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    <p>Based on what you're showing here it looks like the benefit of the command pattern is lost. There are a few reasons you might want to use the command pattern in the context of a WinForms app.</p> <p>You want to execute a command later</p> <pre><code>public interface ICommand { void Execute(); } </code></pre> <p>Keep a history of executed commands so they can be undone by the user</p> <pre><code>public interface ICommand { void Execute(); void Undo(); } </code></pre> <p>Check permissions to see if the current user has rights to execute the command. For example, maybe you have a <code>RefundCustomerCommand</code> and not all customer service agents have the right to issue a refund so you want to disable a button on the form.</p> <pre><code>public interface ICommand { void Execute(); bool CanExecute { get; } } </code></pre> <p>You can also roll multiple commands together in a composite like this:</p> <pre><code>public class CompositeCommand : ICommand { private readonly List&lt;ICommand&gt; commands; public CompositeCommand() { commands = new List&lt;ICommand&gt;(); } public void Add(ICommand command) { commands.Add(command); } public void Execute() { foreach (var command in commands) command.Execute(); } } </code></pre> <p>The command pattern also works nicely with the decorator. You can easily add additional cross-cutting behavior to your commands like retry logic:</p> <pre><code>public class RetryOnTimeout : ICommand { private readonly ICommand command; private int numberOfRetries; public RetryOnTimeout(ICommand command, int numberOfRetries) { this.command = command; this.numberOfRetries = numberOfRetries; } public void Execute() { try { command.Execute(); } catch (TimeoutException) { if (++numberOfRetries &gt; 3) throw; Execute(); } } } </code></pre>
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    1. POCommand object pattern wannabe or the real thing?
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    1. USMike Valenty
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    1. COThanks Michael. So from your answer, would it make sense if the form would still instantiate the manager (let's forget about dependency injection for now on the manager) injecting itself to it, create all the necessary commands in some kind of composite and then depending on the operation needed have the composite find the appropriate command return its interface so the form can just run its execute method? And a second question although it may be subjective, does all of this make sense or is it overkill? Would it be better to use another pattern?
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      1. USSergio Romero
    2. COI'm not really following your scenario. If your solution is complicated, hopefully it's because the problem is complicated. The idea of finding the appropriate command and returning an interface is pretty common though. For example, a common solution to implementing a protocol like SMTP is to have an object that manages the socket and then dispatches to command objects based on the message (HeloCommand, MailFromCommand, RcptToCommand, etc...). The command objects can be looked up dynamically.
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