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The author:(作者)归海一刀
published in(发表于) 2014/1/30 1:13:45
自定义分页控件源码asp.net(c#)_[Asp.Net教程]

自定义分页控件源码asp.net(c#)

Pager.cs 服务器控件源代码

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;

namespace C_Pager
{
public class Pager : Control, INamingContainer
{
[Description("操作员选择不同页时产生的页更新事件，通过此事件处理把旧页面显示信息更新到选择页对应的数据信息")]
public event EventHandler PageChanged;

private int rectotal = 0;
private int pagesize = 10;
private int curpage = 0;
private int lang = 0 ;
private int pagetotal = 0;

private string firstpagetext ="9";
private string prevpagetext = "3";
private string nextpagetext = "4";
private string lastpagetext = ":";

protected virtual void temp_Click(object sender, EventArgs e)
{
if (PageChanged != null)
{
PageChanged(this,e);
}
}

Pager控件使用帮助及参数说明#region Pager控件使用帮助及参数说明
/**//*
本控件带有三个自定义属性和一个方法.具体如下:
属性:
RecTotal 记录总数 默认值:0
PageSize 每页记录数 默认值:0
CurPage 当前页 默认值:0
Lang 版本语言 默认值:0 注:0为中文版,1为英文版
方法:
PagerBind 绑定当前自定义控件,如不绑定,该控件则不能显示到页面上
*/
#endregion

控件属性列表#region 控件属性列表

[Category("分页控制"),Description("数据集所有页记录总数")]
public int RecTotal
{
get { return rectotal; }
set { rectotal = value; }
}

[Category("分页控制"),Description("每页显示记录数量")]
public int PageSize
{
get { return pagesize; }
set { pagesize = value; }
}

[Category("分页控制"),Description("当前显示页")]
public int CurPage
{
get { return curpage; }
set { curpage = value; }
}

[Category("分页控制"),Description("数据集页总数")]
public int PageTotal
{
set { pagetotal = value; }
}

[Category("分页控制"),Description("翻页条显示语言别，０为中文，１为英文")]
public int Lang
{
get { return lang; }
set { lang = value; }
}

[Category("分页控制"),Description("首页按钮文本,例如可用：第一页")]
public string FirstPageText //
{
get { return firstpagetext; }
set { firstpagetext = value; }
}

[Category("分页控制"),Description("前页按钮文本,例如可用：上一页")]
public string PrevPageText
{
get { return prevpagetext; }
set { prevpagetext = value; }
}

[Category("分页控制"),Description("下页按钮文本,例如可用：下一页")]
public string NextPageText
{
get { return nextpagetext; }
set { nextpagetext = value; }
}

[Category("分页控制"),Description("尾页按钮文本,例如可用：最后页")]
public string LastPageText
{
get { return lastpagetext; }
set { lastpagetext = value; }
}

#endregion

protected override void CreateChildControls()
{
ViewState["FirstPageText"]= firstpagetext;
ViewState["PrevPageText"] = prevpagetext;
ViewState["NextPageText"] = nextpagetext;
ViewState["LastPageText"] = lastpagetext;

Label lbl_PageInfo = new Label(); //0
lbl_PageInfo.Text = "尚未绑定";
Controls.Add(lbl_PageInfo);

LinkButton btn_First = new LinkButton(); //1
btn_First.Text = ViewState["FirstPageText"].ToString();
Controls.Add(btn_First);
btn_First.Visible = false;
btn_First.Click += new System.EventHandler(btn_First_Click);

Controls.Add(new LiteralControl(" ")); //2

LinkButton btn_Pre = new LinkButton(); //3
btn_Pre.Text = ViewState["PrevPageText"].ToString();
Controls.Add(btn_Pre);
btn_Pre.Visible = false;
btn_Pre.Click += new System.EventHandler(btn_Pre_Click);

Controls.Add(new LiteralControl(" ")); //4

LinkButton btn_Next = new LinkButton(); //5
btn_Next.Text = ViewState["NextPageText"].ToString();
Controls.Add(btn_Next);
btn_Next.Visible = false;
btn_Next.Click += new System.EventHandler(btn_Next_Click);

Controls.Add(new LiteralControl(" ")); //6

LinkButton btn_Last = new LinkButton(); //7
btn_Last.Text = ViewState["LastPageText"].ToString();
Controls.Add(btn_Last);
btn_Last.Visible = false;
btn_Last.Click += new System.EventHandler(btn_Last_Click);

Controls.Add(new LiteralControl("  ")); //8

Label lbl_1 = new Label(); //9
lbl_1.Text = "转到";
lbl_1.Visible = false;
Controls.Add(lbl_1);

DropDownList drop_CurPage = new DropDownList(); //10
drop_CurPage.Items.Add("0");
Controls.Add(drop_CurPage);
drop_CurPage.AutoPostBack = true;
drop_CurPage.Visible = false;
drop_CurPage.SelectedIndexChanged += new System.EventHandler(drop_CurPage_SelectedIndexChanged);

Label lbl_2 = new Label(); //11
lbl_2.Text = "页";
lbl_2.Visible = false;
Controls.Add(lbl_2);
}

protected override void OnPreRender(EventArgs e)
{
if (!Page.IsPostBack)
{
StartVar();
PagerBind();
}
}

protected void StartVar() //初始各参数．希望只执行一次
{
ViewState["RecTotal"] = rectotal;
ViewState["PageSize"] = pagesize;
ViewState["CurPage"] = curpage;
ViewState["Lang"] = lang ;
ViewState["PageTotal"] = pagetotal;
}

相关方法及事件#region 相关方法及事件
public void PagerBind()
{
ViewState["PageTotal"]=((int)ViewState["RecTotal"]%(int)ViewState["PageSize"]>0) ? (int)ViewState["RecTotal"]/(int)ViewState["PageSize"]+1 : (int)ViewState["RecTotal"]/(int)ViewState["PageSize"]; //页总数
if ((int)ViewState["Lang"]==0)
{
((Label)Controls[0]).Text="共"+ViewState["RecTotal"].ToString()+"条信息 "+ViewState["PageSize"].ToString()+"条/页 当前"+((int)ViewState["CurPage"]+1).ToString()+"/"+ViewState["PageTotal"].ToString()+"页  ";
}
else
{
((Label)Controls[0]).Text="Total"+ViewState["RecTotal"].ToString()+"Info "+ViewState["PageSize"].ToString()+"/Page Current"+((int)ViewState["CurPage"]+1).ToString()+"/"+ViewState["PageTotal"].ToString()+"Page  ";
((Label)Controls[9]).Text = "To";
((Label)Controls[11]).Text = "Page";
}
((DropDownList)Controls[10]).Items.Clear();

int i=0;
do
{
((DropDownList)Controls[10]).Items.Add(Convert.ToString(i+1));
i++;
}
while (i<(int)ViewState["PageTotal"]);

((DropDownList)Controls[10]).SelectedIndex = ((DropDownList)Controls[10]).Items.IndexOf(((DropDownList)Controls[10]).Items.FindByValue(Convert.ToString((int)ViewState["CurPage"]+1)));