它是什么？下面的代码：

//提交类/对象：

public class Submission 
{ 

    private int SubmissionId; 

    public int SubmissionId1 
    { 
     get { return SubmissionId; } 
     set { SubmissionId = value; } 
    } 

    private string Status; 

    public string Status1 
    { 
     get { return Status; } 
     set { Status = value; } 
    } 

    private string StatusComment; 

    public string StatusComment1 
    { 
     get { return StatusComment; } 
     set { StatusComment = value; } 
    } 


    private List<Product> Products = new List<Product>(); 

    public List<Product> Products1 
    { 
     get { return Products; } 
     set { Products = value; } 
    } 

    private Customer Cust; 
    public Customer _Cust 
    { 
     get { return Cust; } 
     set { Cust = value; } 
    } 
    private Broker Bro; 
    public Broker _Bro 
    { 
     get { return Bro; } 
     set { Bro = value; } 
    } 


    private SubmissionCoverage Subcov; 

    public SubmissionCoverage _SubCov 
    { 
     get { return Subcov; } 
     set { Subcov = value; } 
    } 

    public Submission() 
    { 
     Cust = new Customer(); 
     Bro = new Broker(); 
     Subcov = new SubmissionCoverage(); 
    } 
} 

//一个嵌套对象类，顾客：

public class Customer 

{

private int CustId; 

public int CustId1 
{ 
    get { return CustId; } 
    set { CustId = value; } 
} 


private string CustName; 

public string CustName1 
{ 
    get { return CustName; } 
    set { CustName = value; } 
} 


private string CustAddress; 

public string CustAddress1 
{ 
    get { return CustAddress; } 
    set { CustAddress = value; } 
} 


private string CustState; 

public string CustState1 
{ 
    get { return CustState; } 
    set { CustState = value; } 
} 

private string CustCity; 

public string CustCity1 
{ 
    get { return CustCity; } 
    set { CustCity = value; } 
} 


private int CustZip; 

public int CustZip1 
{ 
    get { return CustZip; } 
    set { CustZip = value; } 
} 

private int SicNaic; 

public int SicNaic1 
{ 
    get { return SicNaic; } 
    set { SicNaic = value; } 
} 

}

//查询/列表da Ta层：

Submission tempSubmission = new Submission(); 
     while (dr.Read()) 
     { 
      tempSubmission = new Submission(); 
      tempSubmission.SubmissionId1 = dr.GetInt32(0); 
      tempSubmission._Cust.CustName1 = dr.GetString(1); 
      tempSubmission._Cust.CustCity1 = dr.GetString(2); 
      tempSubmission._Cust.CustState1 = dr.GetString(3); 
      tempSubmission._Bro.BroName1 = dr.GetString(4); 
      tempSubmission._Bro.BroState1 = dr.GetString(5); 
      tempSubmission._Bro.Entity1 = dr.GetString(6); 
      tempSubmission._SubCov.Coverage1 = dr.GetInt32(7); 
      tempSubmission.Status1 = dr.GetString(8); 

      lstSubmission.Add(tempSubmission); 

     } 
     return lstSubmission; 
    } 

}

// GridView的代码：

<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="false" EmptyDataText="There are no data records to display." AllowPaging="True" 
    BackColor="White" BorderColor="#999999" BorderStyle="None" BorderWidth="1px" 
    CellPadding="3" GridLines="Vertical" HorizontalAlign="Center" 
    AllowSorting="True" > 
    <AlternatingRowStyle BackColor="#DCDCDC" /> 
<Columns> 

     <asp:BoundField DataField="SubmissionId1" HeaderText="Submission Id" 
      SortExpression="SubmissionId1" > 
     </asp:BoundField> 
     <asp:BoundField DataField="_Cust.CustName1" HeaderText="Customer" 
      SortExpression="tempsub._Cust.CustName1" /> 
     <asp:BoundField DataField="CustCity1" HeaderText="Customer City" 
      SortExpression="CustCity1" /> 
     <asp:BoundField DataField="CustState1" HeaderText="Customer State" 
      SortExpression="CustState1" /> 
     <asp:BoundField DataField="BroName1" HeaderText="Broker" 
      SortExpression="BroName1" /> 
     <asp:BoundField DataField="BroState1" HeaderText="Broker State" 
      SortExpression="BroState1" /> 
     <asp:BoundField DataField="Entity1" HeaderText="Entity Type" 
      SortExpression="Entity1" /> 
     <asp:BoundField DataField="Coverage" 
      HeaderText="Coverage" SortExpression="Coverage" 
      DataFormatString=" {0:c}" /> 
     <asp:BoundField DataField="Status1" HeaderText="Status" 
      SortExpression="Status1" /> 

     <asp:HyperLinkField DataNavigateUrlFields="SubmissionId" 
      DataNavigateUrlFormatString="View.aspx?SubmissionId={0}" Text="View" 
      HeaderText="View" /> 
     <asp:HyperLinkField DataNavigateUrlFields="SubmissionId" 
      DataNavigateUrlFormatString="ViewEdit.aspx?SubmissionId={0}" HeaderText="Edit" 
      Text="Edit" /> 

    </Columns> 

</asp:GridView> 

//最后，在证明了表示层的印刷方法，我不是疯了：

SubmissionService ss = new SubmissionService(); 
    List<Submission> SubmissionsList = ss.getAllSubmission(); 


    GridView2.DataSource = SubmissionsList; 
    GridView2.DataBind(); 

    Submission tempsub = SubmissionsList.First(); 
    Response.Write("Printing temp:" + tempsub._Cust.CustName1 + " total count is:" + SubmissionsList.Count()); // *This returns the correct data for whichever field I specify.* 

Answer 1

试试看这里：

http://www.dailycode.info/Blog/post/2009/01/11/ASPNet-GridView-databinding-a-subobject.aspx

在这个岗位的关键是使用一个TemplateField带有标签：

<asp:TemplateField HeaderText="Stock location description"> 
<ItemTemplate> 
    <asp:Label ID="lblCRCID" runat="server" 
    Text='<%# ((Namespace.TestStock)(Container.DataItem)).StockLocation.Description %>'> 
    </asp:Label> 
    </ItemTemplate> 
</asp:TemplateField> 
<asp:BoundField DataField="Description" HeaderText="Stock descrioption" /> 

HTH