Question

I want to create a list of methods to execute. Each method has the same signature. I thought about putting delegates in a generic collection, but I keep getting this error:

‘method’ is a ‘variable’ but is used like a ‘method’

In theory, here is what I would like to do:

List<object> methodsToExecute;  int Add(int x, int y) { return x+y; }  int Subtract(int x, int y) { return x-y; }  delegate int BinaryOp(int x, int y);  methodsToExecute.add(new BinaryOp(add)); methodsToExecute.add(new BinaryOp(subtract));  foreach(object method in methodsToExecute) {     method(1,2); } 

Any ideas on how to accomplish this? Thanks!

Answer 1

You need to cast the object in the list to a BinaryOp, or, better, use a more specific type parameter for the list:

delegate int BinaryOp(int x, int y);  List<BinaryOp> methodsToExecute = new List<BinaryOp>();  methodsToExecute.add(Add); methodsToExecute.add(Subtract);  foreach(BinaryOp method in methodsToExecute) {     method(1,2); }