CH. 6 icomp 2 vocab-- not from class
A top controlled Do While loop begins with the keywords, Do While. Next the condition is specified. The condition is expressed using the same operators that are available with the If statements
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Any condition that can be specified in an If statement can be specified in a Do While condition. The condition can compare numeric values or string values.
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Because the While condition is the last statement of the loop, the body of the loop is executed one time regardless of the status of the condition.
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Visual Basic provides top controlled and bottom controlled Do While and Do Until loops, meaning it can be execute four types of Do loops
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When using an input box, the data should be checked using the IsNumeric function and If statements.
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Decision structure
A decision structure allows a program to perform actions only under certain conditions. In code, you can use the IF statement to write a simple decision structure.
Looping structure
A major control structure to repeat a series of instructions either while a condition is true (or not true) or until a condition is true (or not true).
hot key
A special combination of keys that causes a specific command to be executed.
Action Tag
Allows you to create a full standard menu bar commonly provided in Windows programs, with File, Edit, Tools, and Help menus. Appears in the upper-right corner of many objects, including a MenuStrip. Provide a way for you to specify a set of actions for an object as you design a form.
Example of Addition Compound Operator
Assume that intResult = 24, decResult, and strSample = "tree" ---------------Example----------------- intResult += 1 ------------Result---------------------- intResult = 25
Example of Addition Single Operator
Assume that intResult = 24, decResult, and strSample = "tree" ---------------Example----------------- intResult = intResult + 1 ------------Result---------------------- intResult = 25
Example of Concatenate Compound Operator
Assume that intResult = 24, decResult, and strSample = "tree" ---------------Example----------------- strSample &= "house" ------------Result---------------------- strSample = "treehouse"
Example of Concatenate Single Operator
Assume that intResult = 24, decResult, and strSample = "tree" ---------------Example----------------- strSample = strSample & "house" ------------Result---------------------- strSample = "treehouse"
General Format of the Do....Until Loop (Bottom-Controlled)
Do ' Loop Body Loop Until condition
General Format of the Do....Until Loop (Top-Controlled)
Do Until condition ' Loop Body Loop
&File
F is the the hot key
The general format of a For....Next loop
For Control Variable = Beginning Numeric Value To Ending Numeric Value ' Body of the Loop Next
Similar to a MessageBox object, you code the ____________ function to specify when the ___________ object appears.
InputBox
Which letter of the word is often used for the hot key?
Most of the time the first letter is used but it is not always the case. Example: E&xit
To activate hot key
Press Alt Example: Alt + F ( to open file)
Debugging
Resolving defects in code
Action tags provide a way for you to specify a set of actions, called _____, for an object as you design a form
Smart actions
Priming the Loop
Starting a loop with a preset value in the variable(s) tested in the condition.
To create a list box, you use the ListBox object provided in the __________ .
Visual Basic Toolbox
Creating a hot key
When a ampersand is used before a letter a hot key is created
E&xit
X is the hot key
Instead of typing the menu name on a MenuStrip object, you can choose to add a _____, _______, or ________ to the _______.
a menu item, combo box, or text box to the menu bar.
Compound Operator
allows you to add, subtract, multiply, divide, use modulus or exponents, or concatenate strings, storing the result in the same variable
Breakpoints
are the stop points placed in the code to tell the Visual Studio 2010 debugger where and when to pause the execution of the application.
The InputBox function displays a
dialog box that consists of a message asking for input, input area, a title, an OK button, and a Cancel button.
Iteration
each repetition of the loop
writing a menu item event handler is the same as writing an _____________.
event handler for a button click
The Do Until loop
executes until the condition becomes true. It is stated as, "Do the loop processing until a condition is true."
When IntelliSense is used to enter a For....Next loop it automatically _______ the code properly.
indention
The beginning, ending, and step values used in a For....Next loop can vary based on ____ from a user
input
The Input object
is a dialog box that prompts the user to enter a value
Menu
is a group of commands, or items, presented in a list.
Infinite Loop
is a loop that never ends.
Menu bar
is a strip across the top of a window that contains one or more menu names.
Iteration structure
is another name for looping
&
is known as a ampersand
Decision structure
is one of the three fundamental control structures used in computer programing
Top controlled loop
is tested before the loop is entered. The body of a top-controlled loop might be executed at all because the condition being tested might be true before any processing in the loop occurs.
Control Value
is the numeric value that keeps track of the number of iterations the loop completes
What is the a step value?
is the value in a For....Next loop that is added to or subtracted from the beginning value on each iteration of the loop
Accumulator
is the variable that contains an accumulated value such as the total of speeds
Counter
is the variable that keeps track of how many items are entered
A ListBox displays a group of values, called ________, with one _____ per line.
items, with one item per line
The general format of adding items to a ListBox object is
lstListBoxName.Items.Add(Variable Name)
The general format to clear the ListBox is
lstListBoxName.Items.Clear ()
The prefix for MenuStrip object is
mnu
The general format to assign the selected item in a ListBox Object is
strVariableName = lstListBoxName.SelectedItem
Bottom controlled loop
test the condition at the bottom of the loop, so the body of a bottom controlled lop is executed at least once.
Do loops are either _________ or ______ depending on whether the condition is tested before the loop begins or after the body of the loop has executed one time.
top controlled or bottom controlled
When is the For......Next Loop used?
when a selection of code is to be executed an exact number of times
The SelectedItem property identifies
which item in the ListBox is selected.
