What is the advantage on creating ur own class and property??when making a system like POS. . . .it is necessary to create a class or property??It is possible that I will create a module and i will declare the import statemnt in the module and i will declare ol of the mysql commnds in the module and I will open the connection in the module so that ol of my forms can see my declaration?
View 2 RepliesI have the following class:
Class MyClass
Property MyInteger as Integer
Set(ByVal value as Integer)
_MyInteger = value
[code]....
As I'm not using any validation etc in my Property, is there any advantage of using a Property in this case, or would it be neater to use:
Class MyClass
Public MyInteger as Integer
End Class
I need to create a namespace for my database class file, so I can call the database procedures within my webservice module. How can I create a namespace to call that Db class file?
View 1 RepliesI've createda vb.net class library where I've defined a number of small classes... nothing complicated, just working with strings, sending emails, etc.In another project, I reference the class library and I'm seemingly able to create an instance ofone of tclasses - intellisense shows me all of the plic properties, methods, etc... all looks perfect. No compile errors at all, nothing b gumdropsand lollipops.When I run the app I'm working on that references the class library, it fails at the point where I'm creating an instance of the class and gives me a vague exception, "System.TypeLoadException".
View 2 Repliesim considering to study properly 1 of these two languages because in vb.net the limitations ive encountered were not very significant, and C# because i hear all ppl shouting at how vb express is for newbs and how C# is the way to go..What i would like to ask is, what is exactly the main advantage of C# over VB Express because what ive read from wikipedia, the only difference is the language, while C# might have 1 thing or 2 extra to vb express and vice versa...[URL]..So, could anyone clear me up please? i would really like to know if vb express is really worse than C# or the differences are only in syntaxes.
I personally used to hate VB Express at the begining but now im fastly changing my mind so im more inclined to this language, but i dont wanna wake up in 3 years realising ive been wasting so much time in a language that isnt as good as "the competition", get it?
I have a litlle idea about for the sql parameter. I need other explanation why using sql parameter and what are the Problem not using sql parameter.
View 10 RepliesWell how can I do this? So my app is faster?
View 5 RepliesWhat is the advantage of using USING keyword in vb.net??im new with the USING and it seems that most people are using this.
View 5 RepliesIn this post Jon Skeet pointed out that the following code should be changed to conform with the .NET naming conventions. Doing that would also decrease the amount of noise in the code.
[Code]...
I must admit, I was pretty much like a sheep and was following what others have done before me. I thought the prefix did not look right and then to have it twice did not make sense either. After looking at a couple of .NET Framework examples, it looks like this would be closer to the standard.
[Code]...
What's the advantage of declaring a function as "Shared"? I've noticed that it doesn't require you to instantiate an object to use the method when it declared as "Shared". Is that the only upside?
View 3 RepliesThese two snippets do the same thing - is there one that's better than the other, or is it just a matter of preference?
Using context As MyDatabaseDataContext = New MyDatabaseDataContext()
Dim test = context.Employees.Count
End Using
vs.
Dim context As MyDatabaseDataContext = New MyDatabaseDataContext()
Dim test = context.Employees.Count
I have a VB.NET web app that is about 2000 lines of code, contains about 20 different subroutines, and about 50 different functions.Is there an easy way to "rewrite" this to take advantage of classes and objects?
View 5 RepliesI know that an interface can contain another interface within it.But;can a class contain another class within it?Can an interface contain another interface within it?
View 9 RepliesI am attempting to use the System.Management.ManagementObjectSearcher class in VS 2005 (see below) but get a error message for both the ManagementObjectSearcher class and queryObj As ManagementObject - Type ManagementObjectfSearcher is not defined and Type ManagementObject is not defined. how do I use this class in Visual Studio 2005?
Dim searcher As New System.Management.ManagementObjectSearcher( _
"rootCIMV2", _
"SELECT * FROM Win32_ComputerSystemProduct")
[code]....
I have a project where I need to create an exe that will execute through a scheduler every five minutes The visual basic file will call a SQL Stored procedure, get values and then write these values to a separate database system (that is NOT SQL).
View 4 RepliesI was wondering if there is any advantage to do everything programmatically instead of using design view to create forms, controls etc. Would there be any difference in size and/or performance after you compile it? So far I've been doing pretty much everything programmatically, specifying all the properties that aren't default for my forms controls but I am starting to wonder is there are any advantages to this, apart from making it easier (sometime) to manage and change the behavior of my controls.
View 10 RepliesIs it possible to create web games in VB 2005? If so, how does the process work?
I'm also looking for a tutorial to assist me in creating a tic-tac-toe game for my web site.
how to create a class yet, and I think I need to learn how.I am wanting to shorten my code in a form, thinking of creating several classes to do so.Lets use a Listview as a reference if you dont mind.Say there is a listview, you have a numeral amount of if statments to fill by. Is there a way to create a class(is this the way to go) so that you can open the class to modify that specific block of code? Example of questionYou have multiple items you need to add for each if statement. Animal as a group Dog as an item 14 years as a sub item Cat as an item 11 years as a sub itemIs this the way to go, if so how do you create a class and call it from a form?Davids Learning
View 4 Repliesmy query is:
file: read.vb
Friend Function Nav()
Dim NavBox As New ComboBox()
NavBox.Size = New System.Drawing.Size(44, 21)
[code]....
Now what i need is, a access to its control so i can parss value from mainFrom.vb to read.vb to manipulation the SelectionChangeCommitted activity.
I have a one form with code that has lots of subs and was wondering if i can shift some of these subs to a class or module to make the main form coding less clutered.
View 4 RepliesI'm working on the code I used to make the animated dice program in my sig. I've done a bit of modding on it so I can re-use parts and it still worked fine, until I tried to put everything in a class so that I could just create new instances of a certain die.
I was heading towards the idea of creating a new instance of the die by a number in a textbox on the main form. Right now I am just working on the basic d6 just to get it up and running.
QuoteAn error occurred creating the form. See Exception.InnerException for details. The error is: The form referred to itself during construction from a default instance, which led to infinite recursion. Within the Form's constructor refer to the form using 'Me.'
I am probably going about this the wrong way all together and could use some help because I can't see how the class is referring to itself at all.
[code...]
doesn't look much better in the original program, but it actually works in that so if it helps just click the link in my sig to go to the post with the original download.
Since I am going to want all the various dice to Rotate() and Move(), I am wanting these to be generic so that I can use them no matter which die is trying to access it which is why I have tried putting them separately in their own subs and just passing the picture ByVal. I'm not sure if, or how, to put these in classes of their own or not.
And I have looked at just about every dice roller and Yahtzee example I can find, but none of them actually try to rotate the dice like I have, and they pretty much just calculate by using simple random values...which is okay, but does squat when the values are actual objects instead of numbers (if that makes sense).
Nothing I can find tries to put this stuff in classes, which makes it even harder to determine what really should go in the class files themselves. I really just can't find an example that I have been able to get to work for my purpose, nor figure this out on my own.
I would like to know how I can get the list of possible choices to Intellisense for my class object, like it does with MsgBox.For example, when creating a message box you type MsgBox "Test Message Text", vbYesNo, "Test Message Title".In typing that, when you type the comma just before the vbYesNo, it gives you the possible selections for button types in a drop down list: i.e., vbYesNo, vbOKOnly, etc.I have a class called clsKeyState. what it does is turn on/off/toggle key states, such as CAPS LOCK, SCROLL LOCK, NUM LOCK, etc... I have set my property for it as Get/Let "State". When I call it to set a key to on/off I will be doing it like this: KeyState.State WhichKey, On/Off/Toggle.I would like the WhichKey part to automatically display all the possible selections that I define, such as CapsLock, NumLock, Scroll Lock; and I want the On/Off/Toggle to display those specific items also (On, Off, Toggle). I will be using the ability to create these displayable options for many more things in my project than just this one simple class.
View 3 RepliesHow can I create an array of a class that I have declared? I have this class named partswith properties of frame, engine and date, and i want to know how could I store them in an array .
View 1 RepliesI have an application in VB.Net and now I find out an API is not compatible and requires VB6. I am trying to convert it back to VB6 and have an issue in a Class Module. In VB.Net, I have:
[Code]...
I am making a class that will behave like a collection class. I want to prevent the end-user from creating a new class of this. For example, the following should give error:
[Code]...
Below is the class with a property.
public class abc
{
public int MyProperty { get; private set; }
}
What's the benefit of typing private access modifier in setter ?
my aim is to create a new instance box at the push of a button, the box has strings name and Id to be filled concatenating the auto generated ID i.e. 0 to 210 plus a string "Box" added by the user. I had problems earlier creating a structure within the class box, frankly I am not sure if the code below will work, as i try to run it in VB I get an error indicating that I am using the variables strBoxPositions() and strBoxNumbers() without assigning a value to it. The thing is the strBoxPositions() should automatically be filled by arrPosition() which will be created at the same time the new object box is created and the strNumbers() will be created with empty strings to be filled at latter stage by the used as and when necessary.
how could I initialise those arrays to get the program to run and perhaps ill be able to see if the code works or not, or just correct this code with a better way of code with comments, also if possible some indication on how could I update the strNumbers array inputing the strings one at a time on a text box field.
Public class form1
Public Class Box
Public intBoxID As Integer
[Code].....
how do I create a geometric shape as a class? Visual basic has a Rectangle class pre-defined object that I would like to use, but I need to use a rectangle class that can use decimals for the 4 points to set its location. I do not want to draw a shape on the form for graphical reasons but I want to use the shape for an algorithm, how can I create a class for a rectangle using decimals?
View 1 RepliesI'm wondering on how you would go abouts instantiating a class that contains other complex objects. for example an Payment Class which has Date,Time, etc.. and it also holds a reference to a paymethod object which has id,Type,Description etc.. How do you instantiate the payment class with all the other objects without one or the other failing, how do you create the payment class which doesn
View 4 RepliesI would like to create a partial class for my form. I have a lot of events, and it gets messy, so I would like to break up sections into their own files. The problem: When I create a partial class of my form, say:
Partial Public Class Form1
End Class
Visual Studio decides I need another form for this partial class.
1. How do I create a partial class for a form?
2. If I cant do that, how can I break up all the events in my form into different files?