I am attempting to make a small program for my church to power on and off the projector According to the user manual I need to send the following to it. Power On: C00[CR] | Like so: "C" -> "0" -> "0" -> "[CR]". However I am getting the following error when attempting to turn it on by the program: Conversion from string " " to type 'Byte' is not valid. [code]
View 14 RepliesI need to make a small programm for ticketing on a parking for a small hotel.So i have 2 Printers pariking In (for delivery of the tickets) and 2 Readers PArking Out.Both Printers and REaders are working Serial.So i need to poll the serial ports of the printers and readers every second.The data is stored on a SQL database so i need to read and write in the database.Can i do this with 1 PC and 1 programm or 1 PC and 4 programms that are runnning at the same time ?
View 2 Repliesi am trying to make a small program to encrypt files using AES, and then have the password from the AES encrypted using RSA for its use of public keys. i've got the AES part working fine and i found a good RSA tutorial here url....but after i encrypt the AES password (which is saved in a .txt file) using RSA, then i try to decrypt it again, it comes out as an empty .txt file!
View 4 Repliesm using Microsoft Visual Studio Basic 2010 and im fairly new to it. Im trying to make a small program for feedback and send it to my e-mail. I have seen e-mail sender tutorials on youtube but thats not really what I am looking for. Im looking for it to be automatically sent to me, not having to type in "To" so as if its hidden I guess. So Basically
View 2 RepliesOn form 1 , i have a number of buttons that open up different websites.What i want to do is when i click a button on form 1 , i want forum 2 to show ( Form2.show() ) , Form 2 will have a list (Buttons) of internet browsers.
View 4 RepliesIm coding an application that needs to list all computers inside my LAN, and get the status of the machines ex. Power On, Power Off.. in order to Wake On Lan, or Turn it Off.. im using Visual Basic .Net.I all ready listed all machines, now i need to get the status of them..
View 5 RepliesI'm trying to make a USB strobe light type thing. I have a cut USB cord with an led attached to the black and red wires. Now I'm trying to write a script to make the light flash on and off really fast. I've tried several different apis but none are doing it.
View 2 RepliesI have a ppt file and i want to show the slide in the form that the user just see the slid in the form no in power point application ?
View 3 RepliesI am trying to use a power meter to track the progress of my program; this will be for my use only and will be removed later. I would also like to display the percentage run in the meter. I already know what the start and end points will be for the meter. What do I need to search for? I have been looking and haven�t been able to find anything that suits my needs yet. I am running VB 2005.
View 7 RepliesI'm writing a VB2005 program (for WinXP) to implement a lighting show and need to clarify a few things before I buy a video projector.My PC has 2 Geforce 8800GTS cards. One will feed a standard monitor (housing the program control interface) and the other will feed the video projector doing the lighting show.My prog uses GDI DrawString to output text to the video projector.In the prog I want the output of Form1 (control interface) to ALWAYS go to the Monitor (through the primary display adapter) and the output of Form2 (GDI text strings) to go to the video projector (through the secondary display adapter).Can I assign a FORM to a specific Display Adapter or Monitor/Projector so that all output from that form will automatically go to that adapter (monitor/video projector)?If not, what is the best way to do it? Perhaps something like the following? Frankly I have no idea whether this is even remotely correct or whether there is a better way. [code] If the above is correct, will it work for a video projector as well (i.e. is a porojector also set to a specific resolution/bounds and is that resolution/bounds used as its size, as with a monitor?
View 2 RepliesI am using Visual Basic.net 2010 to try to develop a simple VB application to control a data projector using RS232.So far, I have programmed the 'power on' button to open the serial port and send the power on command.The port opens successfully, but the projector does not receive the command properly, so it never powers on the projector.The RS232 command for power on is: BE EF 03 06 00 BA D2 01 00 00 60 01 00
My code for sending the command is: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
What am i trying to do is this:I want to make a small application with 6 textboxes, the user should only can type numbers and the numbers should not be bigger than 20 so then when u click a button (btn_1) it should write the numbers to a txt file.after that i want to read all this numbers and if there are some same (repeated) numbers to display them in a label.
dim wrt as new system.io.streamwriter ("c:/test.txt")
wrt.write (textb1.text & textb2.text & ......)
wrt.close()
I want to make a small logo in the upper corner of a Form rotate.
I've seen on some forums that they have small avatars dancing and such, so I imagine it would be posible to make a tiny image rotate by it self up in the corner in a Form.
Does anyone know how to do this? Link to tutorial, codesnippets etc..
Ps. The goal is to make it smooth. Not turn 4 x 90 degrees.
How to make a small image rotating
View 1 RepliesI want to make a standard button quite small. maybe as small as 16x16
FlatStyle.Popup
TextAlign MiddleCentre
Margin and padding are all zero
The text in the button is an upper case letter X (sanserif 8pt)But even though there's enough space the text is too low and half of it is off the bottom of the button with lots of empty space above the text.
if I make the button slightly bigger. 19x19 then all the X is visible but there's just LOTS of space above and it doesn't look good.I 'could' make my own button class but surely there's an easier way. Is there something I'm missing ? maybe some combination of margin and padding that I haven't thought of ?
I will add that if FlatStyle is Standard then it isn't as bad at 19x19 but that has thick border. I'd really like to use flatstyle popup and possibly a bit smaller than 19x19
I want to put undo in a small program
View 10 RepliesI am trying to build a small program which will allow some one to click on the exit button and the sound will play and at the end of the sound the program will then close. The sound clip is about 3 seconds long Here is what I have:
Imports Microsoft.DirectX
Imports Microsoft.DirectX.DirectSound
Public Class Form1
Private Dsound As CSoundDevice
[code]....
What code would I write so to make a simple app that will import three registry keys. As if I would double click on a .reg file
For multiple reason, I dont what to have to click on the .reg file, and I cant have a .reg file there.
I am trying to learn and make a small application to print from VB.net 2010 to my usb label printer.
View 3 RepliesI have a richtextbox and when i right click i want to select a word[code]...
is it possible to make a small listbox inside a contectmenustrip??
Are there any other ways to make small databases then to use access or sql server?
View 1 RepliesI have been trying, without success, to get rid of a �Blink� at the start of a small program.
My program opens with a title page (Form2, which is visible at 100% Opacity) that I want to fade after a few seconds, this works fine except that at the first reduction of opacity, Timer1's first 'Tick', the whole of Form2 blacks out for a moment. (Blinks)
I have a short demo program to show what I mean but don�t think I can attach it to this question. The code is shown here but I don�t know how to include Form1 and Form2. They are very simple however, they�re both Size 1000,600
Form1 has a single Button (Exit) and a Timer; Form2 has a full-size photo as background.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]....
I developed the code on a XP machine, but I also get the same 'Blink' on my Win. 7 Pro machine.
i have a small program to get text from a DAT file. the program gets all the text and puts it into a rich text box (rtb1) then I click a button (btnformat) to split the text in the dat file into indexes so that I can output the indexes that I want to an excel file. This program works when I use small amounts of data but if I use say 800 lines of text the program crashes/ can't handle the volume of data and just stalls.
View 14 Repliesi have make 1 form in vb.net which has 1 button.i have 1 circuit which can glow a led or bulb.i want that whenever i click on that button it can pass signal to the circuit & glow the led.how can i do this.reply.....
View 1 RepliesI have a little project but ive come to an error. What it does: It goes to a site, fills a form and then submits it. But the submit is too fast. I want it to fill in info, then wait 3 seconds and then submit it.
Here is the
WebBrowser1.Document.All("user[screen_name]").SetAttribute("value", TextBox4.Text & intcount)
For Each element As HtmlElement In WebBrowser1.Document.All
If element.GetAttribute("className") = "submit button promotional" Then
element.InvokeMember("click")
End If
Next
I want it to have a little pause of 3 seconds after the intcount).
I created a small program which one uses the SQLite database. I have a simple table employees, composed of the name and password. I can not write sql script correctly. application code is:
Imports System.Data
Imports System.Data.SQLite
Public Class Form1
Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
[Code]...
I have created a small test program for faxing.On some machines it works and on others it throws the following COM error when trying to send the fax:[code]Here is the source code from my test application.All it requires is a reference to FaxComExLib.[code]
View 15 RepliesI have almost completed a translation from C# to VB.NET, however, I run into some small errors[code]...
View 1 Repliesim new to these forums and was working on a small program to change the school wallpapers. i want the user to be able to choose the imageand not have to put it in a secific directory could anyone please advise me on how to do this
[Code]...
I made a small program which just is one window(frame) i want to put this prog. in my PC when i restart my computer this window display.
View 11 Replies