question about passing by reference...

[benmartin101]

I have this code:

private void button1_Click(object sender, System.EventArgs e)
		{
			class[] b;
			b = new class[1];
			func(b);
		}

		private void func(class[] a)
		{
			func2(a[0]);
		}

		private void func2(class a)
		{
			a = new class();
			a.member1 = "hello";
		}

after the code goes through func2(), a[0] is still "undefined". Shouldn't a[0] be an instance with property member1 equaling to "hello"? I'm confused here.
I "could" put "ref" in the declaration, but I've always thought that in .net, classes are always passed by reference.