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第一次写,忘记注解,对不住. using System; using System.Web.UI; using System.Web.UI.WebControls; using System.ComponentModel; using System.Data; using System.Xml; namespace Grid { public class IDArgs : System.EventArgs { private string id; //Constructor. // public IDArgs(string Id) { this.id =Id; } // The NumRings property returns the number of rings // that the alarm clock has sounded when the alarm event // is generated. // public string ID { get { return this.id ;} } } /// /// Summary description for WebCustomControl1. /// [DefaultProperty("Text"), ToolboxData("<{0}:WebCustomControl1 runat=server>")] public class WebCustomControl1 : System.Web.UI.WebControls.WebControl, IPostBackEventHandler { public string EditUrl { get { if(this.ViewState["EditUrl"]!=null) return (string)this.ViewState["EditUrl"]; else return ""; } set { this.ViewState["EditUrl"]=value; } } public string ExpandColumn { get { if(this.ViewState["ExpandColumn"]!=null) return (string)this.ViewState["ExpandColumn"]; else return ""; } set { this.ViewState["ExpandColumn"]=value; } } //set paging public int IsPaging { get { if(this.ViewState["IsPaging"]!=null) return (int)this.ViewState["IsPaging"]; else return 0; } set { this.ViewState["IsPaging"]=value; } } public int PageCount { get { if(this.ViewState["PageCount"]!=null) return (int)this.ViewState["PageCount"]; else return 0; } set { this.ViewState["PageCount"]=value; } } public int CurrentPage { get { if(this.ViewState["CurrentPage"]!=null) return (int)this.ViewState["CurrentPage"]; else return 1; } set { this.ViewState["CurrentPage"]=value; } } //set sort public int IsSort { get { if(this.ViewState["IsSort"]!=null) return (int)this.ViewState["IsSort"]; else return 0; } set { this.ViewState["IsSort"]=value; } } public int sortColumn { get { if(this.ViewState["sortColumn"]!=null) return (int)this.ViewState["sortColumn"]; else return -1; } set { this.ViewState["sortColumn"]=value; } } public string sortColumnName { get { if(this.ViewState["sortColumnName"]!=null) return (string)this.ViewState["sortColumnName"]; else return ""; } set { this.ViewState["sortColumnName"]=value; } } public string sortOrder { get { if(this.ViewState["sortOrder"]!=null) return (string)this.ViewState["sortOrder"]; else return "ASC"; } set { this.ViewState["sortOrder"]=value; } } public DataSet source { get { return (DataSet)this.ViewState["source"]; } set { this.ViewState["source"]=value; } } public event EventHandler Delete; public event EventHandler Refresh; public void RaisePostDataChangedEvent() { // IPostBackDataHandler 协定的一部分。假如曾经从 LoadPostData 方式返回真 // （表示需要引发更改通知），则被调用。由于 // 始终返回假，则此方式只是一个空操作。 } // protected void OnChange(EventArgs e) // { // Sort(this, e); // } public void RaisePostBackEvent(String eventArgument) { if (eventArgument.IndexOf("|")>-1) { IDArgs ide=new IDArgs(eventArgument.Substring(eventArgument.IndexOf("|")+1)); if (Delete!=null) { Delete(this,ide); } return; } string flag=""; switch(eventArgument) { case "first":this.CurrentPage =1;break; case "prev":this.CurrentPage -- ;break; case "next":this.CurrentPage ++ ;break; case "last":this.CurrentPage =this.PageCount;break; case "":break; default: { DataTable dt=source.Tables[0]; int lastColumn=sortColumn; for(int i=0;i if (eventArgument==dt.Columns[i].ColumnName) { sortColumn=i; break; } if (lastColumn==sortColumn) { if (this.sortOrder=="DESC") sortOrder="ASC"; else sortOrder="DESC";} else sortOrder="ASC"; sortColumnName=eventArgument; break; } } // if ( flag=="sort") // { // if(this.IsSort ==0) // { // return; // } // } if ( Refresh!=null) Refresh(this,EventArgs.Empty ); } private string WriteScipt() { string script=@" "; string style=@" "; return script+style; } private string writeList() { int[] columnWidth=new int[] {20,100,100,100,0}; DataTable dt=source.Tables[0]; string title=(this.IsSort ==0)?"title":"SortTitle"; string list=" "; if (ExpandColumn!="") list+=""; if (this.IsSort==1) { string sortstr=""; string sortFlag=(this.sortOrder=="ASC")?"5":"6"; //set header and sort for(int j=1;j { if (sortColumn==j) { sortstr=""+sortFlag+""; } else sortstr=""; if (columnWidth[j]==0) list+=""+dt.Columns[j].ColumnName+sortstr+""; else list+=""+dt.Columns[j].ColumnName+sortstr+""; } } else { for(int j=1;j { if (columnWidth[j]==0) list+=""+dt.Columns[j].ColumnName+""; else list+=""+dt.Columns[j].ColumnName+""; } } list+="L "; list+=""; list+=""; for(int i=0;i { list+=""; //expand column if (ExpandColumn!="") list+="5 "; //delete column list+="r"; //edit column list+="1"; for(int j=1;j { list+=""+dt.Rows[i][j].ToString()+""; } list+=" "; //expand display if (ExpandColumn!="") list+=" desc -------------------------------------------------------------------------------- "+dt.Rows[i][ExpandColumn].ToString()+" "; } list +=" "; if (this.IsPaging ==0)return list; //set pageing string paging=""; if ( PageCount<2) paging="9|3|4|:"; else { if (this.CurrentPage==1) paging="9|3|4|:"; else if (this.CurrentPage ==this.PageCount) paging="9|3|4|:"; else paging="9|3|4|:"; } list +="Total:"+this.PageCount+"Page:"+this.CurrentPage+""+paging; return list; } /// /// Render this control to the output parameter specified. /// /// The HTML writer to write out to protected override void Render(HtmlTextWriter output) { output.Write(WriteScipt()); output.Write(writeList()); } } } 返回类别: 教程 上一教程: ASP技术在论坛中的运用(四) 下一教程: 用ASP设计购物推车 您可以阅读与"一个自定义的可以分页,排序,扩展显示GRID控件"相关的教程: · 一个显示GRID的VBSCRIPT对象 · 一个超强通用的分页显示函数 · 一个通用数据库显示程序,能调任意库,任意字段,多要害字搜索,自动分页 · 让自定义文件下载支持断点续传(HTTP_RANGE ADODB.STREAM) · 分页的显示-->前后翻滚10页的实现 |
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