Creating Win App To Communicate Between Users On LAN
Jun 4, 2012
My project is to create a windows application for communicating between users on our LAN, to both send and receive short text messages. I am attaching a rough draft of my Form in Basic, with notes about what I want in the different parts. I am only trying to find out if my goals are possible in VB-2010, before I invest a lot of time searching for and experimenting with the code... so here are my initial questions:
1) Is it possible to build such an application in Visual Basic 2010, and would I be able to use the free "Express" version I have downloaded, or would I need to purchase the full version?
2) Basically, each user would run the EXE program which is the main window (like the attached), and would see all users connected to the LAN (and listening on the specified port) in the ListBox... would receive incoming messages in the top window (output from a console module I have already got working), and be able to send to anyone on the LAN using the bottom window... Is all of this possible in VB-2010?
3) Is there any complications making this application work well on both Windows XP and Windows 7 (64bit) user machines?
I don't expect this to be easy by any means, I just want to know if I'm embarking on something that is possible or not.
Attached image(s)
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Apr 25, 2010
I am not capable of creating different users that have different authorization using vb.net.
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Jan 26, 2011
I am having trouble creating inactive users in VB. I watched the tutorial [URL]but it is for C# and the code behind won't work in VB. I need the users to be inactive when they register and send the administrator an email saying someone has registered to be approved.
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Jul 17, 2009
So I had a report I needed to create and needed to get the total users per job for a system that I was not (and still am not) very familiar with. I asked the developer for that system for the code and was told it was no easy task. He sent me a query that didn't look anything like a user count. I told him I needed something to get all the users for each and every job in order to put it in the report I was building for one of the clients. I was told that wouldn't really work. I looked at his code as it worked on a per job basis.
The following is an example of the "logic" used to get the user count per job in asp.net:
TRUNCATE TABLE1
INSERT username INTO TABLE1 FROM QUERY1 WHERE CRITERIA MET AND job = *passedinjob
INSERT username INTO TABLE1 FROM QUERY2 WHERE CRITERIA MET AND job = *passedinjob AND username NOT IN TABLE1
SELECT username FROM TABLE1 and put in a dataset
[Code] .....
There were no UNION statements in the query1 or query2, there was no select count(*) from table, there was no recordset.count..
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Jun 28, 2011
I have a form which has a textbox named "textbox1", and a button named "Button 1". Button 1 is meant to be a submission for textbox1 (i.e. when button1 is pressed, the value of textbox1 is saved and remembered). I want the value of textbox1 to be remembered on any computer, but I need it to be update-able too. I tried using settings to do this like so:
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.TextBox1.Text = My.Settings.TextBox1
[Code]....
but the problem in doing this is it only works for the current user. When the application is then put on another computer the value is blank.
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Aug 29, 2009
I have created a multiuser application and at different user login i want to create different instances of the application.How to do this? Can somebody give the concept of how to approach this?
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Jan 14, 2009
I haven't been doing a programming for awhile now. But, I was a VB programmer before. I will be creating a tool to log issues encountered by the users of our system. It will be a web based. I'm planning to create it in VB.Net. Any resources that you could share is greatly appreciated. I'm looking for a ready program that I could start with to speed up my programming.
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Jun 28, 2011
I have a form which has a textbox named "textbox1", and a button named "Button 1". Button 1 is meant to be a submission for textbox1 (i.e. when button1 is pressed, the value of textbox1 is saved and remembered). I want the value of textbox1 to be remembered on any computer, but I need it to be update-able too.I tried using settings to do this like so:
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.TextBox1.Text = My.Settings.TextBox1
End Sub
[code]....
but the problem in doing this is it only works for the current user. When the application is then put on another computer the value is blank.
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Mar 8, 2012
What i am trying to is create a function were by a user when he logs in, based on the rights given to them they can either use certain buttons . I no i have to use the enable and disable function.[code]if username is true and user_name is Sales then enable x y z buttons. i been trying looking around and reading and found the following which i cannot get to work with my system but they follow a similiar patten to what i want to achieve.[code]
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Jun 21, 2010
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I have a Main Form which contains buttons to ;
- Log in
- Out for Break
- In from Break
- Log out
When a user presses the "log in" button the logon form appears, the user then enters their username and password. What happens next is where I would like the help.
Process is as follows:Click Logon Enter Username/Password Check Logon Form for errors (eg no password etc) Check User is in Database (using SQL query) If user is in DB and username and pass are ok then refer back to the main form to perform Stored Procedure for what the user wants to do (eg logon or or out for break etc). Set label on main form to show user as logged on My question is should I be using a public variable and calling the main form again or in the user logon form having 4 options and using an IF ELSE to select the appropriate Stored Procedure?
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Dec 29, 2010
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"Update requires a valid DeleteCommand when passed DataRow collection with deleted rows"
My code below
CODE:
So I know I need to add a delete command, but how do I write this in code and do I write it in the saveitem click event? I guess I would because the app crashes when I click save to update the dataset.
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May 31, 2009
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Now I made a shortcut of the .exe of the application and placed it in the startup for all users, and yes the application loads at startup for all the users following the procedures mentioned above. The problem I am facing is, that if the current user logs off, or is forced to log off, and another user logs onto Windows, goes through the whole ordeal mentioned above, the application is denied access to the logfile that was created under the previous user, and thus crashes.
So my question is, how can I created a text file using vb 2008 application, that is accessible by multiple Windows users. I have even tried changing the location of the created file to the shared folder, but the end result is the same.
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Feb 9, 2010
I have an asp.net web app that uses forms-based authentication, a SqlMembershipProvider (using an encrypted password format), and a SqlRoleProvider. I need to know if it's possible to administer the users (create new users, assign them to roles, etc.) from a windows application - the powers that be don't want any administrative functionality in the web app itself.Here is the membership provider definition from web.config:
<membership defaultProvider="MyProvider">
<providers>
<add name="MyProvider"
[code].....
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I get this error
HTML
There is already an open DataReader associated with this Command which must be closed first.
Here is my code
vb.net UserLists.Items.Clear()
Dim connection As New SqlClient.SqlConnection(My.Settings.ConnectString)
Dim command As New SqlClient.SqlCommand("SELECT * FROM Users ORDER BY PersonName",
[CODE]...
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Apr 3, 2012
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Apr 4, 2012
1. I�d like to publish a free vb.net desktop application for the users to download and use meanwhile I�d like to collect usage information ex: user ip address, user�s registration information, used features, time spent� if the user allows the report to be sent back. 2. Also , in order for the user to be able to use the application, he�ll have to register it then, everytime, before the application loads, it gets verified online that it was registered, maybe validate the registration information or a valid user name and password, no critical personal information. The target of this step is for the application to be used exclusively by the registered user and maybe on his computer only. Any alternative way to achive the target is just fine.
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[Code]...
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Jan 14, 2010
I'd like to know what the best way to communicate between two applications via a LAN would be? ..and would it work over multiple versions of Windows (XP, Vista, NT etc..)?
I am setup with Visual Basic Express 2008.
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how to send and receive data via COM3 in VB.
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