pass a method as a parameter

[yoramo]

hello

can I pass a static method as a parameter to a method?

if the answer is yes how do I do that ? how do I call the method ?

yoramo.

 

[Morten Wennevik]

hello

can I pass a static method as a parameter to a method?

if the answer is yes how do I do that ? how do I call the method ?

yoramo.

Is this what you mean?

private static string name = "Hello World!";

private static string method1()
{
return name;
}

private void method2(string text)
{
MessageBox.Show(text);
}

private void method3()
{
method2(method1());
}

 

[yoramo]

No. I need a way to call a method that will be pass as a parameter to
another method.

hello

can I pass a static method as a parameter to a method?

if the answer is yes how do I do that ? how do I call the method ?

yoramo.

Is this what you mean?

private static string name = "Hello World!";

private static string method1()
{
return name;
}

private void method2(string text)
{
MessageBox.Show(text);
}

private void method3()
{
method2(method1());
}

 

[yoramo]

OK, I figured it out what I need is a delegate!!!

 

[Shiv Kumar]

You need to use Delegates for this. A Delegate is strongly typed method pointer.

You define a delegate like so:

public delegate void DoSomethingDelegate(int i);

(This is a kind of global delegate. You could define a delegate within a class as well).
Delegates are objects (even thou the decleration above might not indicate as such) and so need to be created before you can use them. They typically take a parameter in their constructor, a method that has the same signature as the delegate.

So lets say you have a method called Calcuate in a class that has the same signature as the delegate above and you wanted to pass this method to another object (or method) you would do this

private void Calculate(int num)
{
//Some code here
}

TheMethodThatRequiresAMethodAsAParamter(new DoSomethingDelegate(Calculate));



public void TheMethodThatRequiresAMethodAsAParamter(DoSomethingDelegate m)
{

}

Now the parameter m is your reference to the meothd Calculate so you can call calculate simply like so:

m(56);

FYI, you can pass static and even private methods as parameters to a delegate's contructor. You can even have a return type in a delegate instead of void (I won't go into multicast delegates here to keep things simply).


Hope this helps.