How can I pass a parameter in Action?

Question

private void Include(IList<string> includes, Action action) {     if (includes != null)     {         foreach (var include in includes)             action(<add include here>);     } } 

I want to call it like that

this.Include(includes, _context.Cars.Include(<NEED TO PASS each include to here>)); 

The idea is pass each include to the method.

Answer 1

If you know what parameter you want to pass, take a Action<T> for the type. Example:

void LoopMethod (Action<int> code, int count) {      for (int i = 0; i < count; i++) {          code(i);      } } 

If you want the parameter to be passed to your method, make the method generic:

void LoopMethod<T> (Action<T> code, int count, T paramater) {      for (int i = 0; i < count; i++) {          code(paramater);      } } 

And the caller code:

Action<string> s = Console.WriteLine; LoopMethod(s, 10, "Hello World"); 

---

Update. Your code should look like:

private void Include(IList<string> includes, Action<string> action) {     if (includes != null)     {          foreach (var include in includes)              action(include);     } }  public void test() {     Action<string> dg = (s) => {         _context.Cars.Include(s);     };     this.Include(includes, dg); }