1就一些核心代碼
2ClientInfo.cs和ClientinfoAccessObj.cs在學習一中有過了
3
4using System;
5using System.Data;
6using System.Configuration;
7using System.Collections;
8using System.Web;
9using System.Web.Security;
10using System.Web.UI;
11using System.Web.UI.WebControls;
12using System.Web.UI.WebControls.WebParts;
13using System.Web.UI.HtmlControls;
14using System.Collections.Generic;
15
16public partial class GridViewPagingTest : System.Web.UI.Page
17{
18 private int PageSize = 10; //每頁顯示記錄數
19
20 //當前頁碼，從1開始,利用ViewState在回發之間保存數據
21 private int curPage
22 {
23 get
24 {
25 return ViewState["curPage"] == null ? 0 : Convert.ToInt32(ViewState["curPage"]);
26 }
27 set
28 {
29 ViewState["curPage"] = value;
30 }
31 }
32
33 //總頁數,利用ViewState在回發之間保存數據
34 private int PageCount
35 {
36 get
37 {
38 return ViewState["PageCount"] == null ? 0 : Convert.ToInt32(ViewState["PageCount"]);
39 }
40 set
41 {
42 ViewState["PageCount"] = value;
43 }
44 }
45
46
47 protected void Page_Load(object sender, EventArgs e)
48 {
49 if (!IsPostBack)
50 {
51 //第一次請求
52 curPage = 1;
53 GridView1.DataSource = GetClientsForPage(curPage);//根據當前頁獲得客戶信息
54 lblInfo.Text = string.Format("第{0}頁/共{1}頁", 1, PageCount);
55 GridView1.DataBind();//綁定數據
56 }
57 }
58 //根據頁下標獲得頁面的客戶信息
59 private List<ClientInfo> GetClientsForPage(int pageIndex)
60 {
61 ClientInfoAccessObj accessor = new ClientInfoAccessObj();
62 List<ClientInfo> clients = accessor.GetAllClients();//獲得所有客戶信息
63 PageCount = clients.Count / PageSize + 1;//將客戶信息的總數除以每頁顯示的記錄數獲得總頁數
64 if (pageIndex > PageCount)
65 return null;
66 int StartIndex = (pageIndex - 1) * PageSize;//獲得數據下標
67 List<ClientInfo> ret = new List<ClientInfo>();
68 for (int i = StartIndex; i < StartIndex + PageSize && i < clients.Count; i++)
69 ret.Add(clients[i]);
70 return ret;
71 }
72 protected void btnNext_Click(object sender, EventArgs e)
73 {
74 if (curPage+1>PageCount)//判斷當前是否大於頁總數
75 {
76 curPage = PageCount;
77 }
78 else
79 {
80 curPage++;
81 }
82 GridView1.DataSource = GetClientsForPage(curPage);
83 lblInfo.Text = string.Format("第{0}頁/共{1}頁", curPage, PageCount);
84 GridView1.DataBind();
85 }
86 protected void btnPrew_Click(object sender, EventArgs e)
87 {
88 if (curPage - 1 ==0 )//判斷當前是否大於頁總數
89 {
90 curPage = 1;
91 }
92 else
93 {
94 curPage--;
95 }
96 GridView1.DataSource = GetClientsForPage(curPage);
97 lblInfo.Text = string.Format("第{0}頁/共{1}頁", curPage, PageCount);
98 GridView1.DataBind();
99 }
100 protected void btnGo_Click(object sender, EventArgs e)
101 {
102 try
103 {
104 int pageIndex = Convert.ToInt32(txtPageIndex.Text);
105 if (pageIndex > PageCount)
106 {
107 pageIndex = PageCount;
108 }
109 if (pageIndex < 1)
110 {
111 pageIndex = 1;
112 }
113 curPage = pageIndex;
114 GridView1.DataSource = GetClientsForPage(curPage);
115 lblInfo.Text = string.Format("第{0}頁/共{1}頁", curPage, PageCount);
116 GridView1.DataBind();
117 }
118 catch (Exception ex)
119 {
120 ClientScript.RegisterClientScriptBlock(this.GetType(),"info","alert('非法字符');",true);//向頁面注入javaScript腳本
121 }
122 }
123}
124
