Asp.net 2.0 自定义控件开发[创建自定义HeaderRow的GridView控件][示例代码下载]

来源：互联网发布：软件测试月薪编辑：程序博客网时间：2024/05/13 07:21

(一). 概述

1. 做了个GridViewExtend自定义控件, 通过注册扩展自定义表头事件, 可以任意设置Header的格式.

2. 易重用代码, 只要将ExtendGridView.dll 文件添加到项目引用即可.

实现原理：增加一个自定义事件，并将GridView头(HeaderRow)引用作为事件参数传递，使用时通

过注册此事件来自定义头的布局，可以任意定制HeaderRow行数.

(二). 运行截图

(三). 使用步骤

1. 将ExtendGridView.dll 添加到自己的Web站点中, 并在设计器中添加一个GridViewExpendHeader控件.

2. 注册事件, 如图

3. 在后台代码事件中编写重构GridView's HeaderRow的事件

(四). 完整代码

1. 主控件类GridViewExpend.cs代码

1 ///

2 /// Author: ChengKing(ZhengJian)
3 ///

4     [ToolboxData("<{0}:GridViewExpendHeader runat=server>")]
5     public class GridViewExpendHeader : GridView
6     {
7         [Description("当需要重新构造Header时触发此事件")]
8         public event System.EventHandler RebuildHeader;
9
10         protected override void Render(HtmlTextWriter writer)
11         {
12             OnRebuildHeader();
13
14             base.Render(writer);
15         }
16         protected override void CreateChildControls()
17         {
18             base.CreateChildControls();
19         }
20
21         protected virtual void OnRebuildHeader()
22         {
23             //重新构造Head
24             if (RebuildHeader != null)
25             {
26                 RebuildHeaderEventArgs args = new RebuildHeaderEventArgs();
27                 args.GridViewObject = this;
28                 args.HeaderRowObject = this.HeaderRow;
29
30                 RebuildHeader(this, args);
31             }
32         }
33     }

2. RebuildHeaderEventArgs.cs 文件代码

1 ///

2 /// 承载重构Header事件所需的参数[Author:ChengKing(ZhengJian)]
3 ///

4     public class RebuildHeaderEventArgs : EventArgs
5     {
6         private GridViewExpendHeader _GridViewObject;
7         private GridViewRow _HeaderRowObject;
8
9         ///

10 /// 存储GrivViewExtend对象本身
11 ///

12         public GridViewExpendHeader GridViewObject
13         {
14             get
15             {
16                 return _GridViewObject;
17             }
18             set
19             {
20                 _GridViewObject = value;
21             }
22         }
23
24         ///

25 /// 存储GrivViewExtend的HeaderRow对象
26 ///

27         public GridViewRow HeaderRowObject
28         {
29             get
30             {
31                 return _HeaderRowObject;
32             }
33             set
34             {
35                 _HeaderRowObject = value;
36             }
37         }
38     }

3. 页面测试文件: default.aspx文件代码

1 <body>
2     <form id="form1" runat="server">
3     <div class="a">
4         <cc1:GridViewExpendHeader id="GridViewExpend1" runat="server" BackColor="White" BorderColor="#3366CC" BorderStyle="None" BorderWidth="1px" CellPadding="4" OnRebuildHeader="GridViewExpend1_RebuildHeader" >
5             <FooterStyle BackColor="#99CCCC" ForeColor="#003399" />
6             <RowStyle BackColor="White" ForeColor="#003399" />
7             <SelectedRowStyle BackColor="#009999" Font-Bold="True" ForeColor="#CCFF99" />
8             <PagerStyle BackColor="#99CCCC" ForeColor="#003399" HorizontalAlign="Left" />
9             <HeaderStyle BackColor="#003399" Font-Bold="True" ForeColor="#CCCCFF" />
10             <AlternatingRowStyle BackColor="Lavender" />
11         cc1:GridViewExpendHeader>
12
13     div>
14     form>
15 body>

4. 后台重构HeaderRow事件代码