What is partial class in c#

Question

just show a demo of it

Answer 1

It is possible to split the definition of a class or a struct, an interface or a method over two or more source files. Each source file contains a section of the type or method definition, and all parts are combined when the application is compiled.

public partial class Employee
{
public void DoWork()
{
}
}

public partial class Employee
{
public void GoToLunch()
{
}
}

Answer 2

https://docs.microsoft.com/en-ca/dotnet/csharp/programming-guide/classes-and-structs/partial-classes-and-methods