How can I monitor how many times a switch open and close? I am planning to add a label13 to my form and use the LPT port so every time the switch goes high (1) it will add 1 to my label13.text. The Printer Adaptor address in the target PC is 0x378. using pin 10 (ACK) or pin 2 (D0).
View 16 RepliesI need device switch component which an be controlled by code(.net,C# Or vb) ON/OFF state is enough. I have code knowledge in C#, .net window application, I need to make a switch that can be controlled using code via USB port ... so that using that switch I will turn on/off electrical devices (fan,light) for a specific time interval.. For my MINI Project
Note: I need the brief note regarding components needed and how to assemble it.
If you know any link which resembles this type of project pls refer me.
ok i got a hard question I have diferent computers, lets say 200 cps with all known mac address. i got 3 switches with 24 ports each. i want to know if i can be able to know the port No. and switch of a given computer given the mac address... some computer arent in the domain. how could i start puttin this into code
View 1 RepliesI have different computers, lets say 200 cps with all known mac address. i got 3 switches with 24 ports each. i want to know if i can be able to know the port No. and switch of a given computer given the mac address. some computer aren't in the domain. how could i start putting this into code.
View 1 Repliesok i got a hard question I have diferent computers, lets say 200 cps with all known mac address.
i got 3 switches with 24 ports each. i want to know if i can be able to know the port No. and switch of a given computer given the mac address.some computer arent in the domain.
how could i start puttin this into code
Our company has setup several remote devices that link to a switch Whenever there are problems on the device, some technicans will replace it using a new one We have a vb program that can automatically update the device setup in our server when technicans replace devices. So we do not need to login and update the setting manually However, our program cannot handle the case that there are more than 1 device that need replacement Therefore, our idea is to retrieve the ip and port of the router/switch that links to remote device using VB.net.
View 2 RepliesI've been working on a program that monitors ours and our clients server's to make sure they are still on. the ones that are ping able were easy, now I'm trying to monitor servers that are not ping able. what I'm thinking of doing is creating a small client program to put on each one of the none ping able server that sends a packet to our server every 30 seconds over port 80 (not have to worry about firewalls) and once the server program doesn't receive a packet for 2 minutes then it will display/sound a warning. my questions is is this possible, or is there a better way of doing this. right now i just am checking to make sure the server/internet connection is on, later i will look into getting info from event looks, SNMP, etc.
View 4 RepliesI want to write a program that can control port communication in a PC by blocking certain port based on the admins request and also monitor incoming and outgoing network traffic. Can i achieve this using vb.net winsock?
View 1 Repliesi'm using serial port monitor 4.0. i need to know how to received the data and show in a textbox.
here is how my data look like in the serial port monitor:
40 03 04 05 00 00 00 80 05 04 01 00 00 00 11 00 @......�........
80 07 04 05 00 10 00 01 02 02 14 80 07 04 05 00 �..........�....
10 00 01 02 02 14 80 07 04 05 00 10 00 01 02 02 ......�.........
[Code].....
I want to make a process monitor tool with WMI that monitor the processes created or deleted, but the code will not work. Note to reference System.Management,
CODE:
Code dowload:
CODE:
Can I monitor the registry for changes similar to how sysinternals process monitor does it in VB? I have checked many different articles and C# samples but not come any closer to getting an answer, I would like to know if there an easier way (a VB sample perhaps)that you folks can share. Ultimately I'd like to be able monitor other things too like file system, processes etc but wonder most about how the registry can be done in VB...Would using system.management be a start? Or WMI? if so is there a nice VB sample..
View 3 RepliesI have the following windows service file:
Imports System.ServiceProcess
Imports System.IO
Public Class fswService
[Code].....
2 problems: first, intellisense error saying: 'fswService' is a type and cannot be used as an expression. second, I can not figure out a way to pass on to the service the path of the folder to watch (which is stored at My.Settings.userPath).
I'm mohammed from Oman ,I'm visual studio.net programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port
View 7 RepliesI have a Windows form.in windows form have a combo box that give me a list of available port serial with it code (Dim ports As String() =SerialPort.GetPortNames())for example( Com1,Com8,Com15,...).but I want to give me fullname of serial port in device manager for example in dvice manager is these (Comunication Port(COM1) - Printer Port(LPT1) And USB Serial Port(COM8)).how to Get it?
View 2 RepliesI would like to detect the Address and Port number of the Parallel Port in computer.
View 4 RepliesIf I uninstall the COM1 and reboot, it works. If I shut down (power off) and restart, I get the message below. If I uninstall then click on Scan for Hardware Changes,The given port name does not start with COM/com or does not resolve to a valid serial port. Parameter name:portName
View 8 RepliesI am trying to get my 4 port USB relay board to work in VB.net using the COM PORT. I found some code from a poster who has the 16 port USB relay version. When trying his code i can only get it to turn on relays 1-3 all at the same time. The product can be found here: USB 4 port relay
"01+//" - Relay 1 is switched ON
"01-//" - Relay 1 is switched OFF
"02+//" - Relay 2 is switched ON
"02-//" - Relay 2 is switched OFF
[code].....
So i am confused as to how to separate each relay out with that code above and just be able to turn on any number 1-4 relay on or off independently from each other!
I am trying to get my 4 port USB relay board to work in VB.net using the COM PORT. I found some code from a poster who has the 16 port USB relay version. When trying his code i can only get it to turn on relays 1-3 all at the same time. The product can be found here: USB 4 port relay I was following what the guy in the post was doing to turn his on:
[Code]...
Im having problem with the Serial Port. When i run my program, "Access to the port 'COM1' is denied". What does that mean? Im not sure whats happening because theres no error in my code. Someone suggest me to use 'COM2'. Which is also the same result. I have a microcontroller, programmed and run it. And i need to capture the data onto my vb, which is on a multiline textbox. How to i do that?Just to double check my code?
[code]...
how to switch between VB.NET and C#. I need this information because I have a project that needs application building and the programming language is C#.I found a good sample program on the Internet which uses an SDK called Ozeki SIP SDK.
View 1 RepliesThis is my vb.net code:
[Code]...
Exact duplicate: How to switch a large app from VB6 to VB.Net Exact duplicate: Best strategy for moving applications from VB6 to VB.Net Exact duplicate: Conversion tool comparisons for VB6 tool which converts vb6 to vb.net
View 5 RepliesI am using Visual Studio 2010. I have a Splash Screen which starts first (Everything is running smoothly there). Then it Opens Dialog1. My user is required to check 5 boxes (2,3,4,5,6) (1 has been deleted). I used this Code :
If
CheckBox2.Checked
And
CheckBox3.Checked And
[code].....
I've been experimenting for an 1 hour. The code didn't show errors. I tested it and it didn't work. Then I found out that I was working on Dialog 2 in Dialog 1 code. So I tried another thing and that didn't work because I can't put Dialog2 code in Dialog1 code.
I have two machines, on the first of which I have developed my application to a point of satisfactory stability. Now I want to move everything to my second machine.Both computers have the same level of XP and NET Framework code, and both have Visual Studio 2010 at the same level.I copied my application's project folder onto the second machine, but the second machine's VS 10 can't load the project because it can't find a couple of Interop files (e.g., AxMSComCtl2). All of files are present in the project folder and also in its.bin subfolder. The only observable difference between the two machines is the presence, on the first machine, of some Assemblies stored under my user name there. Copying the Assemblies to the second machine didn't help (I hadn't thought it would).Is my application permanently "imprinted" on my first computer, or is there a simple way of resusitating its clone?
View 10 RepliesHow to switch from users A to user B in visual basic? User A should not log off.
View 3 RepliesI always get an exception when I try to switch between different forms in my program. Here is the exception message:
Control.Invoke must be used to interact with controls created on a separate thread
I have attached the forms to very nice variables and this problem occurs when I try to use command like MyForm.Show().
It does not happen when the forms are not attached to variables, but then I have collosal problems with refreshing the textboxes and stuff.
edit;
I have 4 different forms. When I load the main module and main form, in the Sub (...) Handles MyBase.Load I execute the following code:
In module:
Public StartupForm As frmStartup
Public RegularForm As frmRegularUse
Public LoginForm As frmLogin
[Code]....
This is the aproach I worked out to get the full control over refreshing the forms. It is a program for Motorola Scanner with Windows CE. Now, for example, when I enter the correct password in LoginForm, I want to switch to the RegularForm. When I try to use RegularForm.Show() or RegularForm.ShowDialog or RegularForm.BringToFront(), I get an exception. When I try to call the form with the frmRegularUse.Show() I can call the form, but it is being created in a different thread, I believe, so I loose control over it (when I try to put something from the keyboard, there is no response).
I'm creating a wizard kind of Windows Application. I've to show up the next window on click on "Next >" of every window.
FYI, I cannot use MDI architecture.
What is the best way to achive that?
Right now, I've put the following code on Next Click of every Window.
FormNext.Show()
Me.Hide()
I have some code for my DGV Cell painting event:
'Private Sub DataGridView1_CellPainting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellPaintingEventArgs) Handles DataGridView1.CellPainting
' If e.ColumnIndex <> 1 Then Exit Sub
[code].....
VB.NET is good for me, because it is simple and its not complicated and you don't need to be so strict with syntax. I want to switch to C# but I just don't feel up to it because of the syntax and C# being so strict. What are some good reasons to switch to C# and what will make the transition easier?
View 7 RepliesI have a .NET application that was written in C# and VB.NET using WinForms. We want to slowly migrate this to something new, in many iterations. The new code will be entirely C# and WPF. We would like to utilize Prism.
As far as I know, we can't integrate the old WinForm app in Prism.
I am considering making my old app show the new app in certain instances. For example, when you press a tab in the old app, the new app opens on top of the old app, with the same tabs. Over time, only the new app would be necessary.