| re: Which constructor is used when instantiating an array of objs ?
MyPointC[] vc=new MyPointC[5];
does not allocate any instances in the array, it only cretaes the
System.Array object so therefore none of the MyPointC constructors are
called.
you would have to do:
MyPointC[] vc=new MyPointC[5];
vc[0] = new MyPointC();
vc[1] = new MyPointC(11);
vc[1] = new MyPointC(22222);
HTH
Ollie Riches
"david" <fake_david_fake-usenet1@yahoo.it> wrote in message
news:23db7e01.0412030358.584adbc6@posting.google.c om...[color=blue]
> I have a question (not sure if just a newbie one, or a stupid one)
> whose answer I couldn't find on the C# books and tutorials I could put
> my hands on.
>
> Consider the following useless class (could be a struct as well, if
> you just comment out the non static parameterless constructor) and the
> Main() routine :
>
> using System;
>
> class MyPointC
> {
> int x;
> int y;
> internal static int a=-1;
>
> static MyPointC()
> { Console.WriteLine("static constr."); }
>
> public MyPointC()
> { Console.WriteLine("0 args constr."); x=1; y=2;}
>
> public MyPointC(int t)
> { Console.WriteLine("1 args constr."); x=y=t; }
> }
>
> public class David
> {
>
> public static void Main()
> {
> int cc=MyPointC.a;
> // causes static constructor to run
>
> MyPointC c1=new MyPointC();
> // causes 0 args constructor to run
>
> MyPointC c2=new MyPointC(11);
> // causes 1 args constructor to run
>
> MyPointC[] vc=new MyPointC[5];
> // no explicit constructor seems to run
> }
> }
>
> The question is :
> "How can I instantiate an array of objects (both from a class or a
> struct), specifying - as I do when creating single objects - which
> constructor should be run, to let, for instance, the array elements
> (or anythinhg else) being initialized the way I want ?"
>
>
> MyPointC[] vc=new MyPointC()[5];
> or
> MyPointC[] vc=new MyPointC[5]();
>
> are both invalid syntax, rejected by the compiler.
>
>
> Am I missing a basic thing or two ?!?
>
>
> Thanks, David[/color]
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