What is "Polymorphism" and what are Polymorphism in VB.Net?
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Answer Posted / rupali
Polymorphism is ability for redefining methods for derived
classesin OOPs.
its of two types:
1.Compiletime : Method overloading
Methods with same name but diff signatures.
Example:
Public class Calculation
public overloads sub Add(x as integer,y as integer)
return x+y
End Sub
Public overloads sub Add(x along,y as long, z as long)
return x+y+z
End sub
End class
2.Runtime :Method Overriding
Two or more methods with same name,same signatures but with
different implementations.
Example:
Public class DrwingObject
Public Overridable function Draw() as String
return "i am in generic object"
End functin
End class
Public class Line inherits DrawingObject
Public overrides functin Draw() as string
return " i am line"
End Function
End class
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thak you Mr Govind for replying to my question. My next question is that how to retrieve image stored in an SQL server table and assign it to any image control or picture control using VB.net
