ASP.NET GridView嵌套DataList实例

最近做一个项目,需要用到GridView嵌类DataList的方式来实现数据的展示.弄了半天总算弄出来了,但还是有一些问题寻求高手解决.

先看WebForm:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default"%>
2

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4

<html xmlns="http://www.w3.org/1999/xhtml" >
6

<head runat="server">
7

<title>Example</title>
8

</head>
9

<body>
10

<form id="form1" runat="server">
11

<div>
12

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false"
13

onrowcreated="GridView1_RowCreated" onrowdatabound="GridView1_RowDataBound"
14

>
15

<Columns>
16

<asp:BoundField HeaderText="ID" DataField="ID" />
17

<%-- 模板控件，内部放一个DataList --%>
18

<asp:TemplateField HeaderText="Items">
19

<ItemTemplate>
20

<asp:DataList ID="DataList1" runat="server" RepeatColumns="5" OnItemCommand="DataList_ItemCommand" OnItemCreated="DataList_ItemCreated">
21

<ItemTemplate> <asp:LinkButton ID="LinkButton2" CommandArgument='<%#Eval("ID") %>' CommandName="EditNumber" runat="server">插</asp:LinkButton>
22

asdjfalskdfjasldf<%# Eval("ID") %>
23

<asp:LinkButton ID="LinkButton3" CommandArgument='<%#Eval("ID") %>' CommandName="EditNumber" runat="server">替</asp:LinkButton>
24

<asp:LinkButton ID="LinkButton1" CommandArgument='<%#Eval("ID") %>' CommandName="EditNumber" runat="server">删</asp:LinkButton>  
25

</ItemTemplate>
26

</asp:DataList>
27

</ItemTemplate>
28

</asp:TemplateField>
29

</Columns>
30

</asp:GridView>
31

</div>
32

</form>
33

</body>
34

</html>
35

再看CodeBehind:

Default.aspx.cs
1

public partial class _Default : System.Web.UI.Page
2

{
3

protected void Page_Load(object sender, EventArgs e)
4

{
5

if (!IsPostBack)
6

{
7

IList<Group> groups = new List<Group>();
8

for (int i = 0; i < 10; i++)
10

{
11

IList<Item> items = new List<Item>();
12

for (int j = 0; j < 5; j++)
13

{
14

items.Add(new Item { ID = j });
15

}
16

groups.Add(new Group { ID = i});
18

}
19

this.GridView1.DataSource = groups;
21

this.GridView1.DataBind();
22

}
23

}
24

protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
26

{
27

}
29

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
31

{
32

int id = 0;
33

if(e.Row.RowType == DataControlRowType.DataRow)
35

{
36

id = Convert.ToInt32(e.Row.Cells[0].Text);
37

DataList dl = (DataList)e.Row.Cells[1].FindControl("DataList1");
38

if (dl != null)
40

{
41

dl.DataSource = Group.GetItems(id);
42

dl.DataBind();
43

}
44

}
45

}
46

protected void DataList_ItemCommand(object sender, DataListCommandEventArgs e)
48

{
49

DataList dl = (DataList)sender;
50

Response.Write(e.CommandArgument.ToString());
52

}
53

protected void DataList_ItemCreated(object sender, DataListItemEventArgs e)
55

{
56

Item item = (Item)e.Item.DataItem;
57

DataList dl = (DataList)sender;
59

IList<Item> items = (IList<Item>)dl.DataSource;
61

if (item == items[items.Count - 1])
64

{
65

LinkButton lb = new LinkButton();
66

lb.ID = "AppendButton";
67

lb.Text = "增";
68

lb.CommandName = "Append";
69

lb.CommandArgument = item.ID.ToString();
70

e.Item.Controls.Add(lb);
71

}
72

}

再看数据源类的构造:

Code

最后的显示效果:

其中DataList控件可以像往常一样处理自己的事件.

最后只有两件事搞不清楚

一:如果把Group类改造成

public class Group
2

{
3

public int ID { get; set; }
4

public IList<Item> Items { get; set; }
6

}

如何在RowDataBound事件中将那一行的Items直接与DataList进行绑定?

二、能否在DataList事件中获得与DataList同行的数据值如GridView中的Eval("ID")值？

还望有高手赐教,静候!