Partial Class in C#

Question

Hi friends.... I know concept of class but I want to know about partial class ? What is partial class and what is the use of partial class ? Please explain with an example in details ? Thanks...

Vulpes · Answer

Partial classes allow you to split a class's definition over two or more files. The compiler then combines the partial classes and compiles the combined class just as if it had been written in a single file. It follows that the partial classes can't contain definitions of the same members. Partial classes are commonly used to enable an automated tool to produce one partial class and a human programmer to produce another. A windows forms application developed in Visual Studio is a case in point. Here's a simple example: public partial class Person { public void DoSomething() { } } public partial class Person { public void DoSomethingElse() { } } The compiler will compile this as though it had been written: public class Person { public void DoSomething() { } public void DoSomethingElse() { } }

Jignesh Trivedi · Answer

hi .Net 2.0 provided us with new feature called partial classes. Using partial classes we can use multiple files to keep the code of same class. In other word. A class defined in two or more files is called a partial class. The keyword partial is used to define the class. When working on large projects spreading a class over separate files allows multiple programmers to work on it simultaneously. During compile time all the partial class are compiled into one type only. please refer http://weblogs.asp.net/gunnarpeipman/archive/2008/06/08/c-and-partial-classes.aspx hope this help.