Define And Declare In Class Module?
May 25, 2011below is my code to use binarywriter it work fine on class form1 level
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Define 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
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Declare A Connectionstring In A Module And Call That Module
Aug 16, 2010how we can declare a connectionstring in a module and call that module
View 1 RepliesDeclare And Define An Object Dynamically?
Apr 19, 2009I have the following situation, can anybody help me in that?Following is a "pseudo" code of what I want to do in VB using VB.NET 2005:
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Ways To Declare/define Variables?
Feb 12, 2010This is a VB.Net newbie question. I'm confused at the different ways to declare and define variables.Here's an example:
Dim URL As String = http://www.c-sharpcorner.com/default.asp
Dim request As HttpWebRequest = WebRequest.Create(URL)
Dim response As HttpWebResponse = request.GetResponse()
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Define Control Within A Tab Page From A Module?
Dec 1, 2009i am currently building a MDI application. Both my Add and Edit screen use a form called frmStaffDetails.
On load, this form is redefined as 'AddStaffChild' and 'EditStaffChild' dependant on which menu item is selected. I've defined the CurrentForm as Form.ActiveForm.ActiveMdiChild.
Within a module I am checking the text within certain textboxes. So for example here I am checking a name has been inputted. If it has, then I will allow the record to be saved.
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The problem I am having is that this code works perfectly if the textbox control is not within a Tab Control. As soon as I put it in a tab page I get the error.
"Referenced object item has a value of Nothing" Also if I reference it directly for example
If Not AddStaffChildForm.txtFirstName.Text this works fine too, but i want it to be more genric so I can use it for my edit screen as well. How can I define a control within a Tab Control from a module (or any other way to declare a public sub).
Create A New Class That Inherits From The Base Form Class And Define A New() Method With Parameters?
Oct 1, 2008I'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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Declare Database Connection In Module?
Jun 6, 2011What I am used to declaring database connection is that in every form I type the codes for it which is a tiring way. Now, I want to use module instead but I really don't know how. And also, how will I call the connection to every forms I created?
View 4 RepliesNET - Declare A Module Member Accessible Only To A Namespace?
Nov 2, 2009I'd like to declare some members of a module accessible to an entire namespace, but have them not be accessible from without. Is this possible?
View 4 RepliesVS 2008 Declare The Variable Along With All Declarations In A Module?
Feb 4, 2012I have an issue with variables that are used to name For-Next loops. I have had this problem in a couple programs but not consistently, i.e. some variables work, some throw a warning (not an error).
The situation is this. I declare the variable along with all my declarations in a module-
Module MainModule
Public Counter1 As Integer
end Module 'MainModule
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The type for variable 'Counter1' will not be inferred because it is bound to a field in an enclosing scope. Either change the name of 'Counter1', or use the fully qualified name (for example, 'Me.Counter1' or 'MyBase.Counter1'). In the past I've always broken down and changed the names to get rid of all those ugly warnings. Sometimes I have eliminated them from being declared in the module and declared them at call time. This is not how I program and I like to keep consistency throughout.
how I can get rid of this spotty, on-and-off nonsense? There is obviously a lot I don't understand about VS and I would have never taken it up but would have stopped 3 languages ago if I weren't forced into bulkier and bulkier languages (sorry about the rant. I feel OK now).
Define A Class Such That There Can Be Only A Single Instance Of That Class?
Jan 20, 2012Is there a way to define a class such that there can be only a single instance of that class?
View 5 RepliesDeclare Two Module Level String Variables Name StrCaptital And StrChoice
May 16, 2011What I'm supposed to do is declare two module level String variables name strCaptital and strChoice and I did that. At least I think I put them in the right place, however what I'm not sure what to do is and I started is that I'm supposed to code each state radio button's click event procedures so that each assigns the appropriate capital to the strCapital variable and then each removes the contents of the lblMsg control.url...
View 3 RepliesDefine Font In Printdocument After Declare "Imports Microsoft.Office.Interop.Excel"?
May 12, 2012Imports Microsoft.Office.Interop.Excel
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Inside The Service Class, Declare A Class Variable Named Started?
May 8, 2012Create a class named Service. Inside the Service class, declare a class variable named Started. The datatype of this variable is Boolean.Public Class Service Dim started as Boolean End Class Create a class named Server. Inside the Server class, declare a dynamic array that can contain elements of the type Service.(Note: For convenience, both the array and the variable Started can be accessible from a client program that creates an instance of Server and Service respectively)
Create a constructor for the Service class. When the constructor is executed, it will set the value of the class variable Started to True. Create two new classes: WebServer and DatabaseEngine. Both of these classes inherit from the class Service. Inside the Service class, declare a Sub procedure (method) named Terminate. This method should display the following text Service stopping in a message box when executed.This method can be overridden in classes that inherit from Service class.
Inside both the WebServer and DatabaseEngine class, override the method Terminate inherited from their base class Service. Both methods should first call the base class Terminate method. The messages Web server stopping and Database engine stopping should also be displayed in a message box when the Terminate method for the WebServer and DatabaseEngine are called respectively. These messages should only be displayed if the Started variable inherited from their base class is not equal to False.
Inside the Server class, declare a method named Shutdown. This method does not return any value. When executed, it will call the Terminate method for each of the Service instances (if any) in the arrServices
array. You should call the Terminate method within a For Each loop that loops through the elements of the arrServices array.
In the Sub Main method, create an instance of the class Server. Set the size of the arrServices array in
your Server instance to contain 2 elements. Create first a WebServer instance and then a DatabaseEngine
instance into this array. Call the Shutdown method from your Server instance.
Declare A RANDOM Class Instance At CLASS Level?
May 6, 2010If you run this code you will see that the 500 PictureBoxes that are added ( this is easier to show than adding pixels as a pixel is only a single point ) fall mainly on the diagonal.With regard the RANDOM class, why should this be like this when the bounds of the instances are? >>
p.Location = New Point(x.Next(0, Me.Width + 1
), y.Next(0, Me.Height + 1 ))
as in this code.>>
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How To Define A Twin Class
Oct 15, 2009I need to do something like this Class A End Class Class B Inherit A End Class A=B If i try i get an exception! that i can not cast B in A. How can I overcome this problem? I need to define 2 classes B identical to A but as a distinct class What I need is to be able to cast one class to the other like A=B or B=A I tried with directcast but i got the exception what can I do
View 1 RepliesDeclare An Internal Class Within A Public Class?
Nov 17, 2008how to declare an internal class within a public class using vb.net?
View 2 RepliesDefine The MyMethod() Within The Class MyCls?
Jul 28, 2010Interface Iinterface
Sub myMethod()
End Interface
class myCls implements Iinterface
End Class
i did this and i wanted to define the myMethod() within the class myCls but i am getting an error in this line:
class myCls implements Iinterface
error:end of statement required
VS 2008 Define A Class As An Instance?
Apr 17, 2010I would like to define a class as something like a constant, and use the class directly rather than having to always create an instance. Is this possible? I've tried a handful of combinations of syntax, but nothing I've tried lets me do what I'm after. To give an idea of what I'm after:
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BGW In One Class And The Long Process For The BGW (DoWork) In Another Class Or Module?
Nov 16, 2009I' ve got a short question concerning BackgroundWorker.Is it possible to have the main code for the BGW in one class and the long process for the BGW (DoWork) in another class or module?
I couldn't find anything helpful on the internet.Here is my code - DoWork in a separate class doesn't work:
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Define A Property In Class Which Is An Array (of Doubles)?
Feb 6, 2012I need to define a property in my class which is an array (of doubles).My original (bad) version is this:
Public Class Market
Property Correlations0 As Double
Property Correlations1 As Double
Property Correlations2 As Double
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This however doesn't work. I get an error already at design time: "Public Property Correlations as Double has no parameters and its return type cannot be indexed."What should I do with it? I also do not know in advance how large the array should be (the array size is determined at runtime based on other properties).
Define The Base Class Of A Form At Runtime?
Apr 29, 2010I'm developing a software that handles very specific regional standards. In one part of the country they have different standards for entering this data than they do in other parts of the country. In fact there are hundreds or thousands of possible configurations that would be best in various regions.
The solution I've come up with is to write a program that can load different control configurations with the supporting code to its main form at runtime. I do not know how to accomplish this. Would I use visual inheritance at runtime? Would I use a plugin system? I just need to potentially allow a power user to design thier own interface or to modify an existing interface to better suit thier needs.
Edit: Is there a way to define the base class of a form at runtime? Could I create user controls in a plugin and pass them in to the host program?
VS 2008 PropertyGrid Class Properties - Define The Color
Oct 21, 20091 - Need to create a kind of composite property, like the font property, that it's showed with a plus sign to expand. For example i need to define a new pen, i need to define the color and the width... 2 - I need to define the color for one brush, but if i create a property of the type brush in the PropertyGrid it appears like "System.Drawing.SolidBrush"
View 2 RepliesAdd A Class And Get The Driver Module To Read From The Class?
Nov 13, 2009What is a driver module, and how would I add a class and get the driver module to read from the class.
View 2 RepliesCan't Define A Specific Instance Of Static Method Created As A Java Class
Mar 12, 2011Under Visual Basic 2010, I am trying to define a specific instance of a static method that was created as a Java class. I have a vendor supplied dll added in as a reference.[code]...
But, I can't seem to define a specific instance of this method. Using "IntegrationMethod.getIntegrationMode()"always returns a value of zero.
There doesn't appear to be any way to "setIntegrationMode" to a specific value.
The documentatoin for this Class as provided by the vendor are shown below.
When I asked the vendor for assistance, their response was: "
Our javadocs for the IntegrationMethod class show that we provide three predefined instances of the IntegrationMethod class[code]...
Object Oreinted Random Failure - Define Two Instances Of Class And Configure ?
Oct 27, 2009I am having a problem with a and OOP class i made that contains a sub that creates random integers.
Problem is if i define two instances of this class and configure them(name in this case) then they both display different names but the random integers are ALWAY the same. in this case having the integers the same kinda kills the idea of the program.
Is it possible that the random part only every works for one class, but if .NET is fully OOP then this should not be possible... right?
Some of my Code (broken down to something smaller) i will display for obvious reasons.
Code:
Use Global X As String In Vb6 In A Module To Declare It With Global Privelages?
May 1, 2009i could use Global x as string in vb6 in a module to declare it with global privelages, how can i do this in vb2008? how to declare a global variable in vb2008? so that i could use it anywhere i want. i know global variables are not recommended in programming but i need one.
View 4 RepliesDeclare A Class As Friend Of Another In VB?
Jun 30, 2009I have class Aand BHow do i declare the class B as a friend of A?
View 4 RepliesDeclare A Class In Two Files?
Dec 12, 2011Say some function is defined in one file and another function is defined in another file
In C++ you can do that right
Declare An Array As A Class?
Jun 21, 2010I could have an array of players but I cant dim and array as new and my players are all a class I made called gameobject
View 4 Replies
