@void

_var

void

_void

Button presses generate events

All Forms, components and controls are classes

A Form is a container

CheckBoxes are used to represent a set of multually exclusive options

An array is a data structure that contains a number of variables, which are accessed through computed indices

The elements of the array are all of the differenct types

At run-time, a value of an array type is null or a reference to an instance of that array type

The dimension lenghts are not part of the type of the array, but rather are established when an instance of the type is created at run-time

The members of an array are the members inherited from class System.Array

The System.Array type is the abstract base type of all array types

System.Array is itseft an array-type

An implicit reference conversion exists any array type to System Array

public virtual static void Display(){}

public virtual void Display(){}

public void virtual Display(){}

public static virtual void Display(){}

To hide sensitive information and help insure encapsulation

All over above

To help insure inherit

To make it more complicated for accessing methods and variables

Make a Menu
Attach the menu to Form’s DisplayMenu property

Make a Menu
Attach the menu to Form’s ContextMenu property

Make a Menu
Attach the menu to Form’s RightClickMenu property

Make a Menu
Attach the menu to Form’s Menu property

Class

Delegates

All the options mentioned

Interface

Set the property Form.ClosedBox to false

Set the property Form.CloseBox to false

Set the property Form.TitleBox to false

Set the property Form.ControlBox to false

while(IstKeys.Item.Count > 0)
{
IstKeys.Item.RemoveAt(IstKeys.SelectIndex):
}

while(IstKeys.SelectedItems.Count > 0)
{
IstKey.Items.RemoveAt(IstKeys.SelectedItem):

while(IstKeys.SelectedItems.Count > 0)
{
IstKey.Items.Remove(IstKeys.SelectedItem):

#