Call the dispose method from code for clean up of objects

Which controls do not have events?
Timer control.

What is the maximum size of the textbox?
65536.

Which property of the textbox cannot be changed at runtime?
Locked Property.

Which control cannot be placed in MDI?
The controls that do not have events.

What is the difference between proc. sent BY VAL and BY SUB?
BY VAL: changes will not be reflected back to the variable.
By REF: changes will be reflected back to that variable.( same as & symbol in c, c++)