Call 'C' Based DLL From Program?
Sep 16, 2009
I am the author of the MAPM arbitrary precision math library. This is a library which allows the user to make any calculation to any desired precision level. The library is written in straight ANSI C.
On many occasions, I get an email on how to use the library from a VB.NET / Visual Basic application. I have very little basic experience, and I don't know what to tell them. I would really like to tell them how to proceed to call MAPM from a basic application.
Let's assume they can compile the library with a C compiler and create a DLL.
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Jul 23, 2009
I want to be able to call a certain stored procedure based upon different criteria. May I do something like on lines 6 through 12 ? If so, am I properly creating my command object on line 3?
1 Dim connString As String = ConfigurationManager.ConnectionStrings("EMRConnectionString").ConnectionString
2 Dim conn As New SqlConnection(connString)
3 Dim sprocComm As New SqlCommand
[Code].....
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Apr 26, 2012
In short I want a call a function jAlert() from jquery.alert.js file in a .aspx.vb page.. More details below
"When I click on "update page" the control goes to "ActionRepeaterItemBound" on code behind and then to my action.js page and this way I am able to add attributes and use them while calling my jscript function. However when I click on "Submit Update", the control first goes to action.js and then to "ProcessAction" on code behind. So I am not sure how I need to add attributes before the control goes into action.js."
I have a file jquery.alert.js which have functions like jAlert().
I have a file .aspx with part of code as below
[Code].....
My aspx.vb page has a function as below where attributes are added to control and are used in a page action.js to call the jAlert function
Protected Sub ActionRepeaterItemBound(ByVal Sender As Object, ByVal e As RepeaterItemEventArgs)
I want a similar logic to be performed on my LinkButton "CurrentActionCommit". How can I do this?
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Apr 24, 2012
So I'm trying to write a MasterMind game, but I have a problem I have 40 pictureboxes set up in 10 different rows, and I want to have one code handle all 10 rows, rather than copying and pasting the code and changing the names of the pictureboxes. I've been trying to use a variable to achieve this, but if it's possible, then I don't know the correct way to do it.This is what I have right now:
[Code]...
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Dec 1, 2010
I am writing a program in VB 2008 and i need to be able to select different pages. i have a ComboBox with 15 values in it, and based on what value the user selects, that is the Form i want it to go to. for example, if i run the program and select the Value "electrical", then it will take me to the form that corresponds with that selection. [code]...
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Dec 23, 2011
I already know how to call insert, update, delete & select procedures in DataSet.xsd window. And I also know how to call queries by table adapters. But I just found out that its not possible to call all functions by queries (such as insert). It works when I test the query but when I try to add it, it says "Failed to get schema for this query". So I built a few stored procedures which do many functions (such as transaction, insert, update etc...). But I am unable to use these stored procedures in VB form. I found some tutorials mentioning that it can be done by defining connections and some other stuffs with which I don't want this to be. I want to call these procedures by writing code in VB code editor window with DataSets, TableAdapters, BindingSource etc...
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Apr 8, 2012
I have a procedure at the end of my console application that ask the user to either hit enter to end the program, or type s to perform another search. The issue I'm having is no matter what the user types in the program end. What I would like to happen is if the user types s, then the program starts over and lets the user perform another search. The program is procedural and I need to find a way to start back off at the top of the program which ask the user to type a name to search.
[Code]....
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Jul 11, 2009
How to make a lan based program using ms access is there a exact code do I have to put in my connection string or what are the configurations should I make in the computer.
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Dec 13, 2010
How do I reach the bit.ly API with VB.net 2010”is it even possible? How?
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Feb 25, 2010
I have a DLL that was used by Delphi and now I need to call it from VB.NET 2008. The documentations for the function is[code]...
I supply a RS232 port in the COMM_INFO structure and the function is supposed to return a result of type IFL_RC and a ConnectionID. [code]...
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Jun 3, 2011
I'm trying to call other EXE's from my program I'm writing. Inside my project I have a folder called progs with exe's inside it. How can I call these from button clicks?
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Jan 5, 2010
How can I get my program to take a number from an Access Database and by using the internet call the persons number. I will have a pre-recorded message that I want the program to use when it makes the call, but my main problem is I can't find anyway of getting the program to make the call using the internet.
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Mar 18, 2009
I have written a set of functions in VB 9 that I want to be able to call from several different programs (also VB 9). I compiled the functions into a dll and I am attempting to call the functions but to no avail. Within the dll project, the class is Public as are the Functions.Within the exe project, I have declared the dll functions using Declare statements of the following form:Public Declare Auto Function FunctionName Lib "DllName.dll" ( ) As String.I thought that this was all that is required. It builds fine but when I attempt to call the dll functions, no entry point is found.
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Oct 18, 2011
I have created two forms in vb.net. From the first form when i click the "delete" button the form2 has to get displayed. I tried new form statement. But it is showing a blank form. I want to display the second form which i have created.[code]...
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Oct 2, 2010
My name is malky, a programming student currently learning visual basic 2010. I mostly know basic level of programmming (such as playing around with textboxes and such) and for my next project, I need to be able to call an executable file (the On Screen Keyboard to be exact) as my program first loads.
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Apr 27, 2010
I am working to a VB.NET windows forms projet in .NET 1.1. And I have this type of architecture, very simplified.[code]...
Depending of the type of test I am doing I create an instance of a specific test derived from BaseTestLogic. But I found that after hundreds of object creations I can have StackOverflow exception.
I checked my code and saw that I forgot to remove the handler to Timer Tick. The question is, where and when is it correct to remove hadler?
Do I need to implement the IDisposable interface in the base class and RemoveHandler in Dispose?
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Jun 5, 2010
I have created a item in my VB.NET web based application and called it testpage.htm
Thai piece of code displays a button to click followed by a message.
How do I call this piece of code from VB.NET? so the button and message will appear on the client's desktop?
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May 2, 2009
I was wondering if someone could tell me the best way to call a Visual Basic program from Java. I have a few VB applications that I want to run from a Java application that I'm building.
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Apr 23, 2009
How to lock the screen (most important), change the sound, lock the keyboard and etc using VB.NNET?
I know it's quite easy to do it using C++ .Net
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Jun 16, 2009
I have an existing program, and it uses DLL files to do things I wish to implement a DLL in VB.NET the DLL's are not COM, they are standard call the method or function type DLL's
How would I implement the following in a VB.NET DLL extern "C" void __Export_TYPE HelloWorld(char *path)
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Aug 1, 2009
I want to create a vb.net program to install a .exe package which requires selection. A user must choose a group name from the list . The list should have id number i.e. 1 to 100. Instead of copying the value name it should take the id number and insert into the below line in the Groupid part.[code...]
i have created the form and the listbox .I have played with Processstart to call that SSetup but i can't get it to work.
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Oct 12, 2009
I have written a small GUI based vb.net program that speaks to embedded devices via the com port. The GUI code contains a class which all communication to the embedded device is handled through (com port device, communication protocol, parsing info, holding device related info after each read).That class is called EDComms.
I wanted to add a thread so that the EDComms object could run in the background and report back as it downloads logs files and such (It can take a while to get log files from the device sometimes).So. Should I have EDComms inherit from backgroundworker thread? Or should I have a background worker thread as a member of EDComms?Right now I am going with the second choice. The only thing I have to do now is write a func for registering two delegates from the GUI for notifying task progress, and notifying task complete.Or is there a better choice than these two I have presented Perhaps have the thread as a member of the GUI?
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Aug 5, 2009
I am trying to convert a vb6 program based off of the coordinate system. VB.net does not seem to recognize any of it.
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Jan 9, 2012
How can I set focus on other application based on process name in VB2010?
What I can do now is set focus on other application based on windows name using FindWindow then use SetForegroundWindow. Below is what I currently have[code]...
The problem is that FindWindow need exact windows name to works and I don't always know the exact name. (Because my program open up different website that the user enter, so I have no control over they site they open). So is there anyway that I can set focus using the process name instead? (in this case firefox.exe)
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Oct 21, 2009
I build two programs, 1 - bootstrap and 1 - mainprogram
now, mainprogram has 2 constructors, the default and the one which i defined and it accepts an integer the default constructor checks the variable named iscalled a type of integer to have a value of 1 or zero, if its zero then it should shows a message saying "Improper initialization" then exits..
What I mean here is, mainprogram should only run if its called by the bootstrap program.
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Aug 18, 2011
I am struggling with this program which uses emgucv(an opencv wrapper for .net) for about 2 weeks. The problem is unfortunately not programming, but setting up emgucv in such a way that it works. I didn't manage to do so for vb.net so I tried doing it for ironpython(because I know python too). Emgucv seems to work perfectly when using ironpython, so I created a function that takes an image as an argument and analyses it in the way I want, returning another image with the results in it. The problem is I want to call this function, giving it the image argument(it could be a string containing the path) from within VB.net and become another string containing the result image as return. I later plan to package that project in a setup so I can redistribute it.
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Jul 2, 2011
I'm looking for a more elegant way to work around a problem I have
Code:
Private Sub MnuCheckForUpdates_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MnuCheckForUpdates.Click
Dim startInfo As New ProcessStartInfo(mStartUpPath & "" & "Updater.exe")
Process.Start(startInfo)
End Sub
As you can see I�m calling my updater program, but I want some code to run only after the Updater has closed.My work around was to:
A - Initially load the updater.
B � Start a time
C � Check if the updater is still running.
D � If its not call the routine in the timer event.
But this is not elegant is there another way around this, I can call events in the updater but I don�t think I can join them in someway to ProcessStartInfo Class .
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Jun 21, 2010
In one of my vb.net 2008 application i have called a java class file through batch process which creates txt file and jar file and put in app path folder.[code]...
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Apr 20, 2009
How would I call like notepad and tell it to write words in it? E.g. When I click on button1 it opens notepad.exe and writes "hello word" in it.
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May 8, 2012
I have java script in my page and i want to call it from vb.net code behind from function AND didn't want to call it (onload or onclick or any similar event) but i want to call it from function doing looping.so it will be run more one time
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