I have a login form with the code below[code]...
When i run this code and click OK, i get an error at f.show which says'Object reference not set to an instance of an object.'
How do i go about it so that i can get a smooth login an access my MDI form?
i can get this program to read the file but i now want to be able to call on the file from another form and use specific pieces of data for login verification and balance handling purposes.
[code..]
above is the contents of my txtfile but how do i reference anything in it?
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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.
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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?
View 6 RepliesI 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.
View 3 RepliesHow 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.
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.
View 3 RepliesI have a login form with username and password authentication . It works fine. But I want to give option to remember login info option in the form.
View 7 RepliesI have a VB .NET 2010 application. I added a C# project to my solution. I tried to call the form called 'main'. However, I could not figure out a way to do that. What is the best way to do that? I Goggled, and did not find anything. Actually I noticed that my Developer converted everything to VB .NET.
View 5 RepliesI got the above error when i deploy my web application into windows server 2003. How do i resolve it? [code]
View 3 RepliesI 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?
View 14 Repliesi have a main menu on my program which has the option of registering. I have enter name and password ..and a button Confirm
i want to be able to store the added username and pasword to the login form so that it will work...
what must i do? also where would this data be stored...
I need a code that can allow the login form to search for pin number stored in another form example when a customer enters the pin number and clicks ok button the login form searches if the pin number exists in the bank details form
View 7 Repliesim trying to do where the main form is a login form if the USer and password matches that in the code it goes to the main screen if it doesent it launches a form saying this user and or password is incorrect and when you click ok it closes that message window as well as the login form stop the program from launching is has to match the user and password from the text on text box one and masked textbox 1.
View 3 RepliesVS2010 VB.NET windows form app I have a login form that is my startup form.when uer hits OK I display the main form and close the login form, like this:
PrivateSub OKButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OKButton.Click
frmMain.Show()Me.Close()EndSub Problem is the application closes with me.close. Why? How can I close only the login form and leave the main form urnning???
Im using 2 forms
How Would i make a login form that will save my data to form 2 like i sign into form1 and it saves like my username/email and password from form1 to form2
I have a code which when used, firstly application will run the Splash Screen application. Splash Screen will be active for several second, and then the main of application will show in full screen. Before the user use the application, user must Log in first. This works but the problem is that it loads the splash and login form twice. To worsen the situation, the second login form that appears gives access to the system even when the cancel button is clicked while the first login form just works fine. My codes for the three forms are as listed below:
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I have two forms. Form A and Form B. Form A has a datagrid that is populated from a SQL Database Table query. When a button is pressed Form B is launched that allows you to add a record to the database table. I need for the datagrid to be refreshed and show the newly added record when I close form B and go back to the parent.
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I need to know the proper way, or maybe I should say, the different ways to call another form from a parent or preceding form. I am currently using ex: formname.showdialog() to call my next form, but I am uncertain if I should be using that in every situation. [code] Whats the difference between these different methods? (ex: .showdialog() , .show() )I tried both of these to open a temporary form to retrieve a persons name from a database, so as the users progresses through my training program they can keep track of their scores.But, I also call other forms as I branch through my program, from the main page, to a secondary page, to a testing page, to a results page and then back to the secondary page
View 5 RepliesHow can I disable the parent form when I call a child form?This code doesn't disable the parent form like I thought it would:
frmChild.ShowDialog()
I am trying to program a dialogue box to appear when the exit button from my 'Login' form is clicked. The form has three options; yes, no, cancel.
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I have a small program which draws some lines with a method called: Drawlines But Now I want to call this method in the load form routine. So if the form is loaded the lines should be drawn in the picturebox. But is this possible or should the form first be loaded completely before you can call methods in that same form?
View 6 RepliesCould i call the child form events like (closing ,load, activate,closed) .
View 6 RepliesI have two form :
class form1 'parent form dim number as integer
public sub create ()
dim f2 as new form2
f2.MdiParent = me[code]....
In form2.vb how to use variable number and method test
I'm sure I'm doing my login process for my app in a not so perfect way, but as with lots of things, it works. The issue is to make it work I have to use the very unpopular DoEvents thing. I would like my application to show a login screen before loading my main form. Currently I have a login dialog box with a FormOpen boolean property and an authenticated boolean property. If a user logs in successfully, I hide the login form, set formopen to false, and authenticated to true. If they cancel out, then I do the same and just set the authenticated property to false. If authenticated=false then I end the app, else I show the main form via application.run(MainForm)
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I have to use Form.Action to redirect to a script that will be picking up values from my page. It is worth noting that this script is external.My issue is that I also want the button that is clicked and has the Action hooked up to it, to also complete some functionality in the code behind first.Is there anyway I can either :In the buttons click event handler, can I set the Form.Action and then call something such as Form.Submit?OR Set up the Form.Action in advance and then somehow have the button posting back before the action takes place.
View 5 RepliesI have one form called invoiice1.vb In the load event how can i call another form ? I also call some values of thatt form
View 2 RepliesI have a sub declared inside a module which accepts form as argument.
sub display(fname as form)
What I need is to call the sub form the load event of a form. I tried the following.
display(me)
But cant access the controls of the form inside the sub.
sub display(fname as form)
fname. 'no controls of the form are listed?????????????
end sub
I added toolstrip control into MDI form. on the parent form, creat many toolstripbutton like tbAdd, tbSave,tbEdit.When I open child form, how to call tbAdd or tbSave.. toolstripbutton on the MDI?
View 1 RepliesI'm trying to get a password form to login into another form but ever time i hit the complie button it just goes to my main form rather then the login first,
View 16 Replies