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Asked by Saravana Last Modified
Answer Partial classes were introduced in .NET 2.0 as a language feature that allows a single class to be defined in multiple files. Each file contains a part of the class definition, and all the parts are combined into a single class at compile time. This feature was introduced to facilitate code organization and separation of concerns.
Here are some key points about partial classes in .NET 2.0:
Definition Syntax:
partial keyword in the class definition. Each part of the class is declared with the partial keyword, and all parts must share the same class name.// File 1: MyClassPart1.cs partial class MyClass { // Part 1 of the class definition public void Method1() { /* ... */ } } // File 2: MyClassPart2.cs partial class MyClass { // Part 2 of the class definition public void Method2() { /* ... */ } } Combination at Compile Time:
Use Cases:
Benefits:
Here's an example illustrating a partial class in .NET 2.0:
// File 1: MyClassPart1.cs partial class MyClass { public void Method1() { /* ... */ } } // File 2: MyClassPart2.cs partial class MyClass { public void Method2() { /* ... */ } } // In another file or the same file // This is the combined class at compile time class Program { static void Main() { MyClass obj = new MyClass(); obj.Method1(); obj.Method2(); } } In this example, MyClass is defined in two separate files, and at compile time, the compiler combines them into a single class. The Main method demonstrates calling methods from both parts of the class.
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