I have just started using VB.net, and am currently using VB2010 Express. Previously in VB6, I used the MSCOMM control for communicating via the serial port.
1) What is the minimum development environment required for RS232 communication? I assume VB2010 Express will not be sufficient.
2) What control or class should I use?
At the moment, I need to write a simple peice of software using VB.
I have a computer with VB2008, a RS232 interface; a electronic scale with RS232 interface; a cable with two female sides(this cable is file transfer cable, it enable data transfer between two computers according to the instruction)
My task is to connect the scale to the computer and the computer will keep track of the data sent from the scale.
how to get started? I'm new to VB and have no background in seiral communication, please give details.
My first question is: I have connected them together with the cable, how can I make sure they are really conected (able to communicate)? And can anybody give a peice of code to let me start building on that?
how to run a Windows application within the VB.NET development environment. How can I 'build' or save my VB.net application, so I and others can run this application without runing the Visudal Studio?
View 2 RepliesI'm from an AS/400 (iSeries) background and have no idea about how a team of programmers work within the .Net environment. Lets say a company purchases a new button control. Now, in that company they'll have 5 or 10 developers working with that new control. Its my understanding that even if the control is in the GAC, it must still be copied locally to work on at design-time. My question is, what is locally? Does each developer have a copy on their own PC or is it held centrally on a server?
View 3 RepliesI work for a medical devices company and as such, we need to keep a very strict and regulated development environment.Since we are using MS Visual Studio as our main SW development tool we need it to comply with FDA regulations.So, is Visual Studio (and its compiler) FDA approved?
View 1 RepliesI have inherited a large VB.NET solution that was created in VS 2003. I am trying to update it to VS 2008 to maintain it. I no longer have access to an install of VS 2003.
The solution contains 15 projects that are console applications and 1 that is a Website application. The website application refers to some assemblies in the other console projects.
When I try to open the solution in VS 2008 all the console applications open but as it tried to open the Web application (or website? -- not sure) I see the dialog "Trying to open http://dmedibiz/dotcom.vbproj". It is unsuccessful in doing so. I don't have a website named http://dmedibiz on my development machine.
I tried changing the name of the website in DotCom.vbproj.webinfo, but that does not have any effect in VS 2008. When I go so far as to change the Hosts file so that the local machine resolves "dmedibiz" to the proper folder on my local machine, I keep getting prompted for a login and cannot access the folder even using the administrator login. I have tried adjusting the security on the Folder and in IIS Manager and even in the Frontpage Extensions, but nothing works.
So, what can I do to open this web project along with the other projects whose classes it references? Is there a way to change the website reference in the upgraded application? I actually do not want Frontpage Extensions in the site, but there was some reference to that also in the erro messages about installing them to "fix" the problem.
Here is the error I am receiving...
Unable to open the Web site '[URL]. Could not find a Web server at 'http://dmedibiz'. check to make sure that the Web server name is valid ...'
Can anyone tell me how to change the website location reference? Or must I remove the Web project from the solution and create a new Website and then copy in the files that need to be worked on?
Why would database drivers work in the development environment of VB.Net and not once the project is built and installed on the same pc? I've tried the MS ODBC Oracle driver. I've tried various ODBC datasources. All work when I am in the development environment but none once I build and install. No matter whether the configuration is Debug or Release. This is the only project having this problem. I have other apps (VB.Net) that access the same database (Oracle 9.2) with no problem.The environment variables are the same during both types of runs. The error messages vary depending upon the driver being used.
View 1 RepliesIn VS2005, I noticed that when you go from the code window to the form window, the form immediately appears, but then redraws again, and takes about 4-5 seconds to come back. Is there any way around this annoyance? Has it been fixed in VS2008? In general, has anyone noticed any speed improvements in the development environment between VS2005 and VS2008?
View 9 RepliesWell I've finally decided to upgrade some of my vb6 applications. Anyway I have two forms that are very similar one is customers one is vehicles. One of them is working on form load and one of them isn't. The one that isn't working I've traced the point it stops down to where there is a green line left of the code on the left bar of the development environment. This green line doesn't exist on the form that works. What the green line in this photo means? [URL].
Bigger Picture [URL]. I found a page that says the green simply means the code was saved but it's only on the form that stops working right after the execution of the sql statement. For some reason while stepping through the code it returns to the show command that was called to originally open the form right before the form opens but it skips everything with the green line next to it. I went and disabled tracking and it went away.
tell me the settings required for serial port communication
View 1 RepliesI have developed a microprocessor based devise. It can communicate with laptop through RS232 as a VB application. Now most of laptops have USB port only. So I want to use USB replacing RS232 port on laptop side but not change anything on the device side. Can I do this using a USB-RS232 converter? How to change the VB software?
View 1 RepliesIn case you are interested and have not spotted this.>>
http://gdk.thegamecreators.com/ee Professional Game Development Environment
I have an app that I'm debugging and I need to pause it by clicking on a "pause" button in the development environment. I don't want to stop it programmatically, just manually to check what it is doing. I know this should be simple but I can't find a pause button anywhere on the toolbar.
View 4 RepliesI'm using Visual Studio and table adapters using an Access DB as the backend. I need the minimum 4 digit value. I want to get next available 4 or 5 digit number. And this will change depending upon the users request. Currently I use a table adabpter query. But how would I write a query. I suppose I could do a long iterative loop through all values until I see a 4 digit.But I'm trying to think of something more efficient.
Function GetNextAvailableNumber(NumofDigits) as Long
'SQL Code Here ----
'Query Number Table
[code]....
I have VB6 Dll which I am referencing in vb.net ,I am calling the following function in it. It working fine in developemnt environment but not in deployement environment.
Error Method not found: 'Boolean MyUtils._MyUtils.LoadMyObjectRecords(ADODB.Stream ByRef, System.Array ByRef)'.
I have a class set up to hold values on a registration form (VB.NET, MVC), and among the properties is a Password property:
[Code]...
I am trying to connect a PC with peripherals thru RS232.The PC program has to send and receive value in HEX to peripherals.However, the value sent out seems to arrive at peripherals in ASCII.Following is two of my trial codes:
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim HexArray(8) As Byte
[code].....
My program connects via the rs232 port to a pump and it managed to start the communication and sending data. But the problem arises when i try to read the return signal from the pump to pc. This is the piece of code i've used:
Code: Dim returnbyte(0) As Byte Dim ByteIndex As Integer = 0
Do While ClassSerialPort.BytesToRead <> 0 ReDim Preserve returnbyte(ByteIndex) returnbyte(ByteIndex) = ClassSerialPort.ReadByte() ByteIndex = ByteIndex + 1 Loop
[code]....
I obtain the following results:
Code:... 6 12 0 0 0 92 ...
From the manual i understand which byte to read. For e.g 6 = ACK. The problem is how to interpret the 4 bytes together in a string for e.g 0 0 0 92 means 9.2ml ?Is there any way to read the decimal point?
I have downloaded the vb script and it works as it should, its a program where you have some buttons so that you could trigger the relays.But i need several small scripts, one for each relay on / off so that i can call them from a .bat file with argument.i have a .bat named relaycard and in thet i have created argument like
relay1on
relay1off
relay2on
relay2off
and so on.
The small program relay1on should just do the jobb and then close itself.Maybe its a little bit clearer now.On the link that i posted there is a manual and even links to the vb program,
I chose Visual Basic 8 as a computer interface to communicate through RS232 (serial) to my microcontroller, which in turn will do its own thing to transmit data it receives from the VB GUI through wireless
I have used VB before but it's been a long time. I looked at some of the settings and it looks like it has a SerialPort com component I can use. Will it suffice for this project?Might be a simple question, but just want some tips from experienced developers.
I'm attempting to invoke with parameters:[code]Value of '415' is not valid for 'Value'. 'Value' should be between 'minimum' and 'maximum'.Parameter name: Value..What does this mean? Is there a way around it?
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View 11 RepliesDoes vb 2010 have a 'REQUIRED" property or control that allow you to make a textbox a "required" field? I googled and saw something about required property in controls in toolbox but somehow I could not find it anywhere in my vb 2010 toolbox. Would it be easier to write it? Does anyone have sample code?
View 6 RepliesI have a Delphi program that communicates with a vb.net dll that I created. The vb.net dll communicates with a Fluke scope meter via an RS232 connection. I have created a program that communicates correctly via RS232, giving me the anticipated value. Though, when I package this up as a dll and access the dll from my Delphi program I always receive a value of "1", rather than the value I was expecting (most cases a value in and around 240).I know that my delphi program is definitely communicating correctly with the dll and that my dll is definitely communicating with the scope meter
Here is my vb.net code:
Public Interface IFlukeComm
Function GetReading(ByVal Command As String, ByVal PortNum As Integer) As String
[code].....
How can I get the port name (COM6 for example) for a given hardware ID, such as USBVid_04d8&Pid_1234, and vice versa? I'm using an RS232 to USB interface.
View 6 RepliesI currently have software that sends out plain text(i.e. 'X') to comm 1 port and was wondering if there was any way to capture that plain text and also respond to that port on the same compute as the port without having anything plugged into the machine (i.e. 9 pin serial cable). I am trying to avoid buy any more hardware as this is an objective to acutally cut down on hardware.
View 1 RepliesI am trying to read a packet of data which has come in from RS232. I need to be monitoring the port until data comes in to be actioned. I have been doing this fine for some time using the following code:
Dim strline As String = Nothing
Dim comPort As SerialPort
Dim bIsOpen As Boolean = False
[Code]....
The code above works without a problem unles byte 1 or two are greater than 127. Basically, all of the characters that are not converted seem to be 128-255.
I am using VB 2008 express. Clearly I need to read each byte individually and store it as a byte within an array instead of a string but i am not sure how to do this.
how to get around this either through reading bytes properly or through using a different encoding format
I am using a GSM modem RS232 where a sim is inserted. I want to write a VB.NET application so that i can send or rcv messages using the modem. How to proceed for same?
View 2 RepliesI have been using VB 6.0 and new to VB.net (VB 2005) I want to know how to read characters from RS-232 port.
I have created serialport object and want to read this sort of thing "A,2451.3955,06715.8253"