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"%>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" >
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<head runat="server">
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<title>Example</title>
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</head>
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<body>
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<form id="form1" runat="server">
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<div>
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<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false"
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onrowcreated="GridView1_RowCreated" onrowdatabound="GridView1_RowDataBound"
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>
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<Columns>
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<asp:BoundField HeaderText="ID" DataField="ID" />
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<%-- 模板控件，内部放一个DataList --%>
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<asp:TemplateField HeaderText="Items">
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<ItemTemplate>
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<asp:DataList ID="DataList1" runat="server" RepeatColumns="5" OnItemCommand="DataList_ItemCommand" OnItemCreated="DataList_ItemCreated">
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<ItemTemplate> <asp:LinkButton ID="LinkButton2" CommandArgument='<%#Eval("ID") %>' CommandName="EditNumber" runat="server">插</asp:LinkButton>
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asdjfalskdfjasldf<%# Eval("ID") %>
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<asp:LinkButton ID="LinkButton3" CommandArgument='<%#Eval("ID") %>' CommandName="EditNumber" runat="server">替</asp:LinkButton>
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<asp:LinkButton ID="LinkButton1" CommandArgument='<%#Eval("ID") %>' CommandName="EditNumber" runat="server">删</asp:LinkButton>  
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</ItemTemplate>
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</asp:DataList>
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</ItemTemplate>
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</asp:TemplateField>
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</Columns>
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</asp:GridView>
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</div>
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</form>
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</body>
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</html>
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再看CodeBehind:

Default.aspx.cs
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public partial class _Default : System.Web.UI.Page
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{
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protected void Page_Load(object sender, EventArgs e)
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{
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if (!IsPostBack)
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{
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IList<Group> groups = new List<Group>();
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for (int i = 0; i < 10; i++)
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{
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IList<Item> items = new List<Item>();
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for (int j = 0; j < 5; j++)
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{
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items.Add(new Item { ID = j });
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}
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groups.Add(new Group { ID = i});
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}
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this.GridView1.DataSource = groups;
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this.GridView1.DataBind();
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}
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}
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protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
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{
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}
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protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
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{
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int id = 0;
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if(e.Row.RowType == DataControlRowType.DataRow)
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{
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id = Convert.ToInt32(e.Row.Cells[0].Text);
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DataList dl = (DataList)e.Row.Cells[1].FindControl("DataList1");
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if (dl != null)
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{
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dl.DataSource = Group.GetItems(id);
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dl.DataBind();
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}
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}
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}
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protected void DataList_ItemCommand(object sender, DataListCommandEventArgs e)
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{
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DataList dl = (DataList)sender;
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Response.Write(e.CommandArgument.ToString());
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}
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protected void DataList_ItemCreated(object sender, DataListItemEventArgs e)
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{
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Item item = (Item)e.Item.DataItem;
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DataList dl = (DataList)sender;
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IList<Item> items = (IList<Item>)dl.DataSource;
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if (item == items[items.Count - 1])
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{
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LinkButton lb = new LinkButton();
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lb.ID = "AppendButton";
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lb.Text = "增";
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lb.CommandName = "Append";
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lb.CommandArgument = item.ID.ToString();
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e.Item.Controls.Add(lb);
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}
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}

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
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{
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public int ID { get; set; }
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public IList<Item> Items { get; set; }
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}

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!

posted on 2008-06-22 22:03 吴辉军阅读(2492) 评论(1) 收藏举报

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