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Given everything we already told you, the only surprise is that you still expected this to work without writing your own driver.
You have but a single choice. Either learn to write a driver to do this (that'll take months as you'll need the datasheet on your motherboards Ethernet chip so you can find out how to control it and you'll need to learn how to debug drivers in kernel mode,) or you use a microcontroller and get it done in about a week. Since I have no idea what you're skill set and level is, your mileage may vary.
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Please reply to this post if you are still around and looking for solution
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Hi i have a problem i made a iBuilding installation project with serial number validation using VSI, Orca, C++, or Delphi, then i moved from another computer and i have this
there is a problem with this windows installer package. A DLL required for this install to complet could not be run. Contact your support personnel or package vendor.
what thats mean, how i solve?????
im so desesperate 
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And what does this have to do with VB.NET??
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I am opening a form from another form. But I have a requirement that I need to close the calling form. For that I have put the following syntax
frm1.show()
me.close()
What is happening is both are getting closed. If I don't use the close statement then both the forms remain open. I am a little novice in VB so forgive my lack of knowledge. If anybody can help I will be grateful
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If you close the "startup form", you close the entire application with it.
You can hide the startup form, but you cannot close it.
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Go to the Project Properties and change the option of which form will close the project
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i need only to get any voltage out from my laptop to control a relay
how to get a signal from a LAN port from any pin ?
in my laptop there is no com Port or lpt Port
also the usb port needs interfacing circuits which is not nessesary
in my simple project ... thats why i choosed the LAN Port
i use (visual basic 6) .. any help would much appriciated .
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Having used parallel, serial, usb and all sorts of input/output cards or serial/usb-to-**** add-ons, including building my own, I've not come across anyone trying this. Not saying it can't be done but one function of the 'interfacing' circuits you say are not necessary is to protect your PC/laptop from damage. A relay will require an external power source which if wrongly connected could damage your LAN port and perhaps more. I recommend you get for a USB-to-serial or USB-to-IO converter instead, there's a lot already done with and written about using these.
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That's a very VERY BAD IDEA!
Controlling a relay without external hardware is just going to KILL whatever port you plug it into.
There is a reason why you see capacitors and diodes sitting on the control pins of a relay. This is to prevent power from going backwards INTO the pins you attached it to.
Do yourself a HUGE favor and di it correctly. Get yourself some kind of external controller, like a Netdunio, Arduino, or a Phidgets controller and connect the relay to that. You can talk to those controllers and have them do the work instead.
Don't tell me you can't afford them either. They are VERY cheap compared to the cost of replacing the motherboard in your laptop.
Oh! And DROP VB6 right now. Do yourself a favor and get VB.NET instead. VB6 has been dead for quite a long time now. By using it you're just doing yourself a disservice by letting it teach you all kinds of bad habits that you will have to unlearn when you finally do upgrade. The Visual Studio Express editions are FREE and can be found here[^].
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hi guys ..
there are big misanderstand
i'm not said that i will not using protection circuits
i said dont need interfacing circuits such as ICs ... etc
just one pin gives (1 , 0) to control something .
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You don't get it. First off, you don't have direct access to the pins. Well, at least not without a very special driver being written.
Second, you WILL burn up the chip you connect this relay to! You MUST MUST MUST use protection circuitry in order to prevent this.
Why? A little grade-school science... What happens when you run electricity through a wire?? You get a magnetic field surrounding the wire.
Great! Now, what happens when the electricity is taken away from the wire?? The magnetic field goes away, right? Wrong! The magnetic field COLLAPSES and during this collapse, it generates electricity in the wire!
Where do you think that power goes if the only thing you have connected to it is your precious Ethernet chip??
YES YOU NEED PROTECTION CIRCUITRY!
You've been warned...
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If you read my last post you will find whom dont got it
i said ok , yes i must use protection circuits
my question out of its purpose , as a result of these posts
you absolutely dont understand what i mean
and now we discuss protection instead of control and signals .
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I don't know about your previous posts, nor about any previous conversations you've had here. Never assume that everyone knows your own personal history on any site. It would have been nice if you brought that up in your original post to this thread.
As you've already been told, you need to write a very custom driver to expose the pins on the Ethernet port. This is something you're not going to do in a managed language like C# or VB.NET. You can start by going here[^] and start reading.
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to make the idea much clear and what i exactly need
there is two Leds attached to the lan port , one of them is TX data
which is green color , if i can just get like that signal
then my problem would be solve .
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Well as I suggested earlier, it's easy. You just need to write a LAN driver that will act on your commands.
Veni, vidi, abiit domum
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can you tell me how ... please
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not writing driver .. just using existing one
for example 'Realtek RTL8168D/8111D Family'
sure with Visual Basic .
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Then you need to get a copy of the driver documentation which will explain it. I would suggest using Google to search for sample programs or tutorials on this subject.
Veni, vidi, abiit domum
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Considering what you're doing is very much outside the functionality exposed by those drivers, this is not an option for you. You MUST write a custom driver for this.
Like I said in my first reply, it is FAR easier to do this with a microcontroller.
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Here need use specialy chip like ft232rl. For exsamlple Look : http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232R.pdf
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Code the click event of the Play Game button to do the following
i. Generate a random integer between 1 and 100
ii. Code a loop that will end when the user guesses the number or 10 guesses have failed to find the number.
iii. Use an inputbox function so that the user can enter each guess.
iv. If the user does not enter an integer number display an error messagebox, show the answer, and exit the loop. If the user enters a number outside the range of 0 – 100 display an error messagebox, show the answer, and exit the loop.
v. Show each guess in the Guesses Label using concatenation.
vi. If the guess is incorrect change the message portion of the InputBox function to “Guess Higher” or “Guess Lower”. Hint: Only use one InputBox – not three different ones.
vii. Use a messagebox to inform the user that the correct number has been guessed or that ten guesses have failed to guess the number.
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Please do not dump your homework assignments here in the hope that someone else is going to do your work for you.
Veni, vidi, abiit domum
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