Command Pattern : How to pass parameters to a command?
c#, command-pattern, design-patterns
Solution
You'll need to associate the parameters with the command object, either by constructor or setter injection (or equivalent). Perhaps something like this:
public class DeletePersonCommand: ICommand
{
private Person personToDelete;
public DeletePersonCommand(Person personToDelete)
{
this.personToDelete = personToDelete;
}
public void Execute()
{
doSomethingWith(personToDelete);
}
}
Problem
My question is related to the command pattern, where we have the following abstraction (C# code) : ``` public interface ICommand { void Execute(); } ``` Let's take a simple concrete command, which aims to delete an entity from our application. A `Person` instance, for example. I'll have a `DeletePersonCommand`, which implements `ICommand`. This command needs the `Person` to delete as a parameter, in order to delete it when `Execute` method is called. What is the best way to manage parametrized commands ? How to pass parameters to commands, before executing them ?