is there a way through vb visual express 08 to ask a printer if it has toner or paper? im not to sure on how to communicate with printers in this way if it is at all possible.i am writing a program to display the status of the printer and this is key.
View 1 RepliesTrying to write a Vbscript. Actually, I'm trying to modify an existing script that I found on the internet. I basically need the script to run on workstations, delete printers from our old print server (master), and install the corresponding printer from our new print server (dc01). I should also mention that the printer names have changes slightly. So far, the script does a great job of deleting printers from Master, but none of the corresponding dc01 printers are installed.
Here's the code:
CODE:
I want to code an app with recreational purposes. This should be a Desktop app that detects itself running on other computers on the same LAN and communicates with them. By communication I mean that I should be able to pass anything from on to another. note that although I'm not asking for code (that would beat my purpose, of course) I think some small snippets wouldn't hurt. In any case what I really want is the "recommended procedure", I mean what Microsoft recommends for this environment, and documentation :)
View 3 RepliesI've set up this function in my web app to send push notifications to Android devices:
Private Function SendNotification(ByVal authstring As String) As String
Dim request As WebRequest = WebRequest.Create("https://android.apis.google.com/c2dm/send")
request.Method = "POST"
[code]....
However, whenever I call this function, I get the following error message: The remote certificate is invalid according to the validation procedure."
I have VB.net Simple application with form1.vb , UserControl1.vb and a simple Dataset with few records included. In my UserControl1.vb I'll added a Bound DataGridView1 with Products Datasource. My question is.. How can i filter the Products table from UserControl1.vb? The Filter Value ("ProdID") is from Form1.vb with textbox1(receive the value.). here is my Form1 code
[Code]...
Im new to using databases in my programming and to be honeest i am struggling.i need to get the program to communicate with my database to allow the user to login this is the code i have so far as i say i dont know much about it so its a bit bodged.
[Code]...
Alright today im going to make a chat program in C++ and VB.net VB.net will be the server and C++ will be the chat room. Im doing this becuase some people dont have .net and the program fails so im trying this so then everyone can use it. How would i do this? Like C++ sending information to VB.net and printing it out on a textbox
View 2 RepliesI need to communicate between multiple applications (one server and multiple clients) in the LAN. While googling I came across 3 concepts (TCP/IP, Named Pipes and WCF). I also understand WCF needs lot of study for a starter like me. I need to have one (server) application running on one machine, the values generated by it should be displayed immediately on the other (client) application which will be running on multiple machines in a LAN. Also when the user pauses the process from the client application, it should pause the process on the server application.
View 2 RepliesWhen you go to the Start button and then "Printers and Faxes" and you see a list of the printer objects defined on that PC. In my App VB.Net app I want to be ale to use a drop down box to display this list of printers and allow the user to select one of them.So, Not necessarily a list of printers on the Intranet that the user is connected to, only on their personal PC.
View 1 RepliesI have an application which the user can open multiple instances on the same machine. However, a section of the app would have sync problems if more than 1 instance has control over it. This is where I thought of transferring control, or sharing, between them. What should I be looking into?
They would have to be able to identify which one of them has control and to send text information over. I thought IPC or Named Pipes could do the trick, but I'm unfamiliar with them and examples seem to indicate only a single server will work. Here, I have multiple instances of the same app and every one of them needs to be able to listen for that request for control.
I am communicating to a device using a USB to serial port (VCP). I am having a problem with the usb failing. When the usb fails my app will lock up and the com port is lost. I have seen a post about this but cannot find it.
View 3 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].....
I've been trying for a long time to do what seems to be the most simplest of things..I have a remote host and I need to know if certain posts on that host are open or closed.Many examples on the net that I have found arent complete, and because I havent worked with VB.net for long I dont knowhow to complete them.Here is my code:: The issue is with this it tell me the target port is always closed, when I know that it is open.Code:Dim host As String = "www.google.com" Dim port As Integer = 80 Dim addr As IPAddress =CType(Dns.GetHostAddresses(host)(0), IPAddress) Try Dim tcpList As New TcpListener(addr, port)tcpList.Start() Catch sx As SocketException MessageBox.Show("port is closed") End TryA friend of mine suggested using WinSock.. I've not dealt with it before so I don't know what he's on about.
View 2 RepliesI have a project in VB .net 2008 and would like to communicate with a Sharepoint site on our companies SP server. Is it possible to interact with the SP site such as:
Create sub-folder
Upload and download files
Change authority levels on folders
I am basically after some information on what you would believe to be the best way to send strings from a mobile device (possibly a windows mobile phone) to a PC and vise versa. Just so you know the distance could be upto 4 miles and no direct line of sight.
View 6 RepliesHow can i create a program using vb.net to add and remove networked printers?
View 2 Replieshow to set the printers paper orientation using vb dot net
View 17 Replieshow to set the printers paper orientation using vb dot net
View 1 RepliesI have created a windows service that monitors power events on the host machine. The next step that i wanted to do was to send custom messages to the service. To do this i have created a windows application and added a service controller control to it (drugged it from the toolbox). Initially i tried to send messages to my machine which worked fine (both the service controller and the service were running on the same machine)
Dim scSL As New System.ServiceProcess.ServiceController("MyFirstService", ".")
scSL.ExecuteCommand(128)
but when i tried to send a message to a remote machine on the network
Dim scSL As New System.ServiceProcess.ServiceController("MyFirstService", "machine001")
scSL.ExecuteCommand(128) i got the following error:
"System.InvalidOperationException: Cannot open Service Control Manager on computer 'machine001'. This operation might require other priviledges. ---> System.ComponentModel.Win32Exception: Access is denied.
Anyone knows what priviledges i need to set on the machine that has the service controller? Alternatively can anyone recommend a solution to this issue?
I am building a client-server type applications and they are communicating over sockets. This is the first time I am doing such a program and I have been learning off a web example and thought I understood it all but it would appear I am missing something as it starts to work then errors. Here is what I have:
VB
Dim serverSocket As New TcpListener(ListeningPort)
Dim clientSocket As TcpClient
Dim netStream As NetworkStream
Dim BytesFrom(1024) As Byte
Dim DataFromClient As String
[Code] .....
All of the above works and if I open up a telnet command window I can connect to my machine running this code on my specified port and in the command prompt window 'IDENTIFY' appears as it should from the above code. But it then gets to this block an errors on the second line:
VB
'RECEIVE FROM CLIENT
netStream = clientSocket.GetStream()
netStream.Read(BytesFrom, 0, CInt(clientSocket.ReceiveBufferSize))
DataFromClient = System.Text.Encoding.ASCII.GetString(BytesFrom)
Now as far as I can tell it shouldn't be processing the first line
[ netStream = clientSocket.GetStream() ]
Until I send something back from the client because then going on to the second line its trying to process something that isn't there yet.
The actual error I get is:
Specified argument was out of the range of valid values. Parameter name: size
On the line:
netStream.Read(BytesFrom, 0, CInt(clientSocket.ReceiveBufferSize))
I have a need to be able to communicate with a VB6 application (I have the source code) whilst it is running. I just need to get it to display some predefined forms. Any tips on how I could achieve it. I was thinking along the lines of using Sockets.
View 1 RepliesI have been attempting to do this in so many ways. I have tried using rundll32 printui.dll, PrintUIEntry and for some reason it stops working on vista. I have no clue why. It wont even try to work with HP printers using the inf file. What is the best way to add a LPR port printer programmatically? I can create the LPR port with NO issue what so ever.
View 3 RepliesI have a routine, with the printDoc_PrintPage() function where i loop my pages and print them on the default printer.
What i need to do is print page 1 on a special printer and the other pages on the default printer.
How can i control the printers paper source?
Im printing a document but i want the user to only be able to print from the Manual feed tray on a HP 2055dn printer.
i currently have ths code in place but is anyone able to tell me if it would work or not.
i was using a print dialogue box but changed my mind as i just want to print the document as soon as the button is pressed.
' Allow the user to choose the page range he or she would
' like to print.
PrintDialog1.AllowSomePages = True
[Code].....
I have multiple forms and reports with different print area. Some are designed to print to a thermal label printer and others to department shared printers. Currently the user is able to change the printer in print dialog box and print to differernt printers. I want to be able to create a form where the user can assign different printers for different jobs and not have to worry about it.
The problem is, i have never worked with printing function and my collegues arent too smart so I was wondering if someone can throw me ideas on where to start so i can start googling for it.
way to detect Detect physical/Virtual Printers in VB.Net?
View 1 Replieswhy this code doesn't work?
Dim s As String
For Each s In PrintDocument1.PrinterSettings.InstalledPrinters.ToString
MsgBox(s)
Next
I have what is basically a text only printer (a Zebra 105SL) connected to my network at a static IP address. I have downloaded Zebra's Text only driver for it and set up a print queue named "Zebra North Text". I can print to that queue from Notepad just fine.
However, I am trying to print from a VB 2005 (soon to be upgraded to VB 2010 or VB 11) application. All of the standard VB sample printing code assumes I need to render the text in Fonts, etc, which just confuses the Text Driver.[code]...
I need to check all the printers of my faculty by sending a test page to everyone of them. And I want to do that with a little program in VB... All the printers are in the same server. I've found this piece of code : It should get the names and put them in a list box (the following code) and them send the print request
[Code]...
Am looking at making a small application that will list printers on two file servers at two separate sites, from this app they can add the printer/s to there local computer.
I have found a small application on the web but there are a few improvements it could do with.
They are; Show all local printers without having to click on a check box. Show sites printers without having to click on a check box. Show comments about the printer�s location other then just the site.
If it is possible I would like to update this one, but if there are any other examples where I could download something similar, or even some help with how to begin to create a new application.
Here are some screen shots, of the application form and the xml which holds the folder structure for the sites.