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Read Key() End Sub End Module The modifiers are keywords added with any programming element to give some especial emphasis on how the programming element will behave or will be accessed in the program For example, the access modifiers: Public, Private, Protected, Friend, Protected Friend, etc., indicate the access level of a programming element like a variable, constant, enumeration or a class.

NET) is an object-oriented computer programming language implemented on the . Although it is an evolution of classic Visual Basic language, it is not backwards-compatible with VB6, and any code written in the old version does not compile under VB. Write Line("The Color Green is : " & Colors.green) Console.

Therefore, it has full access to all the libraries in the . NET, not only under Windows, but even Linux or Mac OSX. Net a widely used professional language: In this chapter, we will discuss the tools available for creating VB. Let us now briefly look into what do class, object, methods and instant variables mean. Let us look at an implementation of a Rectangle class and discuss VB. Write Line("Area: ", Get Area()) End Sub Shared Sub Main() Dim r As New Rectangle() r. Instance methods are invoked through an object of the class: Data types refer to an extensive system used for declaring variables or functions of different types. The following table shows all the data types available: Module Data Types Sub Main() Dim b As Byte Dim n As Integer Dim si As Single Dim d As Double Dim da As Date Dim c As Char Dim s As String Dim bl As Boolean b = 1 n = 1234567 si = 0.12345678901234566 d = 0.12345678901234566 da = Today c = "U"c s = "Me" If Script Engine = "VB" Then bl = True Else bl = False End If If bl Then 'the oath taking Console. Write Line("declaring on the day of: ", da) Console. Write Line("The Single: , The Double: ", si, d) End If Console. The Enum statement can be used at the module, class, structure, procedure, or block level.

NET programs on Mono, the open-source alternative to . Objects of the same kind are said to have the same type or, more often, are said to be in the same class. Net program, it can be defined as a collection of objects that communicate via invoking each other's methods. Depending upon the design, it may need ways for accepting the values of these attributes, calculating area and displaying details. Read Line() End Sub End Class In previous chapter, we created a Visual Basic module that held the code. Shared methods or static methods can be invoked without creating an object of the class. Write Line("Lets see what happens to the floating point variables:") Console. The Enum statement declares an enumeration and defines the values of its members.

Every once in awhile, you come across this exception: System.