Invoke contra begininvoke

[Jedhi]

How do I combine a delegate with an invoke

 

public delegate void FlowerDelegate(byte color);

public FlowerDelegate Flowerchosen;

 

Flowerchosen.begininvoke(...)

 

This will obviosuly works with begininvoke, but I want to make my calls synchrounously instead. How can I do that ?

[PlausiblyDamp]

In C# you can just use the delegate like a normal function call i.e.

 

Flowerchosen(3);

 

the C# compiler will actually generate the code as if you had written Flowerchosen.Invoke(3) .

[Jedhi]

The last two parameters of begininvoke are System.AsyncCallback and object.

The object is used to set the state_of_the_invoke, that you later can verify in your IsCompleted function

 

public void IsCompleted(IAsyncResult ar)

{

if (ar.AsyncState == state_of_the_invoke)

}

 

When I now use invoke, does it mean that I no longer can use state, or do I have to make a global function that keeps track of states ??

[PlausiblyDamp]

If you are calling the delegate synchrounously then there is no need to track if it has completed - when the call returns it has completed / if it hasn't returned it hasn't completed.

The callback / asyncresult are only required when dealing with delegates in an asynchrounous way.