前些天我寫了關于 <<在存儲過程中實現分頁>>和<<gridview控件事件詳解 >> ,后來又有一些人問我怎樣在gridview中應用這個東東!其實很簡單,主要是怎么保存當前頁面的頁碼pageindex問題,不過把這個解決了什么都好辦了.因為在分頁過程中:pagesize是一定的,我們可以用一個屬性來表示.保存pageindex好多中方法,而且數據不是很龐大,基本不會好太多的資源.還是一句老話,話再多都沒有例子直觀.

  在這里我們將用一個隱藏字段來保存這個pageindex,即當前頁碼.當點擊上一頁時,將它的值減一,知道為0,要注意的一點這里的第一頁頁碼是0而不是1.下面看看代碼,然后我們再分析分析!
 1<asp:gridview id="newsgrid" runat="server" autogeneratecolumns="false" allowpaging="false" width="100%">
 2            <columns>
 3                <asp:boundfield datafield="newsid" headertext="新聞id"/>
 4                <asp:hyperlinkfield datanavigateurlfields="newsid" datanavigateurlformatstring="~/details.aspx?id={0}"
 5                    datatextfield="title" headertext="新聞標題"  itemstyle-width="70%"/>
 6                <asp:boundfield datafield="posttime" headertext="發布時間"/>
 7                <asp:commandfield headertext="新聞管理" showcancelbutton="false" showdeletebutton="true"
 8                    showeditbutton="true"/>
 9            </columns>
10        </asp:gridview>
11        <div >
12        <asp:hiddenfield id="currentpage" runat="server" value="0"/>
13        <asp:linkbutton id="first" runat="server" commandargument="first" onclick="pagerbutton_click">首 頁</asp:linkbutton>
14        <asp:linkbutton id="prev" runat="server" commandargument="prev" onclick="pagerbutton_click">上一頁</asp:linkbutton>
15        <asp:linkbutton id="next" runat="server" commandargument="next" onclick="pagerbutton_click">下一頁</asp:linkbutton>
16        <asp:linkbutton id="last" runat="server" commandargument="last" onclick="pagerbutton_click">尾 頁</asp:linkbutton>
17        </div>  cs文件中的代碼:
 1        protected void pagerbutton_click(object sender, eventargs e)
 2        {
 3            int pageindx = convert.toint32(currentpage.value);
 4            int totals = newsmanager.getnews(0, pagesize).totalrecords;
 5            int pages = (totals % pagesize) == 0 ? (totals / pagesize) : (totals / pagesize + 1);
 6            string arg = ((linkbutton)sender).commandargument.tostring().tolower();
 7            switch (arg)
 8            {
 9                case "prev":
10                    if (pageindx > 0)
11                    {
12                        pageindx -= 1;
13                    }
14                    break;
15                case "next":
16                    if (pageindx < pages - 1)
17                    {
18                        pageindx += 1;
19                    }
20                    break;
21                case "last":
22                    pageindx = pages - 1;
23                    break;
24                default:
25                    pageindx = 0;
26                    break;
27            }
28            currentpage.value = pageindx.tostring();
29            newsgrid.datasource = newsmanager.getnews(pageindx , pagesize).entities;
30            newsgrid.databind();
31        } 

  是不是很簡單啊,看了代碼就都懂了,關于用按鈕傳參數在這里就不多說了,還有一個就是entities屬性,在<<應用實體類entityset實現類似的范型功能 >>這篇文章中可以找到