First, describe the web.config file. tag to each error to be processed. -> - (comma-separated user list] "Roles =" [comma-separated role List] "/> ->
->
Ok, I believe that after reading the above introduction, I must know very well for web.config files. Let it be. Below we will cut the subject. In order to prevent the user from accessing the site without verification, our processing method is to click any page when the user does not verify, and the specific code is as follows: But this will generate a problem, That is if I have some information that can be freely accessed by any user, such as the site profile, use instructions, etc. If you don't let users feel troublesome, huh, huh, not anxious, naturally have a corresponding solution in ASP.NET.
The following code can implement anonymous user access Test.aspx page: Solved the above two questions, I believe that everyone must have it. The Login.aspx page is started below. Use C # and SQL Server2000 to create a WebForm page, join the appropriate controls.
The specific code is as follows: <% @ page language = "c #" codebehind = "login.aspx.cs" autoeventwireup = "false" inherits = "secure.login"%>
secure site </ title> <meta content =" Microsoft Visual Studio 7.0 "Name =" Generator "> <meta content =" c # "name =" code_language " > <meta content = "JavaScript" name = "vs_defaultClientScript"> <meta content = "http://schemas.microsoft.com/intellisense/ie5" name = "vs_targetSchema"> </ HEAD> <body MS_POSITIONING = "GridLayout" > <Form id = "login" method = "post" runat = "server"> <table cellspacing = "0" cellpadding = "0" border = "0"> <tr> <td valign = "TOP" align = " LEFT "> <ask: label id =" message "runat =" server "forecolor =" # ff0000 "> </ asp: label> </ td> </ tr> <tr> <td valign =" top "align = "Left"> <b> e-mail: </ b> <td> </ tr> <tr> <td value = "top" align = "left"> <ask: textbox id = "username" runat = "Server" width = "120"> <</p>
<p>/ asp: textbox> </ td> </ tr> <tr> <td valign = "top" align = "left"> <b> password: </ b> </ td> </ tr> <tr> < Td Valign = "TOP" align = "left"> <ask: textbox id = "password" runat = "server" width = "120" textmode = "password"> </ asp: textbox> </ td> </ tr > <Tr> <td valign = "TOP" align = "left"> <ask: checkbox id = "savelogin" runat = "text =" <b> save my login </ b>> </ asp: Checkbox> </ td> </ tr> <tr> <td valign = "TOP" align = "right"> <ask: imagebutton id = "btnlogin" runat = "server" imageurl = "/ images / w2k / login / BTnLogin.gif "> </ ask: imageButton> </ td> </ tr> </ table> </ form> </ body> </ html> The interface is started to write a submission button event, first need to register The event, the code is as follows: private void initializecomponent () {this.btnlogin.click = new system.web.ui.imageClicKeventHandler (this.btnlogin_click); after the event is registered, nature is writing an event handler: Private void btnlogin_click (object sender, system.web.ui.imageclickeventargs e) {ccommondb sql = new ccommondb (); string redirect = ""; if ((redirect =</p>
<p>! Sql.AuthenticateUser (this.Session, this.Response, username.Text, password.Text, saveLogin.Checked)) = string.Empty) {// Redirect the user Response.Redirect (redirect);} else {Message.Text = "Login Failed!";} Readers After reading the code above, I must ask where CCOMMONDB comes from the stuff. This is a class I wrote, used to handle user login information, if success, write related information Enter the session, cookie, and sql databases while jump to the Default.aspx page.</p>
<p>As follows: CCommonDB.cs namespace secure.Components {public class CCommonDB: CSql {public CCommonDB (): base () {} public string AuthenticateUser (System.Web.SessionState.HttpSessionState objSession, // Session Variable System.Web.HttpResponse objResponse , // login string password, // password Bool BPERSIST / / PERSIST login) {Int nloginid = 0; int nlogintype = 0; // log the user in login (email, password, ref nloginid, ref nLoginType); if (nLoginID = 0) // Success {// Log the user in System.Web.Security.FormsAuthentication.SetAuthCookie (nLoginID.ToString (!), bPersist); // Set the session varaibles objSession [ "loginID "] = nLoginID.ToString (); objSession [" loginType "] = nLoginType.ToString (); // Set cookie information incase they made it persistant System.Web.HttpCookie wrapperCookie = new System.Web.HttpCookie (" wrapper ") WrapperCookie.Value = objsession ["wrapper"]. Tostring (); wrappercookie.expire s = DateTime.Now.AddDays (30); System.Web.HttpCookie lgnTypeCookie = new System.Web.HttpCookie ( "loginType");. lgnTypeCookie.Value = objSession [ "loginType"] ToString (); lgnTypeCookie.Expires = DateTime .Now.adddays (30); // add the cookie to the response objresponse.cookies.add (wrappercookie); objresponse.cookies.add (lgntypecookie); return "/candidate/default.aspx";} case 1: // Admin Login {return "/admin/default.aspx";} case 2: // reporting login {return "/reports/default.aspx";} default: {return string.empty;}}} else {Return String.empty }} /// <</p>
<p>Summary> /// verifies the login and password That WERE GIVEN /// </ summary> /// <param name = "email"> The login </ param> /// <param name = "password"> the password </ Param> /// <param name = "nloginid"> Returns the login ID </ param> /// <param name = "nlogintype"> Returns the login type </ param> public void login (String email, string password, ref int nLoginID, ref int nLoginType) {ResetSql (); DataSet ds = new DataSet (); // Set our parameters SqlParameter paramLogin = new SqlParameter ( "@ username", SqlDbType.VarChar, 100); paramLogin.Value = email; SqlParameter paramPassword = new SqlParameter ( "@ password", SqlDbType.VarChar, 20); paramPassword.Value = password; Command.CommandType = CommandType.StoredProcedure; Command.CommandText = "glbl_Login"; command.Parameters.Add (paramLogin) Command.Parameters.Add (parampassword); adapter.tablemappings.add ("table", "login"); adapter.selectcommand = Command; Adapter.Fill (DS); if (ds.tables.count! = 0) { DataRow Ro W = ds.tables [0] .ROWS [0]; // Get the login id and the login type nloginid = convert.toint32 (row ["login_id"]. Tostring ()); nlogintype = convert.toint32 (row [ "login_Type"] ToString ());.} else {nLoginID = 0; nLoginType = 0;}}} abstract public class cSql {private SqlConnection sqlConnection; // Connection string private sqlCommand sqlCommand; // Command private SqlDataAdapter sqlDataAdapter;</p></div><div class="text-center mt-3 text-grey">
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