A simple Web-page counter

Today wrote a simple counter, the function is simple, can record the total number of visits and the number of visits today. The code is as follows:
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// ******************************************************** //Web Counter control//Designed by Faib Studio.//Copyright//Email faib920@126.com or QQ 55570729// ******************************************************** 
usingSystem;usingSystem.ComponentModel;usingSystem.Web.UI;usingSystem.Web.UI.Design;usingSystem.Web.UI.WebControls;usingSystem.Drawing.Design;usingSystem.IO;usingSystem.Text;namespacefaibclass.webcontrols {[ToolBoxData ("<{0}:counter runat=server></{0}:counter>")] Public classCounter:label {#region Private Variables        Private stringM_filename ="";Private stringM_imageurl ="";Private intM_length = 5;Private intM_totalcount, M_todaycount;Private BOOLM_onlyicon =false;#endregion
         PublicCounter () {}#region Properties[Browsable (false)] Public Override stringText {Get{return Base. Text; }Set{Base. Text = value; }} [Category ("Appearance"), Description (the path to the text file where the count is saved. "), Editor (typeof(UrlEditor),typeof(UITypeEditor))] Public stringFileName {Get{returnM_filename; }Set{m_filename = value;} } [Category ("Appearance"), Description ("Use images to display counts, numbers using wildcard characters instead." "), Editor (typeof(Imageurleditor),typeof(UITypeEditor))] Public stringIMAGEURL {Get{returnM_imageurl; }Set{m_imageurl = value;} } [Category ("Appearance"), Description ("Displays the default length of the count. "), DefaultValue (5)] Public intLength {Get{returnM_length; }Set{m_length = value;} } [Category ("Appearance"), Description ("Whether an icon is displayed only on the interface. "), DefaultValue (false)] Public BOOLOnlyicon {Get{returnM_onlyicon; }Set{M_onlyicon = value;} }//Total traffic[Browsable (false)] Public intTotalCount {Get{returnM_totalcount; }Set{m_totalcount = value;} }//Today visits[Browsable (false)] Public intTodaycount {Get{returnM_todaycount; }Set{m_todaycount = value;} }#endregion#region Public Methods        protected Override voidOnLoad (EventArgs e) {intCounter = 0, Todaycounter = 0;
            DateTime today = Datetime.minvalue; StringBuilder Builder =NewStringBuilder ();if(Util.isdesignmode (Page))//Whether design mode{Random rad =NewRandom ();if(M_imageurl.length = = 0) {if(M_onlyicon) {Builder. Append ("  " "+ M_imageurl +"/" align=absmiddle> "); }Else{ for(inti = 0; i < m_length; i++) {Builder. Append (RAD. Next (9).
                        ToString ()); }
                    }
                }Else{if(M_onlyicon) {Builder. Append ("  " "+ M_imageurl +"/" align=absmiddle> "); }Else{ for(inti = 0; i < m_length; i++) {Builder. Append ("  " "+ M_imageurl.replace ("?"Rad. Next (9). ToString ()) +"/" align=absmiddle> "); } } } }Else{BOOLBlnexists = File.exists (Page.Server.MapPath (m_filename));if(blnexists)//read out the number of visits{StreamReader str = file.opentext (Page.Server.MapPath (m_filename));Try{counter =int. Parse (str. ReadLine ()); Todaycounter =int. Parse (str. ReadLine ()); Today = DateTime.Parse (str. ReadLine ()); }Catch{Throw NewException ("The file content is empty, please delete the file"); }finally{str. Close (); } }if(page.session["__counter"] ==NULL) {counter++; todaycounter++;if(Today! = Datetime.today) {today = Datetime.today; } }strings = counter. ToString (); Attributes.Add ("title","Total:"+ S +", Today:"+ Todaycounter. ToString ());if(M_onlyicon) {Builder. Append ("  " "+ M_imageurl +"/" align=absmiddle> "); }Else{if(S.length < M_length) {if(M_imageurl.length = = 0) { for(inti = 0; i < m_length-s.length; i++) {Builder. Append ("0"); } }Else{ for(inti = 0; i < m_length-s.length; i++) {Builder. Append ("  " "+ M_imageurl.replace ("?","0") +"/" align=absmiddle> "); } } }if(M_imageurl.length = = 0) {Builder. Append (s); }Else{ for(inti = 0; i < s.length; i++) {Builder. Append ("  " "+ M_imageurl.replace ("?", S.substring (i, 1)) +"/" align=absmiddle> "); } } }//write new traffic to the file if(page.session["__counter"] ==NULL) {StreamWriter STW =NewStreamWriter (Page.Server.MapPath (m_filename)); StW. WriteLine (counter. ToString ());//write totalsStW. WriteLine (Todaycounter. ToString ());//write DateStW. WriteLine (today. ToShortDateString ());//write today TrafficStW. Close (); page.session["__counter"] = 1;//Logo}} Text = Builder. ToString (); M_totalcount = counter; M_todaycount = Todaycounter;Base. OnLoad (e); }#endregion} }