Overloading allows methods within a class to have the same name but different signatures. The signature includes the name, number, and type of arguments but not the return type. Functions, procedures, constructors, and properties can be overloaded in VB.NET. Constructor overloading is a special case where constructors with the same name but different parameters are declared. Examples show overloading procedures to handle integer and string inputs differently and overloading constructors to accept integer and string parameters.

1. VB.NET:- Over Loading
BCA -501

2. 2
What is overloading?
 Overloading is the process of declaring methods of a class having the same name but
different signatures.
 The signature of a method comprises of the name of the method, the number and types
of arguments. The return type of method is not a part of the signature and hence cannot
be used as a factor for overloading.
 In VB.NET, functions, procedures, constructor and properties within a class can be
overloaded.
 The Overloads keyword is optional when overloading, but if any overloaded member
uses the Overloads keyword, then all other overloaded members with the same name
must also specify this keyword.

3. 3
Example of Procedure Overloading
Module Module1
Public Class X
Sub Sum(a As Integer, b As Integer)
Dim c As Integer
c = a + b
Console.WriteLine("Sum of {0} and {1} is {2}", a, b, c)
End Sub
Sub Sum(a As String, b As String)
Dim c As String
c = a + b
Console.WriteLine("The concatenated string is " & c)
End Sub
End Class
Sub Main()
Dim Y As New X()
Y.Sum(10, 20)
Y.Sum("Hello", " World")
Console.ReadKey()
End Sub
End Module

4. 4
Constructor Overloading
Module Module1
Public Class X
Public Sub New()
Console.WriteLine("Parameterless Constructor is called")
End Sub
Public Sub New(X As Integer)
Console.WriteLine("Integer parameter is passed through
Constructor")
Console.WriteLine("Value passed : {0}", X)
End Sub
Public Sub New(X As String)
Console.WriteLine("String parameter is passed through
Constructor")
Console.WriteLine("Value passed : {0}", X)
End Sub
End Class
Sub Main()
Dim x1 As New X()
Dim x2 As New X(10)
Dim x3 As New X("Programming")
Console.ReadKey()
End Sub
End Module
 Constructor Overloading is a special
case of method overloading.
 Parameterized Constructors that satisfy
the rule for overloading can be used
within classes.