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Partial classes in VB.NET

Posted by Munesh Sharma in Articles | VB.NET Articles on March 15, 2011

Tags: Partial interface, Partial keyword in VB .net, Partial process image, Partial Structure, Partial Window Form

In this article,we will discuss about Partial keyword.

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Reader Level: Beginner

Partial Classes

Partial classes mean that your class definition can be split into multiple physical files.

Logically, partial classes do not make any difference to the compiler. During compile time,

It simply groups all the various partial classes and treats them as a single entity.

There are several situations when splitting a class definition is desirable:

When working on large projects, spreading a class over separate files allows multiple
programmers to work on it simultaneously.
When working with automatically generated source, code can be added to the class
without having to recreate the source file.Visual Studio uses this approach when creating
Windows Forms, Web Service wrapper code, and so on. You can create
code that uses these classes without having to edit the file created by Visual Studio.

Coding for partial Class

Public Partial Module Employee

Public Sub show()
Console.WriteLine("MCN")

End Sub
End Module

Public Partial Module employee

Public Sub Display()
Console.WriteLine("soluation")

End Sub
End Module

Module output

Public Shared Sub Main()

Dim e1 As New employee()
e1.Display()
e1.show()

End Sub
End Module

Output:

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Partial classes in VB.NET

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