namespace JYK.Controls
{
/**//// <summary>
/// 分页控件 /// PageGetData.cs 负责提取数据 /// PageSQL.cs 负责生成SQl语句 /// PageUI.cs 负责分页控件的页面内容
/// </summary> [DefaultProperty("Text")] [ToolboxData("<{0}:JYKPage runat=server></{0}:JYKPage>")] public class JYKPage : WebControl, INamingContainer, IPostBackEventHandler { /**//// <summary> /// 访问数据库用的实例 /// </summary> private DataAccessHelp dal = null; /**//// <summary> /// 生成SQL语句的部分 /// </summary> private PageManage.PageSQL MgrPageSQL = null; /**//// <summary> /// 提取数据的部分 /// </summary> private PageManage.PageGetData MgrGetData = null; /**//// <summary> /// 提取数据的部分 /// </summary> private PageManage.PageUI MgrPageUI = null; /**//// <summary> /// 设置显示数据的控件 /// </summary> public System.Web.UI.WebControls.WebControl ControlGrid; 成员#region 成员 页面显示#region 页面显示 /**//// <summary> /// 上一页 的文字 /// </summary> private string pPrevText = "上一页"; //上一页 /**//// <summary> /// 下一页 的文字 /// </summary> private string pNextText = "下一页"; //下一页 /**//// <summary> /// 首页 的文字 /// </summary> private string pFirstText = "首页"; //首页 /**//// <summary> /// 末页 的文字 /// </summary> private string pLastText = "末页"; //末页 /**//// <summary> /// 去指定页号 的文字 /// </summary> private string pGOText = "GO"; //GO #endregion #endregion 属性#region 属性 存放分页算法模版的属性#region 存放分页算法模版的属性 //记录数 记录相关#region 记录相关 一页的记录数#region 一页的记录数 /**//// <summary> /// 一页的记录数 /// </summary> [Bindable(true)] [Category("记录集")] [DefaultValue("")] [Localizable(true)] public Int32 PageSize { set { ViewState["PageSize"] = value; } get { //没有设置的话，使用默认值：一页20条记录 if (ViewState["PageSize"] == null) { return 20; } else { return (Int32)ViewState["PageSize"]; } } } #endregion 符合条件的记录数#region 符合条件的记录数 /**//// <summary> /// 符合条件的记录数 /// </summary> [Bindable(true)] [Category("记录集")] [DefaultValue("")] [Localizable(true)] public Int32 PageRecordCount { set { ViewState["PageRecordCount"] = value; } get { //没有设置的话，返回 0 if (ViewState["PageRecordCount"] == null) { return 0; } else { return (Int32)ViewState["PageRecordCount"]; } } } #endregion 页数#region 页数 /**//// <summary> /// 页数 /// </summary> [Bindable(true)] [Category("记录集")] [DefaultValue("")] [Localizable(true)] public Int32 PageCount { set { ViewState["PageCount"] = value; } get { //没有设置的话，返回 0 if (ViewState["PageCount"] == null) { return 0; } else { return (Int32)ViewState["PageCount"]; } } } #endregion 想要查看哪一页的数据#region 想要查看哪一页的数据 /**//// <summary> /// 想要查看那一页的数据 /// </summary> [Bindable(true)] [Category("记录集")] [DefaultValue("")] [Localizable(true)] public Int32 PageIndex { set { ViewState["PageIndex"] = value; } get { if (ViewState["PageIndex"] == null) { return 1; } else { return (Int32)ViewState["PageIndex"]; } } } #endregion #endregion //SQL语句的基础 分页算法需要的属性#region 分页算法需要的属性 表名、视图名#region 表名、视图名 /**//// <summary> /// 表名、视图名 /// </summary> [Bindable(true)] [Category("SQL语句")] [DefaultValue("")] [Localizable(true)] public string TableName { set { ViewState["TableName"] = value; } get { if (ViewState["TableName"] == null) { if ((base.Site != null) && base.Site.DesignMode) { return "TableName"; } else { CommandClass.MsgBox("没有设置TableName属性！", true); return null; } } else { return ViewState["TableName"].ToString(); } } } #endregion 表的主键#region 表的主键 /**//// <summary> /// 表的主键 /// </summary> [Bindable(true)] [Category("SQL语句")] [DefaultValue("")] [Localizable(true)] public string TableIDColumns { set { ViewState["TableIDColumns"] = value; } get { if (ViewState["TableIDColumns"] == null) { if ((base.Site != null) && base.Site.DesignMode) { return "TableIDColumns"; } else { CommandClass.MsgBox("没有设置TableIDColumns属性！", true); return null; } } else { return ViewState["TableIDColumns"].ToString(); } } } #endregion 显示的字段#region 显示的字段 /**//// <summary> /// 显示的字段 /// </summary> [Bindable(true)] [Category("SQL语句")] [DefaultValue("")] [Localizable(true)] public string TableShowColumns { set { ViewState["TableShowColumns"] = value; } get { if (ViewState["TableShowColumns"] == null) { return "*"; } else { return ViewState["TableShowColumns"].ToString(); } } } #endregion 排序字段#region 排序字段 /**//// <summary> /// 排序字段 /// </summary> [Bindable(true)] [Category("SQL语句")] [DefaultValue("")] [Localizable(true)] public string TableOrderColumns { set { ViewState["TableOrderColumns"] = value; } get { if (ViewState["TableOrderColumns"] == null) { if ((base.Site != null) && base.Site.DesignMode) { return "TableOrderColumns"; } else { CommandClass.MsgBox("没有设置TableOrderColumns属性！", true); return null; } } else { return ViewState["TableOrderColumns"].ToString(); } } } #endregion 查询条件#region 查询条件 /**//// <summary> /// 查询条件 /// </summary> [Bindable(true)] [Category("SQL语句")] [DefaultValue("")] [Localizable(true)] public string TableQuery { set { ViewState["TableQuery"] = value; } get { if (ViewState["TableQuery"] == null) return ""; else return ViewState["TableQuery"].ToString(); } } #endregion #endregion //SQL模版 分页算法模版#region 分页算法模版 /**//// <summary> /// 第一页的分页算法模版 /// </summary> [Bindable(true)] [Category("SQL语句模版")] [DefaultValue("")] [Localizable(true)] public string SQLGetFirstPage { set { ViewState["FirstPageSQL"] = value; } get { return ViewState["FirstPageSQL"] == null ? null : ViewState["FirstPageSQL"].ToString(); } } #endregion 指定页号的分页算法模版#region 指定页号的分页算法模版 /**//// <summary> /// 指定页号的分页算法模版 /// </summary> [Bindable(true)] [Category("SQL语句模版")] [DefaultValue("")] [Localizable(true)] public string SQLGetNextPage { set { ViewState["NextPageSQL"] = value; } get { return ViewState["NextPageSQL"]==null?null:ViewState["NextPageSQL"].ToString(); } } #endregion 指定页号的分页算法模版#region 指定页号的分页算法模版 /**//// <summary> /// 最后一页的分页算法模版 /// </summary> [Bindable(true)] [Category("SQL语句模版")] [DefaultValue("")] [Localizable(true)] public string SQLGetLastPage { set { ViewState["LastPageSQL"] = value; } get { return ViewState["LastPageSQL"] == null ? null : ViewState["LastPageSQL"].ToString(); } } #endregion #endregion //UI 页面显示 上一页、下一页#region 页面显示 上一页、下一页 上一页#region 上一页 /**//// <summary> /// 上一页 /// </summary> [Bindable(true)] [Category("页面显示")] [DefaultValue("")] [Localizable(true)] public string PageUIPrev { get { return pPrevText; } set { pPrevText = value; } } #endregion 下一页#region 下一页 /**//// <summary> /// 下一页 /// </summary> [Bindable(true)] [Category("页面显示")] [DefaultValue("")] [Localizable(true)] public string PageUINext { get { return pNextText; } set { pNextText = value; } } #endregion 首页#region 首页 /**//// <summary> /// 首页 /// </summary> [Bindable(true)] [Category("页面显示")] [DefaultValue("")] [Localizable(true)] public string PageUIFirst { get { return pFirstText; } set { pFirstText = value; } } #endregion 末页#region 末页 /**//// <summary> /// 末页 /// </summary> [Bindable(true)] [Category("页面显示")] [DefaultValue("")] [Localizable(true)] public string PageUILast { get { return pLastText; } set { pLastText = value; } } #endregion GO#region GO /**//// <summary> /// GO /// </summary> [Bindable(true)] [Category("页面显示")] [DefaultValue("")] [Localizable(true)] public string PageUIGO { get { return pGOText; } set { pGOText = value; } } #endregion #endregion 页面导航的数量#region 页面导航的数量 /**//// <summary> /// /// </summary> public Int32 NaviCount { set { ViewState["NaviCount"] = value; } get { if (ViewState["NaviCount"] == null) return 10; else return (Int32)ViewState["NaviCount"]; } } #endregion 页面显示 记录数、页数#region 页面显示 记录数、页数 共{0}条记录数#region 共{0}条记录数 /**//// <summary> /// 共{0}条记录数 /// </summary> [Bindable(true)] [Category("记录信息")] [DefaultValue("")] [Localizable(true)] public string PageUIAllCount { set { ViewState["PageUIAllCount"] = value; } get { if (ViewState["PageUIAllCount"] == null) return "共<font style=\"color:Red;\">{0}</font>条记录数"; else return ViewState["PageUIAllCount"].ToString(); } } #endregion 第{0}/{1}页#region 第{0}/{1}页 /**//// <summary> /// 第{0}/{1}页 /// </summary> [Bindable(true)] [Category("记录信息")] [DefaultValue("")] [Localizable(true)] public string PageUIAllPage { set { ViewState["PageUIAllPage"] = value; } get { if (ViewState["PageUIAllPage"] == null) return "第<font style=\"color:Red;\">{0}</font>/<font style=\"color:Red;\">{1}</font>页"; else return ViewState["PageUIAllPage"].ToString(); } } #endregion 每页{0}条记录#region 每页{0}条记录 /**//// <summary> /// 共{0}条记录数 /// </summary> [Bindable(true)] [Category("记录信息")] [DefaultValue("")] [Localizable(true)] public string PageUIAllPageCount { set { ViewState["PageUIAllPageCount"] = value; } get { if (ViewState["PageUIAllPageCount"] == null) return "每页<font style=\"color:Red;\">{0}</font>条记录"; else return ViewState["PageUIAllPageCount"].ToString(); } } #endregion #endregion 显示数据的控件的ID#region 显示数据的控件的ID /**//// <summary> /// 共{0}条记录数 /// </summary> [Bindable(true)] [Category("显示数据的控件ID")] [DefaultValue("")] [Localizable(true)] public string ControlGridID { set { ViewState["ControlGridID"] = value; } get { if (ViewState["ControlGridID"] == null) return null; else return ViewState["ControlGridID"].ToString(); } } #endregion 数据访问实例的设置#region 数据访问实例的设置 /**//// <summary> /// 设置数据访问层的实例 /// </summary> public DataAccessHelp DAL { set { dal = value; } get { if (dal == null) dal = new DataAccessHelp(); return dal; } } #endregion 管理部分#region 管理部分 /**//// <summary> /// 提取数据的实例 /// </summary> public PageManage.PageGetData ManagerGetData { set { MgrGetData = value; } get { PageManage.PageGetData tmp = MgrGetData; if (tmp == null) { tmp = new JYK.Controls.PageManage.PageGetData(); MgrGetData = tmp; } if (tmp.myPage == null) tmp.myPage = this; return tmp; } } /**//// <summary> /// 提取数据的实例 /// </summary> public PageManage.PageSQL ManagerPageSQL { set { MgrPageSQL = value; } get { PageManage.PageSQL tmp = MgrPageSQL; if (tmp == null) { tmp = new JYK.Controls.PageManage.PageSQL(); MgrPageSQL = tmp; } if (tmp.myPage == null) tmp.myPage = this; return tmp; } } /**//// <summary> /// 提取数据的实例 /// </summary> public PageManage.PageUI ManagerPageUI { set { MgrPageUI = value; } get { PageManage.PageUI tmp = MgrPageUI; if (tmp == null) { tmp = new JYK.Controls.PageManage.PageUI(); MgrPageUI = tmp; } if (tmp.myPage == null) tmp.myPage = this; return tmp; } } #endregion #endregion 函数#region 函数 /**//// <summary> /// 显示第一页的数据 /// </summary> public void BindFirstPage() { //生成SQL语句和获取记录总数 this.ManagerPageSQL.CreateSQL(); //绑定第一页的数据 myDataBind(1); } #endregion 绘制UI CreateChildControls()#region 绘制UI CreateChildControls() /**//// <summary> /// 绘制UI /// </summary> protected override void CreateChildControls() { base.CreateChildControls(); LinkButton btn = new LinkButton(); btn.ID = "Page_Button"; btn.Text = "";//所有的回发事件 //btn.Click += new EventHandler(btn_Click); //添加事件 this.Controls.Add(btn); ManagerPageUI.AddPageUI(); //添加页面显示 Page_Click(); //调用分页事件 } #endregion 响应分页事件#region 响应分页事件 /**//// <summary> /// 响应分页事件 /// </summary> private void Page_Click() { //string a = base.Page.Request.Form["__EVENTTARGET"]; string PageIndex = base.Page.Request.Form["__EVENTARGUMENT"]; if (!Functions.IsInt(PageIndex)) return; else myDataBind(Int32.Parse(PageIndex)); } /**//// <summary> /// 绑定控件 /// </summary> private void myDataBind(Int32 PageIndex) { if (ControlGrid == null) { string CID = this.ControlGridID; if (CID == null) return; else ControlGrid = (WebControl)base.Page.FindControl(CID); } Int32 NoCount = this.NaviCount; //一组页号的数量 bool isNavi = false; Int32 tmpPageIndex = this.PageIndex; switch (PageIndex) { case 1: //首页 isNavi = true; break; case -3: //上一页 PageIndex = this.PageIndex - 1; break; case -2: //下一页 PageIndex = this.PageIndex + 1; if (PageIndex % NoCount == 1) isNavi = true; break; case -99: //前导 if (tmpPageIndex % NoCount == 0) PageIndex = tmpPageIndex - NoCount; else PageIndex = tmpPageIndex / NoCount * NoCount; isNavi = true; break; case -88: //后导 if (tmpPageIndex % NoCount == 0) PageIndex = tmpPageIndex + NoCount; else PageIndex = (this.PageIndex / NoCount + 1) * NoCount + 1; isNavi = true; break; default: isNavi = false ; break; } if (PageIndex == this.PageCount) isNavi = true; //末页 this.PageIndex = PageIndex; //获取记录集 DataTable dt = this.ManagerGetData.GetDataTable(PageIndex); //通过（好像是反射）来设置 DataSource属性。 Microsoft.VisualBasic.CompilerServices.NewLateBinding.LateSet(ControlGrid, null, "datasource", new object[] { dt }, null, null); ControlGrid.DataBind(); //重新显示当前页号 this.ManagerPageUI.UpdatePageIndex(); //重新显示页号当航 if (isNavi) this.ManagerPageUI.ReloadPageNavi(); else this.ManagerPageUI.UpdatePageNavi(); //base.Page.Response.Write(a + "+" + PageIndex); } #endregion /**//// <summary> /// 接收分页控件的回发事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void btn_Click(object sender, EventArgs e) { //throw new NotImplementedException(); //base.Page.Response.Write("ss"); } /**//// <summary> /// 分页的回发事件，没有成功 /// </summary> /// <param name="PageIndex"></param> public void RaisePostBackEvent(string PageIndex) { //base.Page.Response.Write("www"); //Page_Click(); } 设计时支持#region 设计时支持 /**//// <summary> /// 设计时支持 /// </summary> /// <param name="output"></param> protected override void Render(HtmlTextWriter output) { if ((base.Site != null) && base.Site.DesignMode) { output.Write("<div style='TEXT-ALIGN: center;100%'>第1/100页 首页 上一页 [1][2][3] 下一页 末页 共1000条记录</div>"); } else { //Page_Click(); output.Write("<div id='" + this.ClientID + "Page' style='TEXT-ALIGN: center;90%'>"); base.Render(output); output.Write("</div>"); } } #endregion }
}