GridView 梆定一个实体类

最新推荐文章于 2024-09-07 16:03:44 发布

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最新推荐文章于 2024-09-07 16:03:44 发布

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本文详细介绍了如何在ASP.NET应用中使用GridView控件来显示Customer实体类的数据。包括创建实体类、配置GridView控件、绑定数据源及实现行主键获取功能。

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1.先创建一个名为Customer的实体类,代码如下:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Cdm.LinqToXml
{
    public class Customer
    {
        public int ID { set; get; }
        public string Name { set; get; }
        public string Address { set; get; }
        public int Age { set; get; }
    }
}

2.在默认页面中添加GridView控件,代码如下:

<form id="form1" runat="server">
 <div>
     <asp:GridView ID="MyGv" runat="server" AutoGenerateColumns="False" 
      DataKeyNames="ID" onrowcommand="MyGv_RowCommand">
         <Columns>
             <asp:CommandField CausesValidation="false" ShowSelectButton="true" 
             ButtonType="Image"  SelectImageUrl="~/right.gif"/>
             <asp:BoundField DataField="ID" HeaderText="ID" />
             <asp:BoundField DataField="Name" HeaderText="Name" />
             <asp:BoundField DataField="Address" HeaderText="Address" />
             <asp:BoundField DataField="Age" HeaderText="Age" />
         </Columns>
     </asp:GridView>
 </div>
 </form>

注意在这里得写了一个得到当前行的主键的事件

onrowcommand="MyGv_RowCommand"

3.后到代码将给Customer这个实体类赋值,代码如下所示:

protected void Page_Load(object sender, EventArgs e)
       {
           List<Customer> list = new List<Customer>();
           list.Add(new Customer
           {
               ID = 1,
               Name = "caodaiming",
               Address = "四川",
               Age = 23
           });
           list.Add(new Customer
           {
               ID = 2,
               Name = "caodaiming",
               Address = "四川",
               Age = 23
           });
           list.Add(new Customer
           {
               ID = 4,
               Name = "caodaiming",
               Address = "四川",
               Age = 23
           });

           MyGv.DataSource = list;
           MyGv.DataBind();
       }

4.添加得到当前行的主键事件代码如下:

protected void MyGv_RowCommand(object sender, GridViewCommandEventArgs e)
      {
          object s = MyGv.DataKeys[int.Parse(e.CommandArgument.ToString())].Value;
          Response.Write(s.ToString());
      }

5.运行的效果如下图所示: