Question

I have a program that has the following code:

foreach (string section in DataAccessLayer.AcceptedSections)
{
    switch (section)
    {
        case "Section1":
            Console.WriteLine("Section 1");
            break;
        case "Section2":
            Console.WriteLine("Section 2");
            break;
        case "Section3":
            Console.WriteLine("Section 3");
            break;
        default:
            Console.WriteLine("Default section");
            break;
    }                    
}

Is there anyway i can do what this code does without providing the section’s string again within the case? The DataAccessLayer.AcceptedSections is dynamic and i don’t want to have to add another section case to my code, rebuild and redeploy every time a new section comes on board. It’s Friday and my mind is not working very well.

For Example:
I don’t want to add the following code when Section 4 gets added to the database:

case "Section4":
    Console.WriteLine("Section 4");
     break;

Answer 1

Have a Dictionary<string,Action<T>> that is keyed by section. This will completely replace the switch statement.

Invoke the corresponding action:

foreach (string section in DataAccessLayer.AcceptedSections)
{
    myActionsDictionary[section]();
}