VB.NET has classes and Modules, so my first question is what is the difference? Also, I noticed that C# does not have modules, but just classes, is there something in place of modules or were they removed for C#?
View 1 RepliesDuring 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?
You need to test for the backspace character, and if it's there, fix up the input.Maybe something like this:
If Right$(TxtQP.Text, 1) = vbBs Then
TxtQP = Left$(TxtQP, len(TxtQP)-1)
End If
Or is the backspace not showing up in the string, but as the input character kicking off your procedure?
I use to use Structures quite a lot in the VB6 days, and try to avoid them now with .NET. Just wondering if using structures in 2010 instead of a Class is considered nasty?
View 6 Replieswhich one cannot be considered as a counter variable?
counter = counter +1
counter = counter -1
counter = counter +3
counter = counter *2
I'm just wondering why using GoTo<label> is so frowned upon?I'm learning VB, and I want to develop good habits as I go. One thing I don't entirely understand, is why everyone avoids GoTo like its the plague (except in error handling...). I feel like GoTo could be useful in some situations.
View 1 RepliesWhy after you pressed the button Button1, this application crashes without considering the event timer1??
Public Class Form1
Public timer_event As Boolean
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
timer_event = False
Timer1.Interval = 3000 '3 sec
[Code] .....
When was isnumeric considered legacy code? I guess all that i have learned from my college class last semister is legacy.
View 4 RepliesEver since I started using VB.Net I have been using the Generic List collection List(Of <Type>). Arrays, I haven't used so much. I used them a lot more when I wrote C code years ago.
1.) Are arrays considered a type of collection like Lists, Dictionary, Queue etc are? Or are they in their own category.
2.) Can I iterate over an array with a For Each loop like I can with other collections or do I stick with the normal For loop for arrays?
3.) There are certain methods that return arrays. Can I set a list object to hold this return value instead of an array?
how we can declare a connectionstring in a module and call that module
View 1 RepliesI have a VB.Net interface that communicates with an Access 2k3 Database using this module:
Module MOD_ENGINE
'Declare Database connections controls
Dim con As New OleDb.OleDbConnection
Dim dbProvider, dbSource As String
[code]....
I want to call EngineConnect procedure from MOD_ENGINE module into popCboBox module so I can ignate the engine!
I would like to know how to use module, why we need to use module and when to use module. I've tried to use module but some of my textboxes, labels and other controls didn't recognize by the module i've created.
View 5 RepliesHow do I use a module?
View 3 RepliesI need to use some feature of VB.net that is Module for my Asp.net MVC project. But I found that C# can't handle Module like VB.net does. VB.Net - Globalization Project
[Code]...
Some of my co-workers make extensive use of the VB.net concept of Modules. Unfortunately, I just don't 'get it'. I see no benefit in using modules over shared classes. When would it be preferable to use a module?
View 2 RepliesI have a connection module in which I have written the open and close database connection.... if database connection is an error it will return false else if success it will return true the function of the modules will be called from the form code....
what I need is if the connection is an error the module should also get the form name which returned the error...is it possible???
check my below code....
DBConnection.module
Imports System.Data.SqlClient
Module DBConnection
[Code].....
now what I need is if the functions Open_DB_Connection() or Close_DB_Connection() returns error it should prompt the form name....
I want the current module name for Verbose Logging. Tried using DeclaringType.Name and it returned the Class name, not the Subroutine name. Ideally, I would like the class/module and subroutine/function name.
View 11 RepliesHow do i create a new module like the one i was told to create in [URL]? If you don't know, how do i create a Global Variable?
View 4 RepliesMy applicaiton has several forms with textboxes. I need to make Save settings button and Load settings button. I have module that stores a lot of variables. Saving these variables was easy. Now i want to load these settings. In each form_load event is written code, which fill textboxes with variables from module file, also some forms create databases which are defined in module file..
View 2 RepliesThe module containts of a bunch of string properties like: [code]how do you acces this module in your view ? If Page.User.IsInRole("Beheer diensten") Then..The goal is to prevent typo's all around the application and if someone for some unknown reason wants to change the description of a role we don't have to check every if.
View 1 RepliesI am using the under given code in a module and I am getting an error ['Me' is not valid within a Module]
[code]...
What is the meaning of having constructors (sub New) in a module, and why must they have no arguments?
View 4 RepliesI have a "Main" module that is sort of the "brain" or "top level" of my project. Basically, I think there are routines that it only should be allowed to call. Some of these routines are in other modules, so I don't know how to make them hidden to everything except the Main module. If the routine is ublic, anything can call it; if it is private then the Main module can't see it. Also the other modules are big enough that I don't feel it would be a good idea to stuff them completely inside my main module. How can I achieve this "private except in one place" functionality?
View 2 RepliesI Have this dll OBIDISC4NET.dll i added it to the reference
Imports OBID
class reads
Public Sub run()
Dim back As Int32
Dim fedm As New FedmIscReader
when i run the program and call the run function im getting error "The specified module could not be found. (Exception from HRESULT: 0x8007007E)"
it only happens when i put "new" without it im not getting any errors it looks like it generates error when i create the instance.
I have a login menu when the user has entered the correct password and username. I assigned Username = txtusername.text. I created a module call general which I stored the value for later use. However my problem is I found that my program would crash every time it tried to pass the value from the username text box into variable username when being deployed on windows vista or windows 7 but have no problem at all running on windows xp. When I removed passing the value from Username = txtusername.text there was no crash.
View 2 RepliesUse a DLL rather than a module so that if I updated the DLL it would propagate over all the projects that used it. I want to create a library of functions and subroutines that may be used in many projects (such as my gradient and some error messages).
View 8 Replieshow can i use BackgroundWorker in a module
View 9 RepliesI'm trying to declare a array that I want to use in the module and in the forms. I like it to be usable all over but I cant get it to work.I tried this code but when I want to use it in the module it says that it isn't declared.
Code:Public Class Form1 Public ShuffleArray() As String Anyone know what I should do to make it work?
I want to use the python module imaplib, email in vb.net to read the gmail email with attachments. How can i use the python module in vb.net?
View 2 RepliesI use an already developed module in VB.NET with ASP.NET to use in a web-based application? The goal is to use the speech technology without having to use another language syntax. I have a windows application that manages a local server database, but how if I want to exchange information from my local database over the internet? I am new to web services (Just developed windows applications).
View 4 Replies