Asp.net - Communicating With Android C2DM Using .NET?
Mar 8, 2012
I'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 am using the tutorial laid out here http://www.androidsnippets.com/vbnet-server-side-code-to-send-c2dm-messages to attempt to send a message to my device. I have requested a device ID and placed that string in the RegID String.I receive a (what looks like a) GUID for the googleAuthToken successfully, but when the rest of the code executes,the response I get is Error= MissingRegistration. What exactly am I missing to implement C2DM from a server via VB.NET?
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 :)
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.
Ok i know theres a program called eclipse for which you can download android plugins that let you develop application for the Android MObile Phones using the Android SDK.Is there any similar interface/plugins or anyway what so ever, that will allow you to develop apps for the android using say vb.Net 2008??
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
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.
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
I 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.
I 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.
I 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
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.
I 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.
Sir, I am a vb programmer. I want to develope a vb application that can be run on an android phone or tablet.What I should do for that and how can i install this application on android phone or tablet and run it successfully? Generally i use ms access or sql server for my desktop application. Which data base should i use with my vb application on android phone or tablet?
I'm going to migrate my Android application into WP7 platform. Android one contains heavy enough calculation stuff (encryption/decryption), plus extensive usage of DB (SQLite) and some graphics (simple) and I'm trying to figure which language to select: either C# or VB. I have some experience both in C# and VB.net, but can't decide which one to select.
Here my problem is that i wants to write a web application in vb.net which receive the request from android application for login purpuse in xml format and after create a xml format responce, which receive by android application.
I am having VB.net dll files which I need to use in Android and iPhone application. Creating web service doesn't satisfy my requirement as I need to use this in offline mode.
how can I use this in Android or iPhone application development.
I 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:
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.
Service1.svc Public Class Service1 Implements IService1
[code]....
For some unkown reason, I can run the VS 2010 client test and it the WCF host works fine. The code above just returns nothing (it's supposed to return a string)
I use these code to encrypt any plain text in vb2008.I want decrypt and use generated file in my app in android.I know that put files in assets folder and i use it.this code use Cryptography to encryption.how i can decrypt generated files in my android app.and how i use them in my android app.
Imports System.Security.Cryptography Public NotInheritable Class Simple3Des Private TripleDes As New TripleDESCryptoServiceProvider
I am attempting to communicate with set of scales with a vb application that i have written using the comm control. The scales are a Kelba KHX-30 I can read the data from the scales but i have to manually press a button on the scale.
We have a web app in a web browser running on an intranet so security is less of an issue. We have a separate win form app. Is there any way the Win Form app could call javascript in the web browser. The browser can't be embedded in the WinForm.
We are using a .net wizard control for a mobile website. Everything works great except on android devices when the user exits the browser to take a call or send a text message. When the user returns to out web page the android browser is refreshing the web page. Our problem is when the web page refresh the wizard is losing the view state So if they are in the middle of the wizard there previous work is lost. how to combat this. Is there a way to persist the wizard even if the user refreshes the webpage? I basically want to make my asp.net wizard control truly stateless.
