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Partial Classes In .Net

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

Logically partial classes donot make any difference to the compiler. During compile time it simply groups all the partial classes(with same name) and treats them as single entity.

Let us elaborate the parital classes with an example Here I have made a file PartialClass1.aspx having the partial class PartialClass as shown in fig

Picture showing the file PartialClass1.aspx with the Addition function

Click to Enlarge

Here in PartialClass I have defined a function called Addition for adding 2 numbers.

Then I make another physical file and again define the partial class with the same name PartialClass as shown in the fig

Picture showing the file PartialClass2.aspx with the Mul function

Click to Enlarge

Here in PartialClass I have defined a function called Mul for multiplication of 2 numbers.

Now in the third Class I am calling both the methods of PartialClass using the single object as shown in figure.

Picture showing calling the Addition and Mul function from a single class object

Click to Enlarge

As you can observe I can access both the functions through a single object of PartialClass

Posted By -	Karan Gupta

Posted On -	Saturday, September 25, 2010

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