add a protected method to a class in csharp

To add a protected method to a class in C#, you can use the protected access modifier when defining a method. This will make the method accessible within the class and any derived classes, but not from outside the class.

Here's an example:

main.cs
public class MyClass
{
    protected void MyProtectedMethod()
    {
        // Method implementation
    }
}
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In the example above, MyProtectedMethod() is defined with the protected access modifier. This means that it can only be accessed within the same class or any derived classes.

If you try to call MyProtectedMethod() from outside the class or a derived class, you will get a compile-time error. This is because the method is not accessible from outside the class due to its access modifier.