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Updated : Simple ASP.Net Login Page

Original thread - To see why this was Updated
Reason for new thread is to start with a clean slate and I will also be providing a tutorial for SQL and possibly Oracle DB connections to show how easy this code is to implement regardless of the DB you are using.:p

As well, if time permits I may take the time to code this in a few other .Net languages (C#, C++, and J#).

This is sample code for a ASP.Net Login page (using Visual Basic.Net code behind) with OleDB connection to an Access Database using ADO.Net.



Pre-Code Setup::-|
1. Create a New ASP.NET Web Application. I called mine NorthLogin2
2. Rename the default aspx Webform to Login or Index or something more descriptive. I called mine Login2.aspx
3. Assuming you are in Visual Studio.Net right click on this form in the Solution Explorer and Select Set as Start Page.
4. Find your Northwind.mdb file (The classic Northwind Database in Access)
Under Tools, Options, Tables/Queries Tab select Run Permissions as Owner's
5. Create a new table for login requirements. I called mine tblUser
Columns U_id (autonumber), U_Name (text), and U_Password (text with Input Mask of Password)
6. Create Query (i.e. Stored Procedure) to validate login(s). I called mine sp_ValidateUser
In the SQL Designview the code for that query is

SELECT COUNT(*) AS Num_of_User
         FROM tblUser
         WHERE (((tblUser.U_Name)=[@UserName]) AND ((tblUser.U_Password)=[@Password]));


This query counts the number of users that it retrieves which matches the where clause. The @UserName and @Password are the values passed in to the query from the Webform.
7. Close database, because you can not access it while it is open.Let the coding begin::cheesy:
1. Create the API for your Login Webform. You want to have two textboxes for the user to enter their login information. You will also want to have some kind of visual feedback to the user regarding the status of the login; i.e. Is the login successful? Usually that is done by redirecting to the page they are trying to login to. If it is not successful, and whether they provided the information in the two textboxes.

Login2.aspx

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="Login2.aspx.vb" Inherits="NorthLogin2.WebForm1"%>
        <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
        <html>
        	<head>
        	    <title>Northwind Database Login</title>
        		<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
        		<meta content="Visual Basic .NET 7.1" name="CODE_LANGUAGE">
        		<meta content="JavaScript" name="vs_defaultClientScript">
        		<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
        		<!-- <summary>
        			|||||	Style Sheet |||||
        			</summary>
        	    --><link title="standard" href="Styles.css" type="text/css" rel="stylesheet">
        	</head>
        	<body>
        		<!-- |||||	Login Form	||||| -->
        		<form id="frmlogin" method="post" runat="server">
        		    <table id="mainTable">
        		        <tr>
        		    	    <td>
        		    		    <table class="t_border" id="loginTable" cellspacing="15" cellpadding="0">
        		    		        <tr>
 					 <td><b>Login: </b>
		 		 	 </td>
 					 <td><asp:textbox id="txtUserName" runat="server" width="160px"></asp:textbox><asp:requiredfieldvalidator id="rvUserValidator" runat="server" display="None" errormessage="You must supply a Username!"
		 		 		 controltovalidate="txtUserName"></asp:requiredfieldvalidator></td>
        		    		        </tr>
        		    		        <tr>
 					 <td><b>Password: </b>
		 		 	 </td>
 					 <td><asp:textbox id="txtPassword" runat="server" width="160px" textmode="Password"></asp:textbox><asp:requiredfieldvalidator id="rvPasswordValidator" runat="server" display="None" errormessage="Empty Passwords not accepted"
		 		 		 controltovalidate="txtPassword"></asp:requiredfieldvalidator></td>
        		    		        </tr>
        		    		        <tr>
		 		 		<td align="center" colspan="2"><asp:button id="cmdSubmit" runat="server" borderstyle="Solid" text="Submit"></asp:button></td>
        		    		        </tr>
        		    		    </table>
        		    	    </td>
        		        </tr>
        		        <tr>
        		    	    <td>
        		    		    <table id="messageDisplay">
        		    		        <tr>
 					 <td><asp:validationsummary id="Validationsummary1" runat="server" width="472px" displaymode="BulletList"></asp:validationsummary></td>
        		    		        </tr>
        		    		    </table>
        		    	    </td>
        		        </tr>
        			</table>
        		</form>
        	    <asp:label id="lblMessage" runat="server" width="288px" forecolor="#C00000" font-size="Medium"
        		    font-italic="True" font-bold="True"></asp:label>
        	    <!--	|||||    End of Form	|||||    -->
        	</body>
        </html>


As you can see by the above code I require my users to supply a Username and Password, therequirefieldvalidator object does just that.

2.Code for the communication to the database:
a.Add the following line of code to the Web.Config file
- start right after
<?xml version="1.0" encoding="utf-8"?>
<!-- ||||| Application Settings ||||| -->
<appSettings>
<add key="strConn" value="Provider = Microsoft.Jet.OLEDB.4.0;Data Source=C:\Inetpub\wwwroot\Northwind.mdb;User ID=Admin;Password=;"/>
</appSettings>
<system.web>

These lines of code do several things. 1. Eliminates the need for creation of a connection string (strConn) each time you want to connect to the Database(DB). Who wants to write that out each time. Now you have "pseudo-global" variable for use in your entire application. 2. Makes it secure, so no user can see where the DB is actually located. 3. And most importantly tells the application the location of the said DB.

b.Code the "meat" of the Login in page.
- Mine is in the code behind rather than a script block, but the principles are the same.
- Add the following Imports to your code behind, just above the class declaration.

Imports System.Web.Security '   |||||   Required Class for Authentication
        Imports System.Data '   |||||   DB Accessing Import
        Imports System.Data.OleDb   '   ||||||  Access Database Required Import!
        Imports System.Configuration    '   ||||||  Required for Web.Config appSettings |||||

This will provide the library imports you need for Authentication, accessing an OleDB (i.e. Access), and accessing the web.config file (contains your connection string)c. Create a Function to connect to the DB return result(s)
- This is the main function of this entire webform.

Function DBConnection(ByVal strUserName As String, ByVal strPassword As String) As Boolean
        		[color=#008000]'<sumamry>
        		'   |||||   Declare Required Variables
    		' ||||| Access appSettings of Web.Config for Connection String (Constant)
        		'</summary>
 		' ||||| First is the Connection Object for an Access DB
        		Dim MyConn As OleDbConnection = New OleDbConnection(ConfigurationSettings.AppSettings("strConn"))
        		'   |||||   This is the Connections Object for an SQL DB
        		SqlConnection(ConfigurationSettings.AppSettings("strConn"))
        
        		'<sumamry>
        		'   |||||   Create a OleDb Command Object
        		'   |||||   Pass in Stored procedure
        		'   |||||   Set CommandType to Stored Procedure
        		'</summary>
        
     		' ||||| To Access a Stored Procedure in Access - Requires a Command Object
        		Dim MyCmd As New OleDbCommand("sp_ValidateUser", MyConn)
        		'   |||||   To Access a Stored Procedure in SQL Server - Requires a Command Object
        	   
        		MyCmd.CommandType = CommandType.StoredProcedure
        		'   |||||   Create Parameter Objects for values passed in
        		Dim objParam1, objParam2 As OleDbParameter
        		'<sumamry>
        		'   |||||   Add the parameters to the parameters collection of the
   		' ||||| command object, and set their datatypes (OleDbType in this case)
        		'</summary> 
        		objParam1 = MyCmd.Parameters.Add("@UserName", OleDbType.Char)
        		objParam2 = MyCmd.Parameters.Add("@Password", OleDbType.Char)
        
        		''   |||||   Set the direction of the parameters...input, output, etc
        		objParam1.Direction = ParameterDirection.Input
        		objParam2.Direction = ParameterDirection.Input
        		''   |||||   Set the value(s) of the parameters to the passed in values
        		objParam1.Value = strUserName
        		objParam2.Value = strPassword
        
        		'   |||||   Try, catch block!
        		Try
        		    '   |||||   Check if Connection to DB is already open, if not, then open a connection
        		    If MyConn.State = ConnectionState.Closed Then
        			    '   |||||   DB not already Open...so open it
        				MyConn.Open()
        			End If
        
        		    '   |||||   Create OleDb Data Reader
        		    Dim objReader As OleDbDataReader
        		    objReader = MyCmd.ExecuteReader(CommandBehavior.CloseConnection)
        		    '   |||||   Close the Reader and the Connection Closes with it
        
        			While objReader.Read()
        			    If CStr(objReader.GetValue(0)) <> "1" Then
        				    lblMessage.Text = "Invalid Login!"
        				Else
        				    objReader.Close()   '   |||||   Close the Connections & Reader
        				    Return True
        				End If
        			End While
        		Catch ex As Exception
			lblMessage.Text = "Error Connecting to Database!"
        		End Try
        
        
        	End Function


d. Code the button click event for submitting login to DB
- The code for the onClick event of the Submit button is as follows, but this is very basic and simple. I will be expanding on this further with things like have a maximum number of attempts, and what happens when a user tries to access a page in the application without having logged in; it should redirect the user to the login page/form, otherwise what is the purpose of the login form.

Private Sub cmdSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSubmit.Click
        		If Page.IsValid Then    '   ||||| Meaning the Control Validation was successful!
        		    '   |||||   Connect to Database for User Validation |||||
        	 If DBConnection(txtUserName.Text.Trim(), txtPassword.Text.Trim()) Then
        	 FormsAuthentication.RedirectFromLoginPage(txtUserName.Text, False)  '   |||||   default.aspx Page!
        			Else
        	 Else
					 '   |||||   Credentials are Invalid
					 lblMessage.Text = "Invalid Login!"
					 '   |||||   Increment the LoginCount (attempts)
					 'Session("LoginCount") = CInt(Session("LoginCount")) + 1
					 ' ||||| Determine the Number of Tries
					 'If Session("LoginCount").Equals(intMaxLoginAttempts) Then
					 '	Response.Redirect("Denied.aspx")
					 'End If
        	 
					 'If CInt(Session("Num_of_Tries")) > 2 Then ' ||||| If Exceeds then Deny!
					 '	Response.Redirect("Denied.aspx")
					 'End If
        	 
        				 End If
        			 End If
        	End Sub


3. Create the page to send the user to once login is successful
- In Visual Studio.Net go to File -> Add New Item -> Webform
- Name it default.aspx
- For ease at this time, just put a text message saying something like "Successful Login".
- It is this page that ASP.Net will automatically look for once login is successful, so if you do not create it you will get an application error.

4. Compile and run your code!

That is the end of this basic outline of a Login Page using ASP.Net. There were some moderate level of difficulty coding, but I believe my comments inline with the code should clarify any questions you may have. If by chance you have some questions, please post them here.

Please DO NOT POST replies to this thread that say things like - "Mine doesn't work!" without providing details of what errors you got, what does happen, etc.

I can't help you if you do not provide details! Let me say that again I can't help you if you do not provide details! And preferably any code alerations you may have done to the above code for your specific
application.

Happy Coding.:cool:

Paladine
Master Poster
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824 posts since Feb 2003
Reputation Points: 211
Solved Threads: 27
 

SQL Variation on the above Simple Login Page in ASP.Net (w/ VB.Net)
** I am using Visual Studio.Net and SQL Server 2000, but the principles are still the same regardless of your IDE tools ***

1. Follow the above steps for creation of the Application and Page
a. Created a WebForm called the ASP.Net Page Login.aspx
b. Coded the WebForm in HTML

2. Modify the Web.Config file and add the connection string to SQL Server(as was above..BUT DIFFERENT!)

- This assumes your SQL Server is located locally on your system, and not remotely.
- Add these lines of code the Web.Config file just after .

Web.Config:

<!--    |||||	Application Settings    |||||	-->
           <appSettings>
         	<add key="strConn" value="Data Source=(local);database=Northwind;User id=Paladine;Password=;"/>
           </appSettings>
           <system.web>


- If the server is located remotely, then there is a slight modification to the connection string to be made Remote Connection:

<appSettings>
         	<add key="strConn" value="Network Library=DBMSSOCN;Data Source=192.168.0.100,1433;database=Northwind;User id=Paladine;Password=;"/>
           </appSettings>


- Data Source is the IP Address of the Server hosting the SQL Server DB
- 1433 is the standard port for SQL Server 3. Declare the Imports required

- These give you access to the libraries and data access methods you need to connect the Login Page to the data base.

Imports:

Imports System.Web.Security	 '   ||||||   Required Class for Authentication
         Imports System.Data			 '   ||||||   DB Accessing Import
         Imports System.Data.SqlClient   '   ||||||   SQL Server Import
         Imports System.Configuration    '   ||||||   Required for Web.Config appSettings |||||


4. As was done in the above example for access, create the OnClick Event code for the Submit Button

- I am using the codebind, rather than the script method of coding the Visual Basic Portion of the Application.
- Once this button is pressed, the ASP.Net Page will validate the data provided by the user before it transmits anything to the server.
- If the date meets the validation criteria, then the event will call the DBConnection Function.
- But before we get to the DBConnection Function, here is the code for the OnClick Event

OnClick_Event:

Private Sub cmdSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSubmit.Click
         		If Page.IsValid Then    '   ||||| Meaning the Control Validation was successful!
         		    '   |||||   Connect to Database for User Validation |||||
         		    If DBConnection(txtUserName.Text.Trim(), txtPassword.Text.Trim()) Then
         			    FormsAuthentication.RedirectFromLoginPage(txtUserName.Text, False)  '   |||||   default.aspx Page!
         			Else
         			    '   |||||   Credentials are Invalid
         			    lblMessage.Text = "Invalid Login!"
         			End If
         		End If
         	End Sub


5. Create the table that stores the User Login Credentials

- This can be easily done in Visual Studio.NET or vial query analyzer.
- Use which ever method you want, I will show the code as you would enter it in query analyzer

Table Script:

CREATE TABLE NorthWindUsers 
         	(UserID INT IDENTITY(1,1) NOT NULL,
         	 UserName VARCHAR(50) NOT NULL,
         	 Password VARCHAR(50) NOT NULL)


6. Insert some data into the newly created table.
- This is just for teaching purposes, but you could wrap this code up into a Store Procedure and use it in a Add New User page in your application.

Insert Script:

INSERT INTO NorthWindUsers
         	(UserName, Password)
         	VALUES ('Admin', 'Admin')


7. As in the AccessDB example you must create the stored procedure which takes the values pass to it and validates them against the database.

- The values being passed to the store procedure are the User Name and Password.
- The store procedure can be created by two methods with my setup :

a. In Visual Studio
- Create a server connection to your SQL Server in the Server Explorer.
- Once you have this connection select the Northwind Database
- In the Visual Studio.Net IDE select the Database Menu->New Stored Procedure
- Follow the code sample below to create the stored procedure. **DO NOT Forget to Rename the default stored procedure name i.e.StoreProcedure1**

b. In Query Analyzer
- Create the stored procedure as by following the sample code below

Things to note:

/* <strong>JUST TO SHOW YOU A DIFFERENCE BETWEEN</strong> Visual Studio.Net and Query Analyzer */
         CREATE PROCEDURE dbo.sp_ValidateUser /* How it would appear in Visual Studio.Net */
         CREATE PROCEDURE sp_ValidateUser /* How it would appear in QUERY ANALYZER */


The Store Procedure Script:

CREATE PROCEDURE sp_ValidateUser /* How it would appear in QUERY ANALYZER */
         	(
         		@UserName VARCHAR(50) = NULL,
         		@Password VARCHAR(50) = NULL,
         		@Num_of_User INT = 0
         	)
         AS
         	SET @Num_of_User = (SELECT COUNT(*) AS Num_of_User
         	FROM NorthWindUsers
         	WHERE UserName = @UserName AND Password = @Password)
         RETURN  @Num_of_User


8. As in the AccessDB Example of this login page you need to create the DBConnection Function
- You will have to modify the code from the AccessDB example to work for SQL server.
- You will declare a new parameter, add it to the parameter colleciton, and have it set to receive the return value from the stored procedure.
- Determine if the return value is greater than 0 (meaning the SQL DB found the user based on the creditenials provided).

DBConnection Function:

Function DBConnection(ByVal strUserName As String, ByVal strPassword As String) As Boolean
         		'<sumamry>
         		'   |||||   Declare Required Variables
     		' ||||| Access appSettings of Web.Config for Connection String (Constant)
         		'</summary>
         		'   |||||   This is the Connections Object for an SQL DB
         		Dim MyConn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("strConn"))
         
         		'<sumamry>
         		'   |||||   Create a OleDb Command Object
         		'   |||||   Pass in Stored procedure
         		'   |||||   Set CommandType to Stored Procedure
         		'</summary>
         
  		' ||||| To Access a Stored Procedure in SQL Server - Requires a Command Object
         		Dim MyCmd As New SqlCommand("sp_ValidateUser", MyConn)
         
         		MyCmd.CommandType = CommandType.StoredProcedure
         		'   |||||   Create Parameter Objects for values passed in
         		Dim objParam1, objParam2 As SqlParameter
         		'   |||||   Create a parameter to store your Return Value from the Stored Procedure
         		Dim objReturnParam As SqlParameter
         		'<sumamry>
         		'   |||||   Add the parameters to the parameters collection of the
    		' ||||| command object, and set their datatypes (OleDbType in this case)
         		'</summary> 
         		objParam1 = MyCmd.Parameters.Add("@UserName", SqlDbType.VarChar)
         		objParam2 = MyCmd.Parameters.Add("@Password", SqlDbType.VarChar)
         		objReturnParam = MyCmd.Parameters.Add("@Num_of_User", SqlDbType.Int)
         
         		'   |||||   Set the direction of the parameters...input, output, etc
         		objParam1.Direction = ParameterDirection.Input
         		objParam2.Direction = ParameterDirection.Input
         		objReturnParam.Direction = ParameterDirection.ReturnValue   '   Note RETURNVALUE
		'' ||||| Set the value(s) of the parameters to the respective source controls
         		objParam1.Value = txtUserName.Text
         		objParam2.Value = txtPassword.Text
         
         		'   |||||   Try, catch block!
         		Try
         		    '   |||||   Check if Connection to DB is already open, if not, then open a connection
         		    If MyConn.State = ConnectionState.Closed Then
         			    '   |||||   DB not already Open...so open it
         				MyConn.Open()
         				MyCmd.ExecuteNonQuery()
         			End If
         		    '   |||||   Was the return value greater than 0 ???
         		    If objReturnParam.Value < 1 Then
         			    lblMessage.Text = "Invalid Login!"
         			Else
         				Return True
         			End If
         
         		    '   |||||   Close the Connection Closes with it
         			MyConn.Close()
         
         
         		Catch ex As Exception
  			lblMessage2.Text = "Error Connecting to Database!"
         		End Try
         
         
         	End Function


9. Create the default.aspx page (as in the above AccessDB example)
- This is the default page the application will go to following a successful login.



Your SIMPLE (kind of) SQL Login Page is COMPLETE! Compile and Run it, and if you followed my steps it will work!

Hope this helps everyone, and happy coding.:cool:

Disclaimer:
There is an even simplier version of this login page, down to the bare minimum of code. But I went the route I did for reasons of expanding, and eventually a tutorial on making this login code into a User Control that you can implement in a number of applications. Thus not having to recode this everytime you do a new application requiring a login.

Paladine
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824 posts since Feb 2003
Reputation Points: 211
Solved Threads: 27
 

Thanks a bunch Paladine. Almost there.

I ran the login page in debug mode and found this:
After MyCmd.ExecuteNonQuery(), it took me to the Catch ex As Exception

I double checked the strConn & Stored Procedure and they both work. Did it work on your DB?

-kendel

Kendel
Newbie Poster
12 posts since Feb 2005
Reputation Points: 10
Solved Threads: 1
 

It's my bad. I didn't know that the params in the SP must match the params in .net page

Your example works perfect. Thanks again.

Thanks a bunch Paladine. Almost there.

I ran the login page in debug mode and found this: After MyCmd.ExecuteNonQuery(), it took me to the Catch ex As Exception

I double checked the strConn & Stored Procedure and they both work. Did it work on your DB?

-kendel

Kendel
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12 posts since Feb 2005
Reputation Points: 10
Solved Threads: 1
 

hi Paladine,
i just tried ur code with this change in the webconfig:

I get this error:

An analytical error message: Composition section appSettings cannot be
recognized.
Source error:
Line 12:
Line 13:
Line 14:
Line 15:
Line 16:

I have a database called users and have a table called tbl_users in users database.

Im stuck using a Jap version of SQL server and visual studio.net, i havent used sql server b4, and dont know how if i saved the query correctly. could you give more details, sorri 2 b such a bother.
Cheers for any help!

kantong
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5 posts since Mar 2005
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Solved Threads: 0
 

hi hi!
i didnt see the 2nd posting u did and i changed my web.config to:

And i get this error:
An analytical error message: Type 'Final2.Global' was not able to be read.
Source error:
Line 1:<%@ Application Codebehind="Global.asax.vb" Inherits="Final2.Global" %>
im like huh? wats global.asax file do?

kantong
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5 posts since Mar 2005
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I started from scratch and its working now! ur a chamP!
cheers

kantong
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Hmm.. Glad I could.... help! Hehe.

Happy Coding

Paladine
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824 posts since Feb 2003
Reputation Points: 211
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Hi Paladine,
i just wanted to know, how can i insert more fields into the exisiting table on sql server?

kantong
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5 posts since Mar 2005
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In short. With difficulty. It depends, is there data (more than a few lines that ) in the table? When you modifiy an existing table with data in it, there can be issues with data integrity, as well as how is the new field going to affect the existing rows.

In the case of a few lines data, you can extract that data with Enterprise manager, and then Drop the table, recreate it with the new fields, and then modify the insert statements you exported with Enterprise manager to include data for the new fields...and voila. But it is a little more intensive than I made it sound. Unless you have the original insert statments that first populated the table. Like my example above.

Paladine
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thnks a bunch 4 all ur good work paladine!!

it really works!

but since im a novice in asp.net, ive few question 4 u..

in ur application, evry succesfull login will be directed to default.aspx page..is there another way to direct to other page? the simple way is by renaming the file, but sure there is other way rite??

2ndly, i just wanted to clarify, by having form authorization, user cannot have access to any page in the web application rite?? but, unfortunately, it can happen in my application..i can still go directly to any page i desired by typing the path in the browser..whut is wrong?do i need to include some portion of code in every page in the application to indicate user must first log on?? im really newbie in asp.net..hope u cud help thnks!

ninimka
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2 posts since Mar 2005
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Thanks for the compliments!


To answer you second question first, I will say yes. Here is a synopsis of what you would have to do.

FormsAuthentication.RedirectFromLoginPage(username,createPersistentCookie)

when you pass FormsAuthentication.RedirectFromLoginPage a second parameter that equals false, like this: FormsAuthentication.RedirectFromLoginPage (UserName.Text, false)

RedirectFromLoginPage issues a temporary cookie, or session cookie, that expires when the browser is closed. If you pass true instead, RedirectFromLoginPage issues a persistent cookie thats good for 50 years.

You will want to modify this cookie, and you can check the cookie at the beginning of each page within the application and if it does not match you redirect to the login page. Hope that makes sense?

As for your second question, this is a setting under IIS, so simply go to the IIS managment console and modify the default page to whatever you like.

Hope this helps!

Take carethnks a bunch 4 all ur good work paladine!!

it really works!

but since im a novice in asp.net, ive few question 4 u..

in ur application, evry succesfull login will be directed to default.aspx page..is there another way to direct to other page? the simple way is by renaming the file, but sure there is other way rite??

2ndly, i just wanted to clarify, by having form authorization, user cannot have access to any page in the web application rite?? but, unfortunately, it can happen in my application..i can still go directly to any page i desired by typing the path in the browser..whut is wrong?do i need to include some portion of code in every page in the application to indicate user must first log on?? im really newbie in asp.net..hope u cud help thnks!

Paladine
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Team Colleague
824 posts since Feb 2003
Reputation Points: 211
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Thanks to Paladine - This is exactly what I am looking for and trying to do. I have a question - when I try to create procedure...it gives me an error - Server: Msg 170, Level 15, State 1, Procedure sp_ValidateUser, Line 8
Line 8: Incorrect syntax near 'Num_of_User'.
What does it mean? How to fix it. Thanks for a million.

vbmntv
Newbie Poster
5 posts since Mar 2005
Reputation Points: 10
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Hi there,

Thanks to Paladine, I've learned a lot from his .NET login example as well.

About the error, it's just a careless typo. To fix it, replace (.) with a commas(,) after NULL in the sencond line.

@UserName VARCHAR(50) = NULL,
@Password VARCHAR(50) = NULL,
@Num_of_User INT = 0

Thanks to Paladine - This is exactly what I am looking for and trying to do. I have a question - when I try to create procedure...it gives me an error - Server: Msg 170, Level 15, State 1, Procedure sp_ValidateUser, Line 8 Line 8: Incorrect syntax near 'Num_of_User'. What does it mean? How to fix it. Thanks for a million.
Kendel
Newbie Poster
12 posts since Feb 2005
Reputation Points: 10
Solved Threads: 1
 
You will want to modify this cookie, and you can check the cookie at the beginning of each page within the application and if it does not match you redirect to the login page. Hope that makes sense?

im so sorry 4 my low knowldge on this area, but cud u be more specific on this?? perhaps portion of coding to implement this?? thnks

ninimka
Newbie Poster
2 posts since Mar 2005
Reputation Points: 10
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hi hi! thanks for the reply Paladine about the table issue. The next thing i want to do is compare a username to a username in the database.
From this line: FormsAuthentication.RedirectFromLoginPage(txtUserName.Text, False)
If i set to say: RedirectFromLoginPage(txtUserName.Text, True)
what does that do? and how can I compare this username in another page?
What I am trying to do is:
if the username = then
load an empty form
else if username = Then
Load form with member's details already there

im trying to create an update details page.
no idea how to access username thats being passed from the RedirectFromLoginPage...
cheers

Kevin

kantong
Newbie Poster
5 posts since Mar 2005
Reputation Points: 10
Solved Threads: 0
 

Kendel, I saw that and I did change it with a commas(,) ...and got that error:
Server: Msg 170, Level 15, State 1, Procedure sp_ValidateUser, Line 8
Line 8: Incorrect syntax near 'Num_of_User'.

which is at this line: SET @ Num_of_User = (SELECT COUNT(*) AS Num_of_User

any ideas? Thanks

vbmntv
Newbie Poster
5 posts since Mar 2005
Reputation Points: 10
Solved Threads: 0
 

Ok, I will have to once again make this clear. *COPY & PASTE* only works well if you also understand the code. When I copy and paste the code I convert it with a vbColorCoder to have it look nice here. So sometimes extra spaces get added.

So in this case SET @ Num_of_User .... has a space between the @ and Num which it shouldn't, so please remove that and it should work.

So as I stated before, understanding the code and syntax is important!

:cool:
Hope this helps!


Kendel, I saw that and I did change it with a commas(,) ...and got that error:
Server: Msg 170, Level 15, State 1, Procedure sp_ValidateUser, Line 8
Line 8: Incorrect syntax near 'Num_of_User'.

which is at this line: SET @ Num_of_User = (SELECT COUNT(*) AS Num_of_User

any ideas? Thanks

Paladine
Master Poster
Team Colleague
824 posts since Feb 2003
Reputation Points: 211
Solved Threads: 27
 

Thanks Paladine. I saw the extra space and fixed it. Thanks for the advice.

vbmntv
Newbie Poster
5 posts since Mar 2005
Reputation Points: 10
Solved Threads: 0
 

No worries,

You can do something like this
Creating a Cookie with a custom Expiry Date
Alternatively you can create a cookie that's issued and has a custom lifetime instead of 50 years. The key is to replace the call to RedirectFromLoginPage method with the your own implementation, like so:

Dim cookie As HttpCookie = FormsAuthentication.GetAuthCookie (UserName.Text, chkPersistCookie.Checked)
 ' Expires in 30 days, 12 hours and 30 minutes from today.
 cookie.Expires = DateTime.Now.Add(New TimeSpan(30, 12, 30, 0))
 Response.Cookies.Add (cookie)
 Response.Redirect (FormsAuthentication.GetRedirectUrl (UserName.Text,chkPersistCookie.Checked))
Here we have created a new authentication cookie, explicitly set its expiration date, added the cookie to the Cookies collection of the current HttpResponse instance, and finally we redirect the user to the page that they had requested.

Hope this helpsim so sorry 4 my low knowldge on this area, but cud u be more specific on this?? perhaps portion of coding to implement this?? thnks

Paladine
Master Poster
Team Colleague
824 posts since Feb 2003
Reputation Points: 211
Solved Threads: 27
 

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