Today, I saw an E article of Mencius. About the server-side article learned the client browser resolution, the simplification is as follows: <% @ page language = "c #" enableViewState = "false" debug = "TRUE "%>
Detect client display resolution </ title> <meta http-equiv =" Content-type "content =" text / html; charset = GB2312 "> <meta content =" detection client resolution "Name =" description "> <script language =" c # "runat =" server "> void Page_load (Object Sender, System.EventArgs E) {// Place the user code here to initialize the page system.web.ui.webControls.Button Button1 = new system.web.ui.webControls.Button (); if (! ispostback) {system .Web.UI.HtmlControls.HtmlInputHidden btnW = new System.Web.UI.HtmlControls.HtmlInputHidden (); System.Web.UI.HtmlControls.HtmlInputHidden btnH = new System.Web.UI.HtmlControls.HtmlInputHidden (); Button1.ID = "Button1"; btnw.name = "widthpixel"; btnw.id = "widthpixel"; btnh.name = "heightpixel"; btnh.id = "heightpixel"; this.FindControl ("browserpeek). Controls.add (" browserpeek). Controls.add BTNW); this.FindControl ("Browserpeek"). Control s.Add (btnH); this.FindControl ( "browserpeek") Controls.Add (Button1);. string scriptString = ""; scriptString = "document.all.browserpeek.WidthPixel.value = window.screen.width; / r / n "; scriptString =" document.all.browserpeek.HeightPixel.value = window.screen.height; / r / n "; this.RegisterOnSubmitStatement (" Meng ", scriptString); this.MyBody.Attributes.Add ( "OnLoad", "</p>
<p>Document.all. " Button1.ClientID ". Click (); ");} else {this.mybody.attributes.remove (" onLoad "); if (this.FindControl (" browserpeek). Controls.Contains (Button1 )) {this.FindControl ( "browserpeek") Controls.Remove (Button1);. Button1.Dispose ();} System.Text.StringBuilder strLabel = new System.Text.StringBuilder (); HttpBrowserCapabilities bc = Request.Browser; strLabel .Append ("The resolution of your browser is:"); strlabel.Append (Request.form ["widthpixel"]); strlabel.append ("×"); strlabel.Append (Request.form ["Heightpixel" ]); Label1.text = strlabel.tostring ();}} </ script> </ head> <body id = "mybody" runat = "server"> <form id = "browserpeek" runat = "server" name = "browserpeek"> <askSERPEEK> <ask: label id = "label1" runat = "server"> </ asp: label> </ form> </ body> </ html> The principle is: When the client opens the web page, automatically click "Analog Button", returns by the server based on the resolution of the client browser.</p>
<p>Now my purpose is to put this script in global.asax: protected void session_start (Object sender, Eventargs e) {// is here} Let each visitors enter the website, first test a session ["Screenwidthpixel" ] And session ["ScreenHeightpixel"] If there is this value, no longer do the steps to detect the browser and go directly to the automatically adaptable web page. Otherwise, enter the browser resolution detection, then assign the result to session ["ScreenWidThpixel"] and session ["ScreenHeightpixel"].</p>
<p>The problem is coming: 1, if some webpage already contains <form runat = "server" id = "....", the above method is not feasible. Because only one <form runat = "server" ...> is allowed in ASP.NET, if the file is submitted, if there is any other submission, there is also a negative impact. 2, there is also a way to use Server.Transfer or Response.Redirect ("getScreen.aspx"), but will also cause a certain negative impact, such as: Need to return the original page. 3. Consider using IHTTPHANDALE? Welcome everyone to discuss discussions, must be used. Because the current browser category is too much, you need to find a better solution.</p></div><div class="text-center mt-3 text-grey">
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