Action Delegate and LINQ

Question

Why the following code didn't step inot the TranferLocal method?

Action<string, IEnumerable<string[]>, Action<TextWriter, string[]>> transfer;

transfer = (f, d, a) => TransferLocal(FilePath, f, d, a);

I put a break point in the TransferLocal method and it didn't stop over there.

Thanks.

Vulpes · Answer

Unless there's some relevant code you haven't shown the TransferLocal method won't be called (and the debugger won't step into it) until the Action delegate to which the lambda expression is assigned is actually invoked. You can see that this is so from this simple program which doesn't display anything on the console until a key is pressed: using System; class Test { static void Main() { Action act = () => Console.WriteLine(Hello); Console.ReadKey(); // pause act(); Console.ReadKey(); } }