How To Call A Class From A Main Form
Mar 5, 2010How would you call a class from a main form? In VB6 you would call a module by just simply calling the module name.
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VS 2008 Can Call A Class From Main Form
Dec 14, 2011As of the moment I have 24 buttons that are keys to a piano.24 of the button codes have a call method that calls the note to be played.24 of the private subs that are called have an .wav audio playback command within them. I was hoping I could move the .wav private subs into a separate class, and just call them from my main form, therefore cleaning up the lines of code I have at the moment. [code]That example only counts for one Button "The Key of C", and the audio file that is called with it. Multiply that by 24 and you get a big mess of repetitive junk.Can I move the audio subs into a class and call them from my main form?
View 16 RepliesCall C# Form - Call The Form Called 'main'
Sep 22, 2010I have a VB .NET 2010 application. I added a C# project to my solution. I tried to call the form called 'main'. However, I could not figure out a way to do that. What is the best way to do that? I Goggled, and did not find anything. Actually I noticed that my Developer converted everything to VB .NET.
View 5 RepliesClass Not Registered While Loading Main Form
Apr 1, 2009We have a Dell laptop used to run an in-house VB.NET program. It got a virus. We had to wipe the hard drive and reinstall Windows from scratch. We use Windows XP Pro, which is what was installed on it before. But now our VB program won't run. After trying and despairing of getting remote debugging to work, I actually installed Visual Studio 2005 on the machine, just long enough to get information about what was making the program fail. And the failure was most peculiar. It isn't in our code. It's in the VB setup code that loads the main form. And it says, "Error loading form: class not registered."The gory details are given below. Now here's the strange thing. Not every VB.net program fails on this computer. And the program that fails, fails only on this computer; it has run successfully on several other Windows XP systems with .NET Framework 2.0 installed.[code]
View 3 RepliesAccessing Function In Alother Class From The Main Form?
Feb 12, 2011I have a new solution with 5 projects inside. a data access layer, database, 2 class libraries, and the main form. These are all components that I had worked on to get to this point of combining into 1 solution. Now what I have run into is I can not the actual functions in the class libraries. I can get to the class level, but that is it. ere is a sample line of code I need to get working. Once I get this one line, the rest will be obvious: Temperature is on the main form. get for options is "Equals, GetHashCode, GetType", etc... Before this I had bult, compiled, and referenced these classes separately, and it worked fine. I know this is going to be an easy answer, I'm just not seeing it for some reason.
View 15 RepliesHandle Events From The Main Form In A Separate Class Or Module?
Feb 24, 2012I've been searching for the answer for a while but can't find it yet. Basically so far I have a simple VB.Net form with one button.I would like to make a class or module that can handle events from the main form. This is my code so far but it doesn't seem to work.
View 6 RepliesVS 2005 Class Api Needs To Get A Handle On Form Elements In The Main Worker Thread
Sep 4, 2009I have a standard windows application called winap. I have a com component which acts as an api to the winap. I have a class in winap call classapi which has all the methods that the api calls and all works well. The problem is that one of the methods in my class api needs to get a handle on form elements in the main worker thread. Whenever I try to access an existing form I keep getting null because the for exists in the main worker thread and my api call is in a seperate thread.
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Class - Call A Method In The Default Instance Form Instead Of Instantiating Another?
Nov 15, 2009When an instantiated class calls a method in the parent form class, VB.NET starts a new instance of the form class instead of calling the method on to the active one.How do I tell it that I have just one instance of my form class, or that I don't want to create a new instance of the form and just call the method on the already active form?
View 2 RepliesVS 2008 Call Main Function From DLL?
Jan 18, 2010We know that the DLL function can be called from our mainprogram and return value. I would like to know, when we run DLL function, can we call a sub in our mainprogram (from DLL function) and return a value to DLL fucntion.
View 3 RepliesCall Other Files That Programmed To The Main Program?
Oct 8, 2010i want to know how can i call other files that i programmed to the main program?
View 1 RepliesCall To Application.Run(New MyForm()) Not Working When Called Outside Sub Main?
May 2, 2012I am using Compact Framework 3.5 on a Symbol MC50.In my Sub Main it first checks to see if a database exists. If it does, it shows a login screen using the following code:
Dim login As frmLogin = New frmLogin()
If login.ShowDialog() = DialogResult.OK Then
Application.Run(New frmMain())
End If
This all works correctly and, when I close frmMain, it exits the application as expected.However, if the database check in Sub Main fails, I call the ShowDialog() method of another form that is used to create and fill the database from a live server. Here is the code for calling this form:
If Not File.Exists(SETTINGS_LOCALDB) Then
databaseExists = False
MessageBox.Show("Local DB does not exist. The database must be created before using the application.")[code].....
All of this code is being hit and frmMain does indeed load. However, when I click the close button in the top right nothing happens, no event occurs. Its as though the Windows events are not occurring.
Call A Function In Module And Get Result In The Main Thread Asynchronously
Mar 2, 2011I have a function in a module that returns a datatable.I need to call that function asynchronously and get the results in the Main thread (Main Form) in vb.net.
View 2 RepliesClass Has Been Create By Main Class Only?
Feb 27, 2011I'm try to create a class has been create by main class only by protect sub New but how do I create it ?
Public MustInherit Class Rune
Protected MustOverride Function Create() As Rune
Public Shared Function Factory(Of T As Rune)() As T
'I can't use "T As {Rune, New}" because Sub New isn't Public
'Return (New T).Create
End Function
End Class
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Add / Implement An Interface To An Existing Class Without Changing Code Anywhere That Call The Class And Functions
Mar 1, 2010I need to create unit testing project for my current website. The currentw ebsite si written in VB. All unit testing examples are using interface to create mock object. My current VB class does not implment any interface. Can I add interface and implement it to my current class and functions without affecting or changing codes to any pages in my website that call the functions? For examples my current class is like:
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Call Method Base Class In Program Passing Sub Class Objects?
Apr 22, 2012Base class has one field to hold numeric balance value. With 2 methods that accept arguments for adding and subtracting the new input calculating new balance. Sub class has four fields dates, transaction, memo and amount.I have a deposit form, and withdraw form. Each time one transaction is entered it creates an object with sub class fields, then adds to the account collection. My problem is not understanding how to call the deposit/withdraw method and pass the current transaction amount back to the base class to alculate the new balance. Does anyone have any links to information/tutorials on how to perform something like this? As you can see with my code I have tried various different approaches without any success.
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Call Functions Within A Class Upon Instantiation Of That Same Class?
Mar 23, 2012Is there a way to call functions within a class upon instantiation of that same class? Basically, I have functions within a class, but I want to automatically call some of those functions simply when there is an instance of the class created.
Basically, I have this structure:
Dim instance as new class
instance.function1
instance.function2
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How To Refer To Main Window Class
Sep 6, 2011I created a modal dialog as a WPF window that changes some settings in the main window application. How can I refer to a member of the main window?
View 2 RepliesMain Difference Between A Class And A Type And A ValueType
Dec 17, 2009what's the main difference between a Class and a Type and a ValueType.and is a Delegate a Type? or an eventhandler/event (the actual event itself)is every object a type? or is it only true in VB
View 3 RepliesSet And Get A Value From A Class Property Within The Main Event Of A Module?
Jul 8, 2011the project uses a submain as startup object which is located in a module, thy so the application will be started in tray. Within the main() event i need to deserialize a xml file and with it set the properties of a class and then set what the application will do.The problem is, after I deserialize it and put set the property values I try to get them in the same event(main) but when it gets the value it returns as nothing(if string) or 0(if integer) but in the debugging i saw it setting the values.Is there a way to do that, within the main() event of a module to set the properties of a class and then get them without being nothing/0 ?
View 6 RepliesUse The Update In The Main Class To Access The List?
Jan 15, 2012i need to use the update in the main class to access the list in the footballadmin and then display each in a list box but i cant get it to work.
Imports Football
Public Class FootballAdmin
Private fTeam As List(Of FootballTeams)
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Winforms - Serialize The Main Class In My VB Solution?
Apr 5, 2011I'm trying to serialize the main class in my VB solution. I've added the Serializable attribute at the top of my class like so:
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I'm guessing this is because you can't serialize the form that is attached to the class or something, but I really don't know what I'm doing. Can I serialize all of the objects contained in my Form1 class somehow, without getting this error? I don't want to store any data about the form controls, I just need to save all the objects that I've defined at the top of the Form1 class.
Mdi Child Form Order - Move The New Form Behind The Main Form While It Loads
Aug 5, 2010i have my main child form open. then i show the new form:
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but when the form opens it flickers a lot. so i want move the new form behind the main form while it loads so the user does not see the flicker. once it is done loading i will set the form to topmost. how do i move the new form behind the main form?
Create A Sub Main Inside A Class Which Is Itself Part Of A Project
May 17, 2009why, when i create a sub main inside a class which is itself part of a project, i need to create it as a shared sub like this.[code]
View 2 RepliesDeclare Main Class On FrmMain - Working With Classes?
Jun 3, 2009Currently I declare my main class on frmMain. as public MyClass as new clsMyClass Thus anywhere in the application I would address it as: frmMain.MyClass.Function(MyParam) This does not look as neat as I would like it. Where can I load this Class so that I can address it as: MyClass.Function(MyParam) from anywhere inside the application.
View 6 RepliesDefine A Main Method In A Class Versus A Module?
Jul 12, 2011I was just practicing some coding and noticed that I was able to use class instead of Module in VB .NET. So I replaced my module to class and I got this error message:No accessible 'Main' method with an appropriate signature was found in 'practicevb'.practicevb
I made sure that the startup object was set correctly in Properties > Application > Startup Objects.The error message disappears if I change it back to Module but I would like to keep it class since the other parts of my code I changed to class and didn't return and error messages.
Class Atic
Sub Main()
Console.WriteLine("Hello, this proram will calcaulate the quadratic forumla ax^2 + bx + c")
Dim Quads As New Quads
[code]....
Ensure Instances Of Class Finish Before Main Terminates?
Feb 14, 2012I have a MultiThreading issue and conceptual question using Visual Basic (but it applies to almost all languages). [code]...
View 2 RepliesForms :: Set And Get A Value From A Class Property Within The Main Event Of A Module?
Jul 8, 2011the project uses a submain as startup object which is located in a module, thy so the application will be started in tray. Within the main() event i need to deserialize a xml file and with it set the properties of a class and then set what the application will do.The problem is, after I deserialize it and put set the property values I try to get them in the same event(main) but when it gets the value it returns as nothing(if string) or 0(if integer) but in the debugging i saw it setting the values. Is there a way to do that, within the main() event of a module to set the properties of a class and then get them without being nothing/0 ?
View 3 RepliesVS 2008 - Make A Class Link Into Main Code
Feb 7, 2012I'm just wondering, how do i make a class link into my main code, it is in the same project so no need to reference it
Ive set up the the class and typed
code:
But they aren't linking/ working.
VS 2008 - Sub Main In Module Versus Shared Class
Feb 17, 2010In VB6 I always wrote my apps using Sub Main as the starting point. I see in .NET I'm able to wrap it in a shared class (see [URL] for example). However, the downside is that I can't declare any class-level variables, because of course the class is never instantiated. Being shared, it limits what the code can do. So, any benefit to use a shared class and shared sub main which I'm missing here.
Otherwise it seems using a module (as in VB6) provides a lot more flexibility. Of course, I should also ask if "Application Framework" is really the way to go for real-world apps, or if it's only there for beginners and real-world coders turn it off and use Sub Main instead? If so, how are the events "UnhandledException" and "NetworkAvailabilityChanged" done if App Framework is turned off?
VS 2008 Class & DLL's - Create Scripts On Their Own And Allow Them To Interact With Main Sub
Dec 12, 2011I want to start building my first large program. I want to create scripts on their own and allow them to interact with my main sub. I guess if I need a "plane" in my application, that could become it's own class? If I wanted to calculate "purchases", "money" I could create a DLL? I don't want to have to change things and have to recompile my entire application every time I want to change how something works for example.
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