IDE :: Validating A Login Password?
Nov 5, 2007
why the following Sub does not work as expected. It has no compile errors but it does not work. It suppose to validate a password entered by a user on a login form with users password in a table called 'passwd' in the LgaPayroll database. If the password entered matches what is in the password field of the 'passwd' table then it will display a form else, it will tell the user 'The password you enter was invalid". My problem is; even when you entered a password that is in the 'passwd' table, it is tells you 'The password you enter was invalid'. Below is the Sub:
Private Sub btnOK_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnOK.Click
' Set the SelectCommand properties...
objDataAdapter.SelectCommand = New SqlCommand()
[Code].....
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Jan 14, 2012
My intent is to have the code - on a button.click event - check the Username and Password fields and return an error depending on which is wrong. Or if both are wrong, return a different error message. I've set the username as parts and the password as parts (still learning how to use external authentication). [Code]
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May 29, 2009
how can i login when user type password and they press enter that login code can be activiate. What event can be using for this, i m using button_click event. need textbox typed value and press enter it should be login to that next form.
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Jul 31, 2010
I try to make one application that will first show login form (with textbox for username and password) and when I press login client application send request to server side application that make SQL query (local) and return some values and that values will be listed in main form. I try something with TCP chat source codes but I don't manage what I want.
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Apr 11, 2009
How do I create a Login Verification routine (Login Form) and make the password case sensitive?Please remember to mark the replies as answers if they help and unmark them if they provide no help.
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Apr 20, 2012
basically i want to create a login to my program which uses the same username and password as windows login.I already know how to retrieve username and auto place it in the username box using
TextBox1.Text = Environment.UserName.ToString
i wondered is there an easy way to only allow access if the password matches up to their logon? i dont know about setting up databases but i dont think this option would work because each member of staff can personally choose their password.
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Jan 28, 2012
I'm trying to check username and password by using a For Each Statement. If it validates then messagebox saying welcome appears, if it doesn't a message box saying "incorrect" will keep popping up over and over until it's done looping through the table. How can i correct this and just make it display one time. Also when it does validate a new window will show up with users First and Last name in a textbox, How can I edit users info and then save to db.
Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
Dim data As New datalinq1DataContext
[Code]....
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Aug 29, 2011
I have a stored procedure in sql 2005 and I want to use it to validate user login in vb 2005 when users lgin with their username and password
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Nov 5, 2010
i am trying to do a for loop to give the user 3 trys to get the login username and password right. the username is User and the Password is VB. the code i got so far is a if function Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
[Code]...
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Dec 14, 2009
In login control ,is user can login with their encrypted password?
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Nov 18, 2009
Is about login and record username and password.When i tried to debug the below code, error msg read "file not found". Basically, i am trying to create a test.mdb file into the windowslogin directory if there is none. Then user could either key in their old/new username or password where the data would be read / retrieve from the test.mdb. Somehow, there is error. [code]
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Aug 10, 2009
I've setup a login form on an app I am building and I am using that to pull back user details from SQL @USername, then comparing the password on SQL to the one typed into the login form. The username and password get pulled back from SQL and fill two text boxes which are hidden from the user under a logo image (I haven't actually set them to visible = false cause I've had that cause errors itself with other things before)
Code on the Ok button on the login form:
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
Dim UserLogin = Trim(UsernameTB.Text)
Dim UserPass = Trim(PasswordTB.Text)
If String.IsNullOrEmpty(UsernameTB.Text) Then
[Code] .....
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Nov 12, 2010
create a vb 2008 code that requires a user to log in. His username and password are stored in an ms access table. Everytime he logs in, that table is searched for the corresponding username and password; if successful, form1 is opened; if not, the program displays a username and password mismatch error message and allows the user up to 3 attempts before it closes the program.
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Sep 6, 2010
How to get WebBrowser1 login and password and login button?
function login() {
f = document.loginform
if ( f.account.value == '' ) {
[code].....
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Aug 22, 2011
I am using webbrowser control for automate login in https://www.itslb.com/tms/ website i have written code also but password input box doesnt hold any value username hold this my code like below
Dim frmform As HtmlElement = WebBrowser1.Document.Forms("aspnetForm")
frmform.All("ctl00_lnkLogin").InvokeMember("Click")
frmform.All("ctl00_txtUserName").SetAttribute("value", sUserID)
[code].....
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Feb 6, 2010
what I have mainform with two labels Text is User and Pass. I have a button on the main form called Set that opens the login form. There I have two textboxes, UserName and PassWord. and two buttons Save and Load. When you type the user names & password into the textboxes, and click save, if file exists you will be prompted to replace existing file. I also have added code to display the user name and password in the labels on the main form. Once you save the file I can now close the project and reopen the project click the set button to bring up the login form, and click load. Now the file is read and the saved username and password text is displayed in the proper textboxes on the login form.I also added the code to display the textboxes in the labels on the main form. Now I'm trying to use the lable text to fill the username and password textboxes on a login form of a website. I've tinkered with several different codes to do this but everything I have done has failed. I really need help getting started in the right direction. Here is my main form code and the code I'm working with.
Private Sub lblPass_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
End Sub
Private Sub btnGet_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGet.Click
[code]....
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Feb 11, 2010
I created a small database application using Microsoft Access, my problem is i dont know how to create a username and password.
here is the code
Imports System.Data.OleDb
Public Class Form1
Dim MaxRows As Integer
Dim inc As Integer
[code]....
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Feb 15, 2012
collect username and password from database for login?
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Aug 15, 2011
I would like to create a login screen with username/password. The login screen should validate username/password before the user is redirected to the next screen.
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Feb 20, 2009
I just want to know how to create a login username and password in VB.net 2008
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Jul 30, 2010
In VB .Net I want to login other computer in network by username and password.[code]...
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Feb 26, 2009
I have to do for my project I am working on is to verify my user name and password on my loginform with the user name and password in my customerc.xml file. So I want to have the user type in his username in usernametextbox.text and password in passwordtextbox.text then have the program search through the xml file for a match loginID (username) and password. If no match is found show error message and if a match is found then frmCustomermaintenance.show
Heres an example of the xml file
<?xml version="1.0" encoding="utf-8" ?>
<Customers>
<Customer>
<FirstName>Jim</FirstName>
[Code] .....
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Apr 9, 2011
I am currently adding my friend's SQL Server into my Application everything works fine, apart from his password table encrypts so the login form only works when you enter the encypted password in. Is they anyway i can make the password field to de-crypt a password code.
[Code]...
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Mar 18, 2009
I am trying to modify the code from this thread to suit my need, but I encountered a [code]
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Oct 15, 2011
I'm attempting to create a program where the login and password will be verified on an SQL database of user information. I keep getting the error "SQL Execution was unhandled" I marked the code that was causing the error in red. I'm using Visual Studio 8.
Public Class Form1
Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
[Code].....
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Apr 3, 2009
On form1.load it loads up form2.... Form1 is not enabled unless form2 is completed right. If completed right remember not to show form2 and enable form1.
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Mar 19, 2012
I've created a library class in vb.net that obtains some data from a database. This dll can be used by other apps so I want to protect the access to this dll's methods by using a login and password. How can I implement this?
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Dec 2, 2011
I was wondering if it was possible to use a forums username and password on a login form in visual basic. If so what would I use and where could I find some more detailed information on it?
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Jun 7, 2010
Basically I created a form for user login. Since I have no idea right now how to use Access witha .NET application I made it simple to text file. the login and password are stored in a hidden text file.My issue is that Kishin or kishin are considered two users.... Any type of specific code I could use so that whichever letter is used VB will consider them the same? Here's my login
[Code]...
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Oct 23, 2009
I want to be able to have a textbox where user enters their username and password.It then will need to check the database and see if the username and password exist.If so take them to another form.[code]I have started the db connection and checking the database but am struggling with checking if they exist.
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