Login Using Text Files As A Database?
Jul 15, 2011
How it works is the user registers their details on one form which will append those details to the end of the 2 text files that are holding the data.At the moment this hasn't been implemented so we're just doing this manually.Anyway, after that the user can "login" inputting a user name and password into 2 text boxes and the program looks for those details in the text files that they just registered.I want the programme to read this by using "readline" in 2 text files and comparing what they've written in the text box with the corresponding text file and then checking whether those 2 words are on corresponding lines in the different text files, and so ensuring the user has put in the right username and password.
As I have average knowledge of vb.net and reading and writing to text files is new to me, I haven't really been able to debug it properly. But I had one idea to get the program to add an integer value at the beginning of each line and then get the program just to read the first character of each line and check if that was the same. But then I realised It ended up not having anything to do with the text boxes and I didn't know how to compare line by line anyway so It was pretty much pointless, but I'll include it in the code anyway.
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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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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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May 9, 2012
Ok, so today I wasted a bit of time looking for ways to use a text file to save login information. Basically, there are two fields, username and password, and two buttons, sign up and log in. When you click the log in button, I want it to verify the information entered in the fields, and when you click sign up, I want it to add the information to the file. It doesn't seem that difficult, but I'm have a lot of trouble finding a way to do it. I would be very grateful if I could find assistance with this on these forums.
P.S. If it was my decision it would obviously be using a database, but for this particular program I need to be using text files.
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Oct 11, 2010
I'm trying to make a small database out of text boxes and text files, something where sql would be overkill, not to mention beyond my experience. I want to be able to write the contents of the text boxes to a file.txt (the easy part) then being able to retrieve them back out into individual text boxes. How would I pull this one off?
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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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Sep 10, 2009
I barely know VB at all, but I managed to build an application with it, to import some text files into a database. So my problem that is left is that I need to install the application on the server and setup the scheduled task. I have the setup project built, but I can't figure out how to publish it so I can put it onto a CD. I am working in Visual Studio 2005.
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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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Nov 9, 2009
My idea is to have a file dialog box for the users of my program to grab a .txt file, and upload it to a table in my database as some kind of field/column.
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Jul 26, 2010
I have the lines above to login by database. However, I really don't know why always give me the error: "Incorrect fields". I am 120% sure that all the fields of the table are right, including the text that I put into my textboxs. I have already add a user into the database. I can make login in PHP but in VB.NET I just can't.
Try
Dim MySQLConnection As New MySqlConnection("server=localhost; user id=root; password=; database=DB")
Dim MySQLQuery As String = "SELECT * FROM TableLogin WHERE Username = @username AND Password = @password"
[CODE]...
I already tried to show the data of the database into a Datagridview and it works fine, it displays to me all the rows that I had add in the database.
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Mar 20, 2009
I have many text files in a folder. What I can do now is to read through one text at a time and insert it into the database. My little app reads a text file when I debug it. So, I need to run it several times to read all those text files and import them into the database.
My question is how to read multiple text files inside a folder at a time. Here's my code which works fine but it reads only one text files at a time.
Private Sub btnRead_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRead.Click
Dim filelocation As String filelocation = "F: xtfilesch25.txt" Dim chid As Integer chid = 25 'read from file Dim MyStream As New StreamReader(Path.Combine(Application.StartupPath,
[code].....
Obviously, I need a way to loop through a folder and check if there's text file. But I cant get it right.
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Apr 29, 2012
I am using VS 2010 and I want to read the Text File values and place them into variables. This is my code
Me.OpenFileDialog1.FileName = Nothing
If Me.OpenFileDialog1.ShowDialog = System.Windows.Forms.DialogResult.OK Then
Me.TextBox2.Text = Me.OpenFileDialog1.FileName
filename = Me.TextBox2.Text
End If
[Code] .....
I am unable to move pointer to next line.
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Feb 21, 2010
I followed below attached tutorial but I got this error: Cannot open database "mydb" requested by the login. The login failed. Login failed for user 'NAME OF COMPUTER FOR THE NETWORKUsername'. Second question: When I deploy my application which communicates with SQL server, should I put in the installation file SQL server? If I need to deploy and SQL server, I have to configure server, right? P.S.I use SQL 2005. I changed Authentication Mode of the SQL server to: SQL Server and Windows Authentication mode.
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Jan 14, 2011
I have code on log in form but it only get the latest data on username and password column on my database
Here is my code
Public Class Users
Dim MyLogIn As New myRecords
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[CODE]...
This is my connection:
Imports MySql.Data
Imports MySql.Data.MySqlClient
Module myconnect
[CODE]...
This is my record:
Imports System
Imports System.Data
Imports MySql.Data
Imports MySql.Data.MySqlClient
[CODE]...
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Apr 20, 2009
Im designing a program that will read from various text files (preferably RTF files) and then put them into the RTF box in the program when a button is clicked.
Here is the portion of my code that i am referring to.
Try
Dim fileText As String = My.Computer.FileSystem.ReadAllText("c:\" & selectedHero & ".rtf")
infoDisplay.AppendText(fileText)
infoDisplay.Rtf.Format()
Catch
MsgBox("Selected Hero currently has no File with us.")
End Try
Now heres the problem. In the file i have a few pictures and its formatted and what not. I thought since its a RTF file and the Box is RTF it would auto format.... but anyways. It appears like this in the RTF Box.
{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss\fcharset0 Arial;}}
{\*\generator Msftedit 5.41.15.1507;}\viewkind4\uc1\pard\f0\fs20{\object\objemb{\*\objclass Paint.Picture}\objw3000\objh3000{\*\objdata
[CODE]...
Ok so im not sure how i can read from a RTF file and put it in the RTF box with the right format....Ive been searching around for a while.
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Jun 20, 2011
On a image file (PDF), the OCR has recognised the picture and text. However on Visual Basics, how do you search for a text on this image file? The primary goal is to allow a text search (i.e POxxxxx) on all the image files (PDFs). The returns of the search will be the assciated image files where the text (i.e POxxxxx) is found on.
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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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Apr 15, 2012
I am trying to Make a Simple Login System using files
Dim response As System.Net.HttpWebResponse = request.GetResponse()
If response.StatusCode = HttpStatusCode.NotFound Then
MsgBox("Invalid Login")
Else
My Code Here
But When I Debug it, and test it, it still gives me the 404 error. and not the popup.
Here is My Code
Try
Dim response As HttpWebResponse = request.GetResponse()
MessageBox.Show("Allgood")
Catch ex As WebException
[Code] .....
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Sep 20, 2010
I have a program where a lot of the required information for it is stored in text files. I simply read this information into large arrays. However, I don't think it's necessary to load all the information each time. Rather, it would be more efficient if I could simply search through a list of items to find the one I need and then use the data from it, or to find a similar name and use it elsewhere.
Would I be right in using a database? And is database programming done in SQL? I have a book on it telling me to use the SQL Server (IIRC), so I shouldn't be doing it in the VB.NET Express GUI?
Here's an example of what I would do:
Hex = 03 00 => dex number 003
Search in file Pokemon Dex Numbers
003 returns Bulbasaur
Check Bulbasaur base stats in the base stats file
etc
So basically I'm reusing a lot of information. I think a database would be best and it would all be internal right? I'm getting complaints about access denied to a text file (since it's stored in the program directory in the program files).
So to cap up the few questions I have:
-Databases are done in SQL and not inside the GUI?
-Databases would load internally?
-I could search a database without having to load it into like an array or something?
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Aug 23, 2011
I am trying to import a bunch of excel 2003 files all with A:H columns and they are under the same headings etc. into a table in access 2003 database. This is a module in access im making. Im using a file search to look for every file that begins with Format (which they all do ) to get at all the files in the folder path. is there a more efficient way to do this? somehow select all files in a folder? and import each to the same table in access? The DoCmd.TransferSpreadsheet seeems to take each file path individually so I'm not sure how to get each file name in the folder to import it.
I have this at the moment:
Sub Import()
Dim db As Database
Set db = CurrentDb
[Code].....
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Mar 9, 2012
I have multiple file upload boxes on a form in my mvc3 application. Request.Files shows 3 files when I put a break point in the below function and look at it.. Problem is other than coding a counter and using a select case I dont see a way to handle saving each file name to the database column it belongs to... Is there away to assign the variable on the fly I guess you could say So that the foreach loop would drop the file in the correct column. Ie handoutFile1, handoutFile2 , handoutFile3, Etc. As it stands the below will overwrite the filename in handoutfile1 every time the loop is gone through. I thought about throwing a counter in the loop and just put a select case on it to assign the db column based on the counter number. Seems like a cheap work around though. [Code]
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Dec 16, 2010
I am attempting to write an application for booking conference rooms, now this application needs to have a login box with the option to create a new user.
Now I have created the database object no problem, I have designed the login form and also designed the create new user form ( I have also added the dataset to this form which loads the updated user information).
My problem is I am not really sure how to write the code so the login form can check if the username and password match what is stored in my database.
[code]...
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Apr 30, 2009
i have two textboxes and i want to login by getting a username and password from the database ,how can i add connect to the database and get a match of the database entry and textbox entry if they match i should log in if they dont match give error , and how can i create a form of add user to the database?
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Jul 17, 2009
i have an old VB6 system that generates plain text files. When this old system writes "A" into the file, it writes (hex) "41". For an "ä" (a-umlaut, special gernam character), it writes (hex) "E4".
Now i have to process files like this in VB.Net. when i open such a file in the IDE, it displays correctly "ä" (But not always!). To see what i mean, please open a notepad and create a new file "ae.txt" with content: äöü. Now your file contains exactly 3 bytes: (hex) E4 F6 FC.
But when i write code like
Dim strTest As String
strTest = File.ReadAllText("ae.txt")
Debug.Print(InStr(strTest, "ä"))
i get 0 - so i cannot find back the "ä" - what do i need to do, to find it? And 2) for compatibility reasons, i have also to be able to create such files. How to do that? Seems the different encoding types do not work as i think.
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Dec 14, 2009
I am trying to create a program which will read the files that exist in a directory, and then write in a text file the specific information (full file name, date created)i have found several code in the site but i cant make it work, the machine i am running the code is XP and i am using VB2008.The code i have found is the following:
Imports System.IO
Imports System.String
[code].....
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Jan 14, 2010
i am working on an application which uses login form, search and registration in VB.NET but let this topic focus on login first i am using MySQL database via MySQL.NET connector
here is what i have so far Private Sub btnLogIn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogIn.Click
[Code]...
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May 18, 2011
below is the coding i want to ask :[code...]
this code is used for login by querying into the database....the logic is like this..it query accoding to the username text box and pass word text box...if there is indeed such rows in the table, then the bacadata.read, else something else happens...i have a few question :
1.is this the right way of login in by checking the row is available or not?
2.is there any enlightment and solution for the appropriate way to login system by using database other than the one teached by my lecturer?
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Jun 7, 2012
i am trying to make a login screen that is connect to a database(NOT MS ACCESS).i keep geting an error when i try geting it to conect to the database
"Value of type MySqlData.mySqlClient.MySqlDataReader cannot be converted to System.data.OleDb.OleDbDataReader
At rdr = MyCommand.ExecuteReader()
dose anyone know whats going on
[Code]...
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May 1, 2009
I am using VB.NET 2008 and SQL Server 2005. Inside my DB I have a table with login username and password. I want to connect my Login form to get data from this Table and if the user account is valid then it will grant them access to another page.
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Jun 9, 2011
Im working on a login form that connects to an SQL 2008 database. i have created records in the table for users who can login. i however want a code snippet that matches the username and password entered with the records in the database. i have a rough idea about it but
this is what i have:conn - the connection string to the database usercmd - object for executing sql commands userstring - the sql string object Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click Dim count As Integer
[Code]...
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