private System.ComponentModel.IContainer components;

[Edward Yang]

The designer generates this class member variable but never assigns it any
value.

private System.ComponentModel.IContainer components;

What is the purpose to have this 'useless' variable here?

 

[Rob Tillie]

I believe the thing needs it for design-time designing support.

Greetz,
-- Rob.

 

[Edward Yang]

Yes, it is. But how is it needed by the design support?