i have a sample code written in VB6 that allows communicating between different application windows and passes data. The link is below:[URL] I wonder how we can do the similar work inside VB.net. I simply claim a method between different applications communicating each other and transmits data. Lately i was using the old code and after my researchs on internet i also found different methods using System.Runtime.Remoting libraries
View 2 RepliesWe are about to have a situation where our application needs to accept/give data to another application. Both applications are residing on the same machine.Two approaches being talked about are using a local web service that will do this or using files that will be used to share all of this data.
View 3 Repliesi need to build a small data acquisition terminal in VB express 2008. it would be able to accept data packets on any serial port or USB virtual serial port. and to parse and send the data to excel.
View 2 Repliesis there as simple way to pass data between 2 apps? it seems DDE support this, but vb.net 2010 seems not support DDE anymore. in my program, I need launch another exe, then wait the exe finish, and get the export data.
both apps are in the same solution. one method I can think of is: writing the data into a xml file, then load it from the main exe when the second exe is done.is there an easier way to do this?
Just wondering what is the simplest way to send data between ALL instances of my app on the SAME windows login on a single machine - I do not want to use anything that opens a port as i don't want there to be any chance of having it blocked by a firewall
View 3 RepliesI have two VB projects in one VS2010 solution. The first program brings in about 60 integers every few seconds from my PC's serial port. The second program, published via Click-Once and running on my customer's PC, needs to see that new data every two to five seconds.
Is there a simple and reliable way to accomplish this, staying with VB?
I would like to know if it was possible to share data between several assemblies using the same DLL.
I'm not looking for a workaround using memory or disk files of some kind of pipes to do the job I just want to know if and how:
1 - I can run an App. referring to a DLL which contains a given shared data structure.
2 - Run another App. referring to the same DLL that will use the already loaded DLL and data instead of creating a new base instance.
I want to build a main application that make the autentication process and store the loged user... Then use X and Y applications to ask the current user and depends of the user will have full access partial or none access to the app. In future a Z application could be created and will ask for the current user also. XYZ apps are lauched from Main app, when Main app is closed the others are closed and User ID data is cleared. Of course the main app will handle the log on/log off process.
- Store User ID in a Database is toooooo much for just do this
- Save the User ID in a local file like XML is a security problem
I tried to do a WCF Service but i think its not possible to send data and store in it.The other point is who to handle the instantation issue... each program will access to the same static data not create independent.
I've used mutiple threads in a VB.NET program but I don't know if I did it right.I would like to start about 3 threads.Can they all use the same methods?Will a separate instance of each method automatically be created for each thread?If not, how do you make sure that the data within the method that is used by one thread is not used by another thread?I would like some data to be shared by all threads.How is data shared among threads?What is the protocol for changing the data and checking for changed data?Is there a good tutorial / website that explains how to handle methods and data when using multiple threads?
View 3 RepliesI have several Visual Studio Extensions (VSX) that I need to communicate with each other. (For instance activate features, share saved files, access project items from one to another.) I could utilize the registry but I have a very bad feeling about that. I was thinking of a commonly placed XML file but I'm afraid of not having the proper permissions to access it. sharing data between (live) extensions?
View 2 RepliesI have 5 websites running on same server and I have some sql tables that I access frequently. that was time consuming and by defining them shared I pumped them in memory. So my application is accessing those static data tables from memory quite efficiently.
But I realized I did a mistake and I occupied my memory unnecessarily while I keep same tables 5 times for each web application. Now I need to find the best way to share that table only 1 time. my options are;
1) using a local database - sql CE. my original sql database is on other server. so it makes the access slower but I can add a sql CE database(to be honest I never used it and dont know if it gives me anything) to access only these tables while they have static rows.
2) I read over forums that making a WCF using tcp binding. not sure if it will give me any advantage.
3) windows service: is it faster than wcf? programming is defiantly faster as i have experience with winservice but nor sure about performance.
Quite a few threads on passing data from one form to another, but I'm struggling to work out how to share data between the two - back and forth.
For example:
Class1 is a class with 10 string properties
Form1 has 10 labels ("Label1", "Label2" etc) and a [Configure] button.
Form2 has 10 textboxes and a [Apply] button.
I want to load with Form1, and create an instance of Class1. Click the Configure button and load Form2, passing Class1. On Form2 I want to manually fill in the 10 textboxes and hit Apply. The Apply should update the Class1 instance and close the form.
Form1's Label controls should then be updated with the data from the Class1 instance.
I'm fine creating the forms and classes, as well as passing the class into Form2 with a custom Sub New(EmptyClass as Class1) constructor. This gets the empty class into Form2, but how can I get the populated class back to Form1?
As Form1 already exists I don't want to create a new instance with another custom Sub New(PopulatedClass as Class1)
It's also key to be able to use the Form2 multiple times, basically ending up with a Data class being displayed as part of Form1 but updated using Form2? (For example if the Class has already been created and populated with data when it's passed back to Form2 for the second time I would pre-load the Textboxes with the values already in the class).
what WPF based apps are?Is it an application that runs under Silverlight? If so, how?I know; Windows Forms based apps,console apps,DLL _ Class Library Projectsand I've had an introduction to ASP.Net.What I mostly want to know is, if WPF apps are for Silverlight then do they also run in a server based fashion like anASP.NET website would when you create ASP.Net webpages?Is it a way of creating what looks like a FORMS BASED application but it runs in a browser instead or what?Please enlighten me a bit further as I have no idea what WPF is all about.
I am developing software that I want any user to be able to use.Right now I have:
Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.jet.oledb.4.0;data source=c:FILE_PATHfile.MDB")
I am using an Application server for calling Oracle Reports and I have a URL to call the report. When the report is called the server converts it into PDF but when report contains large data it takes a lot of time to load. I want to do in asp.net that when I call the report url it opens the PDF file and copies it into the root of my web folder. The next time when I call the URL it opens the PDF file and creates a new PDF on backend for next call. I have made this function to download file
[Code]....
Basically, i am trying to determin if an application made for 1.x will run on a computer with just one copy of the .NET framework installed which is a higher version than what i am targetting, ie: it only has one copy of .NET 2.0, or 3.0, or 3.5 or 4.0 - has one copy of either of these and thats it, the hypothetical computer would not have 1.0 or 1.1 installed.
[Code]...
Usually when you right click on an application, and then click on properties, you can find the applications exe name. Such as, explorer.exe, mspaint.exe, and much much more. But I can't find the exe name of any of my apps.
View 7 RepliesIf I control both applications, what is the best way to communicate between 2 exe's written in VB.Net. For example, I want to drop an XML file from one app, and pick it up with the other, but I do not want poll for the file. I've heard of named pipes, but I found it was complicated. What's the most effecient way to do this?
View 4 RepliesI need to develop some apps that will be accessed from both PC and macs. Can this be done with visual Studio 2010?
View 2 RepliesI have the following
Private Sub startMySQLConsole()
Dim parameterString As String
parameterString = ""
[code]....
For some reason, it partially exists the program. The first letter of the line is starred (MySQL wants me to enter a password).I want to use get to mysql via the my app, which launches mysql.
I'm developing a media player app and upon looking at it for a week now, it seems really bland. I would really like to add some animations for it (besides just moving forms with x,y locations) but have no idea where to start.
Are more complex apps/designs/animations better suited for a language like c#/c++? I've never done animations before (except simple form moving) and I think now would be a great time to get some opinions!
You could probably say this would linger more so on 3d images and 3d animations
I've heard a lot about Mono but I have no idea what exactly it is or how to use it. All I know is it's aimed at making .NET apps cross platform. Could someone tell me or point me to some tutorials explaining how to port my vb code to run on other operating systems? Maybe shed some light on all of this?
View 9 Repliessay i have a piece of code of some function I would use in many different new apps for example
Code:
Dim Expression As New System.Text.RegularExpressions.Regex("S+@S+.S+")
If Expression.IsMatch(txtEMail.Text) Then
[code].....
I would like to develop a VB.Net based smart device app. A simple one. Do any of u know where i can refer to samples of such apps?
View 2 RepliesI have a .NET application that was written in C# and VB.NET using WinForms. We want to slowly migrate this to something new, in many iterations. The new code will be entirely C# and WPF. We would like to utilize Prism.
As far as I know, we can't integrate the old WinForm app in Prism.
I am considering making my old app show the new app in certain instances. For example, when you press a tab in the old app, the new app opens on top of the old app, with the same tabs. Over time, only the new app would be necessary.
I'm looking to pick up a programming language. I've viewed some source code of both VB and C# and VB looks like something that I can pick up well.My question is can VB handle creating apps that will interact with the web? Things like signing me into accounts, downloading information, things of this sort?
View 2 RepliesIs it possible to create console apps like the Edit app in CMD with visual basic or C#? I want the program to respond to mouse input, have menubar, mssgboxes and windows.
View 3 RepliesIm trying to detect when numbers change in a 3rd party app and then capture them for crunching. I do recall something back in the days of vb5 that would list control info when the mouse hovered over it. Cant seem to find anything like it these days. Ive got window handles ok, just cant read the control data.
View 9 RepliesI have learned to create programs in VB.NET with Visual Studio, but the downside of that is that i need the .NET framework, which is not on every computer. Can I create a program in VB.NET without it needing the .NET framework? If yes, what tools do i need?
View 1 RepliesI am having a real issue deploying applications when the URL is not available.how to do updates when the URL is not available? I guess I could always put it in code within a try/catch and do it that way.
ERROR DETAILS
Following errors were detected during this operation.
* [6/1/2011 10:37:25 AM] System.Deployment.Application.DeploymentDownloadException (Unknown subtype)[code]......