gridview自定义分页

gridview里虽然有自动分页的功能，但是我们其实经常感觉不是很完善，比如，他没有页面直接跳转的功能，就是输入页数，然后跳转。还有他也没有显示记录的条数。其实，这些信息有时候是非常重要的。因此我们非常有必要实现这个功能。下面，我就讲述下如何实现自定义分页的。
一、首先要将gridview设置成可以分页，然后我们在增加如下代码：

<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" Width="98%" AllowPaging="True" OnPageIndexChanging="GridView1_PageIndexChanging" PageSize="20">

<asp:BoundField DataField="UserName" HeaderText="登陆用户名" >

</asp:BoundField>

<asp:BoundField DataField="Name" HeaderText="真实姓名">

</asp:BoundField>

<asp:BoundField DataField="PostName" HeaderText="职位" >

</asp:BoundField>

<asp:BoundField DataField="OrgName" HeaderText="组织" >

</asp:BoundField>

<asp:BoundField DataField="RoleName" HeaderText="角色" >

</asp:BoundField>

<asp:BoundField DataField="StateStr" HeaderText="当前状态" >

</asp:BoundField>

<asp:TemplateField HeaderText="操作">

<asp:LinkButton ID="LinkButtonEdit" runat="server" CommandArgument='<%# Eval("UserID") %>' OnClick="LinkButtonEdit_Click">编辑</asp:LinkButton>

<asp:LinkButton ID="LinkButtonDelete" runat="server" CommandArgument='<%# Eval("UserID") %>' OnClick="LinkButtonDelete_Click">删除</asp:LinkButton>

</ItemTemplate>

</asp:TemplateField>

</Columns>

<table border='0' cellpadding='0' cellspacing='0' style='border-right: coral 1px dotted;border-top: coral 1px dotted; border-left: coral 1px dotted; border-bottom: coral 1px dotted;background-color: #ffffff;200px;height:55px;'><tr><td align='center' style="height: 53px"><font color='coral'><b>没有任何数据<b></font></B></B></td></tr></table>

</EmptyDataTemplate>

<tr>

</td>

总共

<%=RecordCount%>

条记录当前第

<%#((GridView)Container.NamingContainer).PageIndex+1%>/<%#((GridView)Container.NamingContainer).PageCount %>

页

</div>

</td>

<asp:LinkButton ID="FirstPage" runat="server" CommandArgument="First" CommandName="Page" Enable="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>">第一页</asp:LinkButton>

<asp:LinkButton ID="PreviousPage" runat="server" CommandArgument="Prev" CommandName="Page" Enable="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>">上一页</asp:LinkButton>

<asp:LinkButton ID="NextPage" runat="server" CommandArgument="Next" CommandName="Page" Enable="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>">下一页</asp:LinkButton>

<asp:LinkButton ID="LastPage" runat="server" CommandArgument="Last" CommandName="Page" Enable="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>">最后一页</asp:LinkButton>

<asp:TextBox ID="TextGotoPage" runat="server" CssClass="pageeditbox"></asp:TextBox>

<asp:Button ID="PageGo" causesvalidation="False" commandargument="-1" commandname="Page" runat="server" CssClass="pagebutton" Text="Go" />

</div>

</td>

</div>

</td>

</tr>

</table>

</PagerTemplate>

</asp:GridView>

红色的部分就是自定义的分页代码，其实LinkButton里的CommandArgument参数就是gridview的当前页，CommandName表示触发的命令，这些都不能改。
注意里面有个RecordCount的变量，他是public类型，是从后台传过来的，表示记录的条数，测试的时候别忘了这个变量啊。

二、分页的代码

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

{

SetGridPage(sender, e,DtSource)

}

SetGridPage的函数

/// <summary>

/// 分页处理

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

/// <param name="dt"></param>

public void SetGridPage(object sender, GridViewPageEventArgs e,DataTable dt)

{

GridView theGrid = (GridView)sender; // refer to the GridView

int newPageIndex = 0;

GridViewRow pagerRow = theGrid.BottomPagerRow;

//GridViewRow pagerRow = theGrid.Controls[0].Controls[theGrid.Controls[0].Controls.Count - 1] as GridViewRow; // refer to PagerTemplate

//GridView较DataGrid提供了更多的API，获取分页块可以使用BottomPagerRow 或者TopPagerRow，当然还增加了HeaderRow和FooterRow

if (-2 == e.NewPageIndex)//点击按钮的事件

{

TextBox txtNewPageIndex = null;

if (null != pagerRow)

{

txtNewPageIndex = (TextBox)pagerRow.FindControl("TextGotoPage"); // refer to the TextBox with the NewPageIndex value

}

if (null != txtNewPageIndex && txtNewPageIndex .Text !="")

{

newPageIndex = int.Parse(txtNewPageIndex.Text) - 1; // get the NewPageIndex

}

else

{

newPageIndex = 0;

}

else

{

//当点击分页连接的时候

newPageIndex = e.NewPageIndex;

}

// 处理超出范围的分页

newPageIndex = newPageIndex < 0 ? 0 : newPageIndex;

newPageIndex = newPageIndex >= theGrid.PageCount ? theGrid.PageCount - 1 : newPageIndex;

((TextBox)pagerRow.FindControl("TextGotoPage")).Text = Convert.ToString(newPageIndex + 1);

//帮定数据源

theGrid.PageIndex = newPageIndex;

theGrid.DataSource = dt;
theGrid.DataBind();

}