I am fresher in vb.net but I need some samples on structure which contains fields,method,property and events and if some one help me regarding private,freind, protected freind type class etc. In addition to that I know how to create class and modules but i don't know where I create structure and how etc.
View 1 RepliesYesterday I opened Visual Studio (2008 v 9.0.30729.1) and all the winform classes in my project display with class module icons with the little 'VB', instead of form module icons with the little form icon!
When I double click on a form module, the form designer doesn't open, just the code module.
When I run the project, it runs fine. There are no errors. The project builds fine.
I did Project --> show all files, and I can see the designer and resx files below the form module which doesn't look or act like a form module.
I can't open my forms to design them!
I have created a class (pasted below in case I did something wrong) for which I want to create an instance that is usable across forms/modules. I can create an instance of the class in a single form/module no problem via DIM User as New User but how do I go about create a public instance accessible from all parts of my program?
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My VB project is large enough that it requires several files. It was originally developed as a Console App and I created each file as a MODULE. All modules could use subroutines, data structures and constants from other MODULES and everything worked fine. I needed to add basic windowing to the app and this required that the app be converted from a Console App to a Windows Forms App. The main window is Form1 which is not a MODULE but a CLASS. The problem is that some MODULE based functions cannot access subroutines, data and constants that are defined within the CLASS Form1 unless they are incorporated into the CLASS file and this makes the CLASS file very large. If I add a new Class file to the project, it also cannot interoperate with Class Form1 in the same way that multi-MODULE code interoperates.
How does one spread CLASS code across several files and still allow it to interoperate as if it were in a single file? Alternatively, how does one create several CLASS files that operate the way multiple MODULE files operate.I am sure that there are all kinds of best practices that I am violating but the goal to to get some prototype software working and interfaced to some lab equipment.
I am trying to create an application that can have "modules" added to it. For example firefox can have firebug installed into it. I am trying to figure out how I can write my code so that other developers can put their controls where they want to and my program will know to use them. I am assuming that this is called making a framework.
View 29 RepliesIf it is possible, I want to create a file (sort of module) which my MDI-Form can import and see it as a child and adds the name of the child in the menu of the Parent
View 12 RepliesI've been creating short test apps repeatedly to try to understand some of the concepts in VB.NET.For the most part it has been illuminating.I read Bucky's .NET knowlegebase tutorial on passing objects as parameters to newly created forms. He shows how to create a new class that inherits from the base form class and define a New() method with parameters Extending the concept I thought about doing the same thing with a form that was created at design-time (In this case Form2).
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I want to read a number of items from a file and then associate each of those items with a new button at run-time, so that when the user clicks one of the buttons I can display some information about that item.Can I use a LIST to manage these buttons and items? Can I create a new class and have each list item of that class, such as 'btnID', 'btnText', etc... ?
View 2 RepliesCan we create objects of a C# class from a VB.NET class and vice versa?
View 2 RepliesI want to create a class that will "search" for something. Basically I load up the "search item" when the class is created and inside the class is logic to do the "search". The result of this logic will be more "searches" that I want to start. How can I have the logic in the class create another instance of the class itself?
View 3 RepliesI want to create a class is it where I can do...
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How do I do this? Do i create a class and create a instance of CarData? but how do I add Color and Year etc to it?
I'm in the process of trying to create a class that will allow me to create windows shortcut; Im using the following PDF file that gives me the shortcut file structure.
Ive been able to successfully load a shortcut file and parse its Lnk File Structure but now Im on the Shell Item ID List structure but I cannot find the Structure of the ITEMIDLIST anywhere
Furthermore I know I could use the Windows script object, but this is a dependency Im trying to avoid if I can, hence writing my own Shortcut class.
I'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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I want to create a custom class that has inside an array of another custom class (see my code below) but when the programm runs is crashes. Why? What is the right expression???? Plz help I'm a newbie in VB.net.....
Public Class ctrarray
Public nameclass As String
Public ctrlindex(glvar_spaces) As ctrlindexclass
End Class
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using bas files in visual basic 6 because I could write functions or subs that I would just easily use over and over rather than keep rewriting code. Do these work in the same way in .net? If anyone has any good info on modules like how to start writing functions and subs. Assuming of course that they work like vb6 bas files. If I were to make this sub a function how would I do this and I am assuming the benefit of this specific example would be a Boolean to check if if saved the text file or not?
Code:
Public Sub SaveList(ByVal List As ListBox, ByVal filename As String)
Dim i As Integer
Dim w As IO.StreamWriter
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During the design of a new application I was wondering if using a module with properties is considered to be a bad practice. Some example code:
Module modSettings
public property Setting1 as string
public property DatabaseObject as IDatabaseObject
End Module
The code above is just an example to emphasize my question. In the past, this structure was used a lot in VB6. In the past I used it as well in my .NET projects.
But nowadays with buzzwords like Dependency Injection, Testability and Separation of Concerns the above structure smells bad. I can't really describe why, but it just feels wrong. I must admit I'm not very familiar with the keywords above, yet.So I'm wondering whether the above code really is a bad practice. If so, what would you use a Module for?
What advantage is there, if any, to using Modules rather than classes in VB? How do they differ, and what advantages/disadvantages are there in using modules? In VB or VB.NET, I use both.
View 3 RepliesI created a module named Sample, in it i made a Public Sub called Sub. But how do i do to add something "behind sub", so i can write like this:
Sample.Sub.alternative1
Sample.Sub.alternative2
etc.
I have finished creating the code for my client/server application although both parts currently execute modules/in console(this was for testing purposes).I am now looking at making both parts of the program completely invisible (they will eventually be executed as a Windows service upon startup). How do i go about this? Does the code need to be copied in to a "Windows Service" project, or is there a way I can hide both of the modules upon execution?
View 5 RepliesI'm using Visual Studio 2010 and coding in VB.NET.
My problem is that I've collected all the modules I've written and intend to reuse and placed them in a separate folder. When I want to add a module from the above folder to any given project, it takes a copy of the module and places in the project's source code folder, instead of referencing the module in the folder containing all the other modules.
Is it possible to include a module in my project and leave it in the folder with all the other modules, so that when I improve upon a module, it'll affect all the projects that uses/references that module. Instead of me having to manually copy the new module to all the projects that uses/references the module. Right now I have multiple instances of the exact same module that i need to update manually when I improve code or add functionality?
Im writing a application in visual basic to tell the user about their pc.
All this is in a module
Imports Microsoft.VisualBasic.Devices
Imports System.Management
Imports System.Net
Imports System.IO
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The problem I am having is that if one of the things in the module fails such as if the users graphics card does not have any onboard memory then it will fail.This is causing everything else to fail aswell.I am very new to visual basic so ifyou could please excuse me if I have made any stupidly obvious errors and any suggestions are welcome
I have been brought onto a project where a large amount of code has been written. Most of the code is appearing in the MainWindow.xaml.vb file (yes, this is a wpf project but I think the question is appropriate for this forum). The folks who developed the previous versions in Visual Basic 6 told me that they organized their code by using Modules. I was not aware of this practice and I have actually never even used modules. Can I use modules in this way so that I can logically group different areas of functionality within the application? Or is there a more preferred method?
View 2 RepliesI have read many many forums regarding the error message "No symbols have been loaded. The breakpoint will not be hit." I had this error message come up a while ago, so I opened a previous version of my project, and copied the newest version of the code I am working on into that project. Then when I debugged, everything worked fine...for a while. Then I got the error message back, so I did the same thing again, and who would have guessed the error message returned, out of the blue. I am working on the program and it works fine, then suddenly one time when I try to debug with a breakpoint I get that message again. So I did some more research and I found a post that recommended looking at the Modules window while debugging (under debug > windows > modules). And in this window under my project, it said "Cannot find or open the PDB file". However, I compared this to the previous version of the program, that works fine, and I noticed that under Path, for my project, the path that I see is not the path where my project is located. So what I am asking is can someone please tell me how to change that path to the correct path where my files are actually located? I believe that if the path is correct, it will find and load the symbols.
View 1 RepliesI have learned that if I want my crystal reports to work on the client machines when they install my program, I have to include some merge modules. I have VB .Net 2003 and Crystal Reports 10. The merge modules that are included with VS Studio .Net 2003 are not included in the program software I have. Is it possible to download these merge modules somewhere else and use them with my software? If so, can someone give me a link on where to get them?
View 16 RepliesI'm finishing up a remote inventory service. Getting the total memory is simple. But, is there any way to detect how many memory modules a computer has and how many MB/GB each is?
View 2 RepliesI have a Module in VB.NET called Math.vb and in that module, I created a Function that displays returns the percentage of one number to another. I have a Sub that calls the Function and I call the Sub from my Form1 class. Is there an advantage/disadvantage to putting the function in the class or the module?
View 5 RepliesI have 2 modules. Each contains a Sub with the same name. See below:
Module moduleA
Public Sub f(ByVal arg1 As myType)
Console.WriteLine("module A")
End Sub
End Module
Module moduleB
Public Sub f(ByVal arg1 As myType, ByVal arg2 As Boolean)
Console.WriteLine("module B")
End Sub
End Module
But the compiler complains that there's ambiguity between moduleA and moduleB. I have totally different signatures. However, if I put the 2 methods into the same module, there's no ambiguity at all.
I have a big project in vb.net with over a 400 forms and datasets and 100 reports. I deploy it using clickatonce. I want to split it into modules so each user will use the core project plus the modules his department needs, so when I make an update to a module he will take only this update and not the whole project as I am doing now.
View 3 RepliesI am doing a VB.NET course, there is a question in one of my assignments - "How many modules can you have in one program?" This seems like something that should be easy to find, but I have not been able to find it anywhere.Can anyone direct me to a resource that would have this? My initial thought is unlimited, although in practical terms, if you have an excess number of modules, then you probably need to re-think your workflows.
View 3 Repliesi have a public module un an application1 , how can i get the module in application2 ?
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