asp.net 源码保存 用程序分页

源码：

namespace alex
{
public class pagetools
{
/// <summary>
/// 表名称
/// </summary>
private string tablename;
public string tablename
{
get { return tablename; }
set { tablename = value; }
}
/// <summary>
/// 返回的列名
/// </summary>
private string returncolumns;
public string returncolumns
{
get { return returncolumns; }
set { returncolumns = value; }
}
/// <summary>
/// 条件
/// </summary>
private string where;
public string where
{
get { return where; }
set { where = value; }
}
/// <summary>
/// 排序列
/// </summary>
private string ordercolumnname;
public string ordercolumnname
{
get { return ordercolumnname; }
set { ordercolumnname = value; }
}
/// <summary>
/// 排序，true为降序
/// </summary>
private boolean orderdesc;
public boolean orderdesc
{
get { return orderdesc; }
set { orderdesc = value; }
}
/// <summary>
/// 主键
/// </summary>
private string keycolumnname;
public string keycolumnname
{
get { return keycolumnname; }
set { keycolumnname = value; }
}
/// <summary>
/// 页面大小
/// </summary>
private int32 pagesize;
public int32 pagesize
{
get { return pagesize; }
set { pagesize = value; }
}
/// <summary>
/// 第几页
/// </summary>
private int32 pageindex;
public int32 pageindex
{
get { return pageindex; }
set { pageindex = value; }
}
/// <summary>
/// sql参数
/// </summary>
private sqlparameter[] whereparams;
public sqlparameter[] whereparams
{
get { return whereparams; }
set { whereparams = value; }
}
/// <param name="tablename"></param>
/// <param name="returncolumns"></param>
/// <param name="where">条件</param>
/// <param name="ordercolumnname">排序列</param>
/// <param name="orderdesc">排序，true为降序</param>
/// <param name="keycolumnname">主键</param>
/// <param name="pagesize">页面大小</param>
/// <param name="pageindex">第几页</param>
/// <param name="whereparams">sql参数</param>
public pagetools(string tablename, string returncolumns, string where, string ordercolumnname, boolean orderdesc,
string keycolumnname, int32 pagesize, int32 pageindex, params sqlparameter[] whereparams)
{
this.tablename = tablename;
this.returncolumns = returncolumns;
this.where = where;
this.ordercolumnname = ordercolumnname;
this.orderdesc = orderdesc;
this.keycolumnname = keycolumnname;
this.pagesize = pagesize;
this.pageindex = pageindex;
this.whereparams = whereparams;
}
public pagetools() { }
public datatable retrievepagerdata()
{
if (pageindex == 1)
{
return retrievetopdata();
}
else
{
string sql = string.format("select top {0} {1} from {2} where {3} and {6} not in ( select top {7} {6} from {2} where {3} order by {4} {5} ) order by {4} {5}", pagesize, returncolumns, tablename, where, ordercolumnname, orderdesc == true ? "desc" : string.empty, keycolumnname, pagesize * (pageindex - 1));
return dbhelpersql.query(sql, checknull(whereparams)).tables[0];
}
}
/// <summary>
/// 获取数据的条数
/// </summary>
/// <param name="tablename"></param>
/// <param name="where"></param>
/// <param name="whereparams"></param>
/// <returns></returns>
public int32 retrievedatacount()
{
string sql = string.format("select count(*) from {0} where {1}" , tablename, where);
int32 result = (int32)dbhelpersql.getsingle(sql, checknull(whereparams));
return result;
}
/// <summary>
/// 获取第一页
/// </summary>
/// <param name="top"></param>
/// <param name="tablename"></param>
/// <param name="returncolumns"></param>
/// <param name="where"></param>
/// <param name="ordercolumnname"></param>
/// <param name="orderdesc"></param>
/// <param name="whereparams"></param>
/// <returns></returns>
public datatable retrievetopdata()
{
string sql = string.format("select top {0} {1} from {2} where {3} order by {4} {5}", pagesize, returncolumns, tablename, where, ordercolumnname, orderdesc == true ? "desc" : string.empty);
return dbhelpersql.query(sql, whereparams).tables[0];
}
/// <summary>
/// 移除空参数
/// </summary>
/// <param name="whereparams"></param>
/// <returns></returns>
private sqlparameter[] checknull(sqlparameter[] paras)
{
if (paras == null)
{
return null;
}
list<sqlparameter> list = new list<sqlparameter>();
foreach (sqlparameter para in paras)
{
if (para != null) list.add(para);
}
return list.toarray();
}
}
}

页面后台：

public partial class _default : system.web.ui.page
{
protected void page_load(object sender, eventargs e)
{
recordcount = page.retrievedatacount();
totalpages = (int)(math.ceiling((double)recordcount / (double)page.pagesize));
if (!ispostback)
{
binddata();
}
}
alex.pagetools page = new alex.pagetools("test", "*", "1=1", "user_account", false, "user_account", 10, 1, null);
int recordcount;
public int totalpages;

private void binddata()
{
int pageindex = smartgridview1.pageindex;
if(totalpages>0)
{
if(pageindex>totalpages-1)
{
pageindex=totalpages-1;
}
}
else
{
pageindex=0;
}
smartgridview1.pageindex=pageindex;
page.pageindex=pageindex+1;
smartgridview1.datasource = page.retrievepagerdata();
smartgridview1.databind();
if (this.smartgridview1.pageindex == 0)
{
this.btnfirst.enabled = false;
this.btnprev.enabled = false;
if (totalpages == 1)
{
this.btnlast.enabled = false;
this.btnnext.enabled = false;
}
}
else if (this.smartgridview1.pageindex == totalpages - 1)
{
this.btnlast.enabled = false;
this.btnnext.enabled = false;
}
this.lblpagesum.text = totalpages.tostring();
this.lblpage.text = (pageindex + 1).tostring();
this.lblrowscount.text = recordcount.tostring();
}
public void navigatetopage(object sender, commandeventargs e)
{
btnfirst.enabled = true;
btnprev.enabled = true;
btnnext.enabled = true;
btnlast.enabled = true;
string pageinfo = e.commandargument.tostring();
switch (pageinfo)
{
case "prev":
if (this.smartgridview1.pageindex > 0)
{
this.smartgridview1.pageindex -= 1;
}
break;
case "next":
if (this.smartgridview1.pageindex < (totalpages - 1))
{
this.smartgridview1.pageindex += 1;
}
break;
case "first":
this.smartgridview1.pageindex = 0;
break;
case "last":
this.smartgridview1.pageindex = totalpages - 1;
break;
}
if (this.smartgridview1.pageindex == 0)
{
btnfirst.enabled = false;
btnprev.enabled = false;
if (totalpages == 1)
{
btnlast.enabled = false;
btnnext.enabled = false;
}
}
else if (this.smartgridview1.pageindex == totalpages - 1)
{
btnlast.enabled = false;
btnnext.enabled = false;
}
binddata();
}
protected void gobtnclick(object sender, eventargs e)
{
int gopageindex = convert.toint32(this.gocount.text.trim());
if (gopageindex > 0)
{
if (gopageindex >= totalpages)
{
this.smartgridview1.pageindex = totalpages - 1;
}
else
{
this.smartgridview1.pageindex = gopageindex - 1;
}
}
else if(gopageindex <=0)
{
this.smartgridview1.pageindex = 0;
}
if (this.smartgridview1.pageindex == 0)
{
btnfirst.enabled = false;
btnprev.enabled = false;
btnlast.enabled = true;
btnnext.enabled = true;
if (totalpages == 1)
{
btnlast.enabled = false;
btnnext.enabled = false;
}
}
else if (this.smartgridview1.pageindex == totalpages - 1)
{
btnlast.enabled = false;
btnnext.enabled = false;
btnfirst.enabled = true;
btnprev.enabled = true;
}
else
{
btnlast.enabled = true;
btnfirst.enabled = true;
btnnext.enabled = true;
btnprev.enabled = true;
}
binddata();
}

页面前台：

代码

<%@ page language="c#" theme="msn_blue" autoeventwireup="true" codefile="default.aspx.cs" inherits="_default" %>
<%@ register assembly="smartgridview" namespace="bosswwebui.smartgridview" tagprefix="uc1" %>
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<script type="text/javascript">
function validate() {
var gocount=document.getelementbyid("gocount").value;
if(gocount=="")
{
alert("请先填写你要导航的页面");
return false;
}
var result;
if(isnan(gocount))
{
alert("请输入合法的数字");
document.getelementbyid("gocount").value="";
return false;
}
if(parseint(gocount)<=0|| parseint(gocount)><%=this.totalpages %>)
{
alert("数字溢出");
document.getelementbyid("gocount").value="";
return false;
}
return true;
}
</script>
<form id="form1" runat="server">
<div>
<table cellspacing="0" cellpadding="0" width="98%" align="center" border="0">
<tr id="trgrid" runat="server">
<td align="left">
○ 页次：<asp:label id="lblpage" runat="server" ></asp:label>/
<asp:label id="lblpagesum" runat="server"></asp:label>，共：<asp:label
id="lblrowscount" runat="server"></asp:label>条</td>
<td align="right">
<asp:linkbutton id="btnfirst" runat="server" oncommand="navigatetopage"
commandargument="first" commandname="pager" text="首 页">[首 页]</asp:linkbutton><asp:linkbutton
id="btnprev" runat="server" commandargument="prev" oncommand="navigatetopage"
commandname="pager" text="上一页">[上一页]</asp:linkbutton><asp:linkbutton id="btnnext"
runat="server" commandargument="next" oncommand="navigatetopage"
commandname="pager" text="下一页">[下一页]</asp:linkbutton><asp:linkbutton id="btnlast"
runat="server" commandargument="last" oncommand="navigatetopage"
commandname="pager" text="尾 页" >[尾 页]</asp:linkbutton>
<asp:textbox id=gocount runat="server" width="50px"></asp:textbox>
<asp:button id="gobtn" runat="server" text="go" onclientclick="return validate();" onclick="gobtnclick" /></td>
</tr>
</table>
<table cellspacing="0" cellpadding="0" width="98%" align="center" border="0">
<tr>
<td>
<uc1:smartgridview id="smartgridview1" skinid="blue" runat="server"
pagingstyle="default"
cssclassmouseover="grid_over" enableviewstate="false"
autogeneratecolumns="false"
width="100%" currentlanguage="">
<columns>
<asp:templatefield>
<headertemplate>
<asp:checkbox id="headcheckbox" runat="server" />
</headertemplate>
<itemtemplate>
<asp:checkbox id="checkitem" runat="server" __designer:wfdid="w1"></asp:checkbox>
</itemtemplate>
<headerstyle cssclass="tdcell" />
<itemstyle horizontalalign="center" width="5px" cssclass="tdcell" />
</asp:templatefield>
<asp:boundfield datafield="user_account" headertext="用户帐号" sortexpression="user_account">
<headerstyle cssclass="tdcell" />
<itemstyle horizontalalign="center" cssclass="tdcell" />
</asp:boundfield>
<asp:boundfield datafield="user_dspname" headertext="显示名称" sortexpression="user_dspname">
<headerstyle cssclass="tdcell" />
<itemstyle horizontalalign="center" cssclass="tdcell" />
</asp:boundfield>
<asp:boundfield datafield="user_dspengname" headertext="英文名" sortexpression="user_dspengname" >
<headerstyle cssclass="tdcell" />
<itemstyle cssclass="tdcell" horizontalalign="center" />
</asp:boundfield>
<asp:boundfield datafield="user_hrid" headertext="员工号" sortexpression="user_hrid" >
<headerstyle cssclass="tdcell" />
<itemstyle cssclass="tdcell" horizontalalign="center" />
</asp:boundfield>
<asp:boundfield datafield="user_email" headertext="邮件地址" sortexpression="user_email">
<headerstyle cssclass="tdcell" />
<itemstyle horizontalalign="center" cssclass="tdcell" />
</asp:boundfield>
<asp:boundfield datafield="user_title" headertext="职 称" sortexpression="user_title">
<headerstyle cssclass="tdcell" />
<itemstyle horizontalalign="center" cssclass="tdcell" />
</asp:boundfield>
<asp:boundfield datafield="user_tel" headertext="电 话" sortexpression="user_tel">
<headerstyle cssclass="tdcell" />
<itemstyle horizontalalign="center" cssclass="tdcell" />
</asp:boundfield>
<asp:boundfield datafield="user_active" headertext="是否有效" sortexpression="user_active">
<headerstyle cssclass="tdcell" />
<itemstyle horizontalalign="center" cssclass="tdcell" />
</asp:boundfield>
<asp:boundfield datafield="user_major" headertext="专业" sortexpression="user_major" >
<headerstyle cssclass="tdcell" horizontalalign="center" />
<itemstyle cssclass="tdcell" horizontalalign="center" />
</asp:boundfield>
</columns>
<headerstyle cssclass="thhead" />
<fixrowcol tableheight="" tablewidth="" />
<rowstyle cssclass="tdcell" />
</uc1:smartgridview>
</td></tr>
</table>
</div>
</form>
</body>
</html>