protected System.Web.UI.WebControls.LinkButton Nextpage;
protected System.Web.UI.WebControls.LinkButton Lastpage;
protected System.Web.UI.WebControls.DataList datalist1;
protected System.Web.UI.WebControls.DropDownList mydroplist;
protected System.Web.UI.WebControls.Label LPageCount;
protected System.Web.UI.WebControls.Label LRecordCount;
protected System.Web.UI.WebControls.Label LCurrentPage;
protected System.Web.UI.WebControls.TextBox gotoPage;
const int PageSize=20;//定义每页显示记录
int PageCount,RecCount,CurrentPage,Pages,JumpPage;//定义几个保存分页参数变量
private void Page_Load(object sender, System.EventArgs e)
{
if(!IsPostBack)
{
RecCount = Calc();//通过Calc()函数获取总记录数
PageCount = RecCount/PageSize + OverPage();//计算总页数（加上OverPage()函数防止有余数造成显示
数据不完整）
ViewState["PageCounts"] = RecCount/PageSize -
ModPage();//保存总页参数到ViewState（减去ModPage()函数防止SQL语句执行时溢出查询范围，可以用存储过程分页算法来理解这句）
ViewState["PageIndex"] = 0;//保存一个为0的页面索引值到ViewState
ViewState["JumpPages"] = PageCount;//保存PageCount到ViewState，跳页时判断用户输入数是否超出页
码范围
//显示LPageCount、LRecordCount的状态
LPageCount.Text = PageCount.ToString();
LRecordCount.Text = RecCount.ToString();
//判断跳页文本框失效
if(RecCount <= 20)
gotoPage.Enabled = false;
TDataBind();//调用数据绑定函数TDataBind()进行数据绑定运算
}
}
//计算余页
public int OverPage()
{
int pages = 0;
if(RecCount%PageSize != 0)
pages = 1;
else
pages = 0;
return pages;
}
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