Login Can't Connect To SQL?
Nov 30, 2009
I was trying to create a Login screen on VB.NET 2003, connected to a SQL 2000 database using the following
Imports System.Data.SqlClient
Dim loginCnt As Integer = 0
Dim frmMain As New frmMain
Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
[Code]...
and then when I try to run it, it shows the following exception as shown in the attached image. What do you think is the cause of this? By the way, I'm running VB.NET 2003+SQL Server 2000 on Vista Home Basic (not sure, but I feel as if this has something to do with my OS).
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Feb 7, 2012
I cannot connect to my local sql server using the following line [Code]. I get login failed for user tedpottel. I have security set to window authority i believed, so my other programs (reporting services and cold fusion do not take in a password. (as long as I log in as tedpottel) So I tried conn = SqlConnection("server=(local);database=by") which said failed for user''.
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Feb 27, 2011
how to connect login system using vb.net to Access 2010?.
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Aug 16, 2010
creating my login how can i connect to database using access or sql or any other data source
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Oct 4, 2011
how can i connect my login form to my sql server 2008, only members of my project is able to sign-in, i want my project to have authentication. can i do it with a stored proc?
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Aug 17, 2009
I am trying to create a login form for a app I made and having some trouble. I have looked every where for a solid tutorial on how to connect to a msaccess file and have always come up short. Either its a old tutorial and I cant get it to properly work with vs2008 or it completely looses me. Can anyone recomend a tutorial for creating something like this? I Wanna be able to upload the access file to my server and have the program check Username/Password when someone try's to login.
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Mar 27, 2012
I need to connect my VB app to html site and login in it...after that I need to view informations in labels may be it will be with ID or anything alse I do not know...[URL]I only need to log in from VB application form with out any webbrowsers and something alses...
P.s. I have my username and password on this site but I want do log in with my VB app...
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Jul 23, 2011
I'm currently upgrading my sql server from 2005 to 2008 enterprise server. I used VB to connect to the database. It worked fine in the previous version of sql, but when upgrading it seems doesn't recognize my connection string.
Below is my connection string:
myConnection = New SqlConnection("server=RAVY-PCRAVY;uid=;pwd=;database=CIEDC");
myConnection.Open();
Where Ravy-PCRAVY is my server name at the sql server login dialogue box. And I used the windows authentication mode.
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Oct 25, 2009
Does anyone know where i can find out how to connect to an online database to authorize a user login? On my form i have TextBox1 and TextBox2
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Jun 11, 2012
I am trying to make a login screen that is connected to a mysql database. I cant seem to get it to work it keeps giving me an error that says ("there is already an open datareader associated with this connection which must be closed first")
Imports System.Data.OleDb
Imports MySql.Data.MySqlClient
Public Class SalePersonLogIn
Dim con As MySqlConnection = New MySqlConnection("Data Source=localhost;Database=testdatabase;User ID=fvfvxcv;Password=cxxvx;")
[Code] .....
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Mar 12, 2011
make a login form connect with a access file?
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Jul 30, 2010
how to properly connect to a MySQL database check if a login is valid.Basically i want someone to write me an example of how i connect to a MySQL database, check if username is correct, check if password is correct. If username and password is correct- it should return True as of boolean dim.
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Aug 19, 2010
how to properly connect to a MySQL database check if a login is valid.Basically i want someone to write me an example of how i connect to a MySQL database, check if username is correct, check if password is correct. If username and password is correct- it should return True as of boolean dim.Otherwise it should return false.
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Mar 1, 2011
I got the above error when i deploy my web application into windows server 2003. How do i resolve it? [code]
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Dec 13, 2010
I had a problem with WebBrowser component. Basically, it works improperly when try to log in on one web-site (Forex Trading Social Network | Online Forex Trading Forum and Social Networking Site). I am working with Visual Studio 2010 Professional. I created a simple WebBrowser trying to access the indicated web-site. The problem begins. Well, the website loads, but when you go to the login page (Forex Trading Social Network | Online Forex Trading Forum and Social Networking Site) and try to log in, it doesn't work. I mean, when I enter the login details the login page just refreshes itself and the login wasn't proceed. The same login page appear with every login attempt. The is the current problem!I check with Google, it works. But, it doesn't work with Forex Trading Social Network | Online Forex Trading Forum and Social Networking Site! Why?
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Jul 16, 2011
it's just for a program registration. i would store all of the registration codes in the access database, then export it to XML, then upload it to my web host. I would then somehow connect it to my Visual Basics login form (Which I have already made). If this can't be done, having them register through the form and having all the allowed codes on the internet (So i can easily edit them)!
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May 3, 2010
I am trying to make a login system mysql try to connect to a mysql database.
Here is my code:
Imports MySql.Data.MySqlClient
Public Class LoginForm1
Dim MySqlConnection As MySqlConnection
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
MySqlConnection = New MySqlConnection()
[code]....
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Mar 15, 2012
I created a SQL DB named MainDB.mdf and a small VB 2010 application with some forms and datasets.Everything was working OK until i got a new computer and re-installed Visual Studio 2010 and SQL server 2010 on it. I copied my DB from the old to the new computer and also copied by VB 2010 project to it. I used Windows Authentication to connect to the DB in the old computer and also in the new one, i am using different Windows user account names though.
I was able to connect to the DB in the new computer in the Server Explorer section, i created a new connection string to the DB and i can seed there is data in the tables. When i run my VB 2010 application created in the old computer get error:
"Cannot open database "MainDB" requested by the login. The login failed. Login failed for user 'D630Admin'."
I need to get rid of that error and be able to add/mod/del data from my DB using my VB application as i used to.
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Apr 9, 2011
I have a login control in my asp.net webform i uses the roles manager...i have two roles admin and vendors i want when user enter username and password in login control then on login button click event it validates either the user is admin or vendors if vendor is admin then it will redirect to default.aspx other wise stay on login page with error. ...how to do this using vb.net ?
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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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Aug 25, 2010
Alright, So with this game I am Making with VB I am Confused on how to make the login system to make the registered user to login to his character automatically other then having to make a new character? Here is my login System code not much[code].....
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Dec 14, 2009
May i know how to change my below login code to support for multi access level login? So that i can differentiate between manager and normal employees login so that i can enable or disable certain features for different department? I have the below code that can serve as a basic login.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'login code can work
conn.Open()[code]......
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Oct 10, 2010
I am currently working with VB.net 2005. I am trying to create a login form and use a text file as a database to login. The part login form is fine but i can't connected to the text file. When i use my coding with a database such as access or mysql is work fine.
[Code]...
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Dec 28, 2011
It is simply a "Y" in the road. If they are Company A, then I want to send the username and password over to that website and log them in as if they typed it in there. If they are Company B, then the same thing but with a different website. I do not know the term for this, so the google results are not very pretty.I can not do this with a query string (not that I'd want to anyway) as I do not want the username/pw to be visible.Here is the other weird thing. This can be done via a simple HTML <FORM> and Submit button as I have tested it. But I want to do it all in VB.NET code. How is it that it is possible with some simple HTML but not possible in VB.NET? I guess it could be a security thing, right? What do the good guys like us do when we legitimately just want our employees to go to one login page, enter their username/pw, and then (based on their username) send them to either pageA.aspx or PageB.aspx which receives their username/pw that they only entered once before on the first page?
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Jun 18, 2011
I've been trying to make a app that logs into a website. So far it didn't work for me.I have trouble because:
- The "pin" (username) box on the site doesn't have an ID. (Can't use getelementbyid)
- The picture doesn't have an ID either
Codes I've tried:
With WebBrowser1.Document
.All("pin").InnerText = "mypinhere"
End With
End Sub
This should have, in my opinion, filled in the textbox. Now I need to click the login button?Also I found this in the source of the site:
<img src="/media/img/text_AccountPin.gif" alt="Account Pin" width="93" height="10" border="0"> <input type="text" name="pin" class="form" size="15"> </p>
As we can see, it says
name="pin"
So I should be able to use "getelementbytagname" right?Also, the formId is logmein (log me in)
<form id="logmein"....
This is what I came up with:
Dim webbrowserDocForm As HtmlElementCollection = WebBrowser1.document.GetElementsByTagName("logmein")
For Each curElement As HtmlElement In webbrowserDocForm
Dim controlValue As String = curElement.GetAttribute("Value").ToString
[code]....
in the next code it's tagname is "input" or "text"? Because I found:
<input type="text" name="pin" class="form" size="15"> </p>
Code for filling in:
webbrowserDocForm = WebBrowser1.document.GetElementsByTagName("text")
For Each curElement As HtmlElement In webbrowserDocForm
Dim controlName As String = curElement.GetAttribute("name").ToString
[code]....
It doesn't give me any errors no more, but it doesn't work either.
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Oct 16, 2009
I'am trying to make a login system with the dll. I want the .dll file to have the password inside of it and make another interface window that the user can login in.
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Feb 24, 2011
For the past couple of days I have been using Visual basic 2008 and learning it.Anyway, I am trying to make a login form that will login to a website with WebBrowser control.and I am noticing that the webbrowser is extremly slow, it takes him about 20 seconds to load a page while mozilla opens it in a moment, why is that?
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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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Dec 9, 2009
How do I create a Login Verification routine (Login Form) in vb.net . i have an windows application with login form contain user name , password , ok button and cancel button .
as this one:
Imports System.Data.OleDb
Public Class LoginForm1
' OK button
[Code].....
but i want to run my application from desktop and will get confirmation if the user name and password correct by checking them in MS Access Database in the server.
so the the application in the desktop and the tabel of user name and password in the server.
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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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