| About box | A window that
displays information about the
program; usually displayed from
the Help / About menu item.
|
 |
|
|
| absolute positioning | Placing
an element on a Web page by X
and Y coordinates.
|
|
|
|
| abstract class | A class that
cannot be instantiated but instead
is used for inheritance.
|
|
|
|
| abstract method | An empty
method declared with the
MustOverride keyword; must be
overriden in the derived class.
|
|
|
|
| AcceptButton property | Form
property that sets the default
button, which is activated with the
Enter key
|
|
|
|
| access key | Underlined
character that allows the user to
select using the keyboard rather
than the mouse; also called a hot
key.
|
|
|
|
| access level | Specification of the
permission required to access an
element. Examples: Private,
Public, Friend, and Protected.
|
|
|
|
| accessor method | The Get and
Set methods written to allow
external objects to access the
private properties of a class.
|
|
|
|
| AJAX | Asynchronous JavaScript
and XML; method of speeding Web
page display by updating only the
part of the page that has changes.
|
|
|
|
| AllowDrop property | A
property of a form or control used
for a drag-and-drop operation.
|
|
|
|
| ANSI code | A coding method
used to represent characters on a
microcomputer (American
National Standards Institute).
|
|
|
|
| argument | The expression to
operate upon in a function or
method. A value being passed to
or from a procedure.
|
|
|
|
| array | A series of variables;
each individual element can be
referenced by its index position.
Also called a list.
|
|
|
|
| assignment operator | An equal
sign (=); assigns a value to the
variable or property named on the
left side of the sign
|
|
|
|
| assignment statement | Assigns
a value to a variable or property
using an assignment operator.
|
|
|
|
| attribute | Supplies additional
information about an XML
element; must appear within single
or double quotes.
|
|
|
|
| authentication | The policies
used to determine who the user is;
may be Windows-based, formsbased,
Passport-based, or none (no
authentication performed).
|
|
|
|
| authorization | Determination of
the rights allowed for a particular
user. For ASP.NET applications,
can allow access from any user by
turning on impersonation.
|
|
|
|
| AutoCorrect | Popup
suggestions for corrections of
misspelled words in the Editor.
|
|
|
|
| Autos window | Window that
opens in IDE during execution;
automatically displays all variables
and control contents that are
referenced in the current statement
and three statements on either side
of the current one.
|
|
|
|
| base class | Class that is inherited
from; also called a super class or
parent class.
|
|
|
|
| binding source | Object that
establishes a link to a data
source
|
|
|
|
| block-level variable | A
variable declared inside a block of
code; only accessible within that
block.
|
|
|
|
| Boolean expression | An
expression that evaluates to True
or False. May be referred to as a
condition
|
|
|
|
| BorderStyle property | Property of a control that allows
the control to appear flat or threedimensional.
|
|
|
|
| bound control | A control that
automatically displays the contents
of database fields.
|
|
|
|
| breakpoint | Indicated point in
project code where execution
should break; used for debugging.
|
|
|
|
| browser | An application used to
render and display HTML code;
used to display Web pages; in VB
used to execute Web Forms.
|
|
|
|
| Brush object | Graphical object
for drawing filled shapes.
|
|
|
|
| Button | Control used to activate
a procedure.
|
|
|
|
| ByRef | Declares that an argument
passed to a procedure should be
passed as the address of the data
so that both calling and called
procedures have access to the
same memory location.
|
|
|
|
| ByVal | Declares that an argument
passed to a procedure should be
passed as a copy of the data. The
calling and called procedures do
not have access to each other’s
variables.
|
|
|
|
| Call (procedure call) | Execute
a procedure.
|
|
|
|
| callback | An object notifies the
program that it needs to do
something or that a situation exists
that the program needs to handle.
The object notifies the program of
the situation by firing an event.
|
|
|
|
| CancelButton property | Form
property that sets the Cancel
button, which is activated with the
Esc key.
|
|
|
|
| cascading style sheet (CSS) | A set of styles for formatting
elements of Web pages.
|
|
|
|
| Case structure | Selection
structure; can be used in place of
an If statement.
|
|
|
|
| casting | Converting from one
data type to another.
|
|
|
|
| CausesValidation property | Property of a control that forces
validation to occur on the control that just lost focus when this control receives the focus.
|
|
|
|
| CharacterCasing property | Property of text boxes that specifies
whether input should be left as
entered or converted to uppercase
or lowercase.
|
|
|
|
| check box | A control used to
indicate a value that may be True or
False. In any group of check boxes,
any number may be selected.
|
|
|
|
| checked | A check mark next
to a menu item indicates that the
option is currently selected.
|
|
|
|
| Checked property | Determines
if a check box is checked or not.
|
|
|
|
| child class | A class inherited
from another class, called the
parent. Also called a derived class
or subclass.
|
|
|
|
| child form | Multiple Document
Interface. A child form belongs to
a parent form, is displayed inside
the parent, and closes when the
parent does.
|
|
|
|
| class | A prototype or blueprint for
an object; includes specifications
for the properties and methods.
|
|
|
|
| class-level variable | A variable
that is available to all procedures
in the class and exists as long as
the class is loaded.
|
|
|
|
| clean compile | Code compiles
to Common Language Runtime
without errors.
|
|
|
|
| click-once deployment | New
simplified method of deploying VB
applications to another computer.
Provides for installation and
automatic updates via the Web.
|
|
|
|
| Close method | Closes forms or
files; releases resources used by
the object.
|
|
|
|
| code | Programming statements in
the Basic language.
|
|
|
|
| code separation model | A style
of Web Form in which the VB code
is in a separate file from the HTML
code.
|
|
|
|
| code snippet | Small sample
of code that illustrates coding
techniques; can be added to a
program in the editor.
|
|
|
|
| collection | A series of objects or
an object that can contain a series of
objects; has properties and methods.
|
|
|
|
| color constant | Values assigned
in the Color class. Examples:
Color.Red and Color.Blue.
|
|
|
|
| column | A vertical section of a
grid control.
|
|
|
|
| ComboBox control | A control
that is a combination of a list box
and a text box.
|
|
|
|
| common dialog | A set of
Windows dialog boxes available to
Visual Basic programmers for Open,
Save, Fonts, Print, and Color.
|
|
|
|
| comparison operator | See
relational operator.
|
|
|
|
| component tray | Area across
the lower edge of a form designer
window; used to store components
that are not visible on the form.
|
|
|
|
| compound Boolean expression | Multiple conditions combined with
the use of the logical operators And
or Or.
|
|
|
|
| concatenation | Joining string
(text) fields. The ampersand (&) is
used to concatenate text.
|
|
|
|
| condition | An expression that
will evaluate True or False. May
be a comparison of two values
(variables, properties, constants)
using relational operators.
|
|
|
|
| constant | A value that cannot
change during program execution.
|
|
|
|
| constructor | A procedure that
runs automatically when an object
is instantiated from that class. In
VB, a constructor is coded with
Sub New.
|
|
|
|
| container | An object that can
hold other objects.
|
|
|
|
| context menu | A popup menu,
sometimes referred to as a shortcut
menu or a right-mouse menu.
|
|
|
|
| context-sensitive Help | Use of
the F1 function key to directly
access the Help topic related to
the code or object containing the
cursor.
|
|
|
|
| ContextMenuStrip component | A container control used to create
context menus.
|
|
|
|
| control | An object used on a
graphical interface, such as a radio
button, text box, button, or label.
|
|
|
|
| CType function | Converts from
one object type to another; used
with a shared event procedure to
access the Sender object.
|
|
|
|
| data binding | Connecting a
control or property to one or more
data elements.
|
|
|
|
| data-bound controls | Controls
that can be set up to display the
data from a database.
|
|
|
|
| Data Designer | A window of
the VS IDE that shows a visual
representation of the schema of a
database; allows modification of
the schema.
|
|
|
|
| data file | A file used to store
small amounts of information such
as the contents of a list box.
|
|
|
|
| data source | The original source
of database data; may be a file, a
server, or an array or other object.
|
|
|
|
| data type | Specifies the type
of data a variable or constant can
hold, such as Integer, Decimal,
or String
|
|
|
|
| DataGridView control | A
control used to display database
data in a grid format.
|
|
|
|
| dataset | A temporary set of data
stored in the memory of the
computer.
|
|
|
|
| DateTime structure | Used to
retrieve and format the current
date and time.
|
|
|
|
| debug time | Temporary break in
program execution; used for
debugging.
|
|
|
|
| Debug.WriteLine method | Statement to write a line in the
Debug window; used to write a
message for debugging.
|
|
|
|
| debugging | Finding and
eliminating computer program
errors
|
|
|
|
| declaration | Statements to
establish a project’s variables and
constants, give them names, and
specify the type of data they will
hold.
|
|
|
|
| Declarations section | Code
outside of a procedure, used to
declare module-level variables.
|
|
|
|
| delimited file | A file in which
the data elements are separated
by a predefined character or
characters, such as a comma, tab,
or carriage return
|
|
|
|
| deployment | Distribution of a
compiled application to another
computer; normally done through a
setup.exe file. See click-once
deployment.
|
|
|
|
| derived class | A subclass
inherited from a base class; also
called a child class.
|
|
|
|
| design time | The status of the
Visual Studio environment while a
project is being developed, as
opposed to run time or break time.
|
|
|
|
| destructor | A method that is
called as an object goes out of
scope.
|
|
|
|
| DialogResult object | Used to
check to determine which button
the user clicked on a message box.
|
|
|
|
| direct reference | Accessing an
element of an array by a subscript
when the value of the subscript is
known.
|
|
|
|
| disabled | Enabled property set to
False; user can see the control but
cannot access it.
|
|
|
|
| Do and Loop statements | Statements to indicate the
beginning and ending of a loop. A
condition can appear on the Do or
on the Loop.
|
|
|
|
| Do/Loop | A loop constructed with
the Do and Loop statements.
|
|
|
|
| Document window | IDE
window that displays the Form
Designer, the Code Editor, and the
Object Browser.
|
|
|
|
| DoDragDrop method | A method
to begin a drag-drop operation for
a source object.
|
|
|
|
| DragDrop event | The event
that occurs when the user drags an
object and drops it on a form or
control that has its AllowDrop
property set to True
|
|
|
|
| DragEnter event | The event
that occurs when the user drags an
object over a form or control that
has its AllowDrop property set to
True; occurs before the DragDrop
event.
|
|
|
|
| DrawLine method | Method of
the Graphics object.
|
|
|
|
| DrawRectangle method | Method of the Graphics object;
used to draw squares and
rectangles.
|
|
|
|
| DrawString method | Method of
the Graphics object; sends a line of
text to the graphics page
|
|
|
|
| drop-down combo box | A
combo box control with a downpointing
arrow that allows the
user to drop down the list. Allows
efficient use of space on a form.
|
|
|
|
| drop-down list | A list box with a
down-pointing arrow that allows the
user to drop down the list. Allows
efficient use of space on a form.
|
|
|
|
| element | Single item within a
table, array, list, or grid.
|
|
|
|
| element (XML) | An item in an
XML file surrounded by tags.
|
|
|
|
| empty string | A string that
contains no characters; also called
a null string or zero-length string.
|
|
|
|
| Enabled property | Boolean
property of a control that determines
whether it is available or disabled
(grayed).
|
|
|
|
| encapsulation | OOP feature
that specifies that all methods and
properties of a class be coded within
the class. The class can hide or
expose the methods and properties,
as needed
|
|
|
|
| End If | Terminates a block If
statement.
|
|
|
|
| entry test | A loop that has its
test condition at the top. See
pretest.
|
|
|
|
| ErrorProvider component | A component that can display an
error icon and message when a
validation rule is violated for the
specified text box.
|
|
|
|
| event | An action that may be
caused by the user, such as a click,
drag, key press, or scroll. Events
also can be triggered by an internal
action, such as repainting the form
or validating user input.
|
|
|
|
| event procedure | A procedure
written to execute when an event
occurs.
|
|
|
|
| exception | An error that occurs
at run time.
|
|
|
|
| exit test | A loop that has its test
condition at the bottom. See
posttest.
|
|
|
|
| explicit conversion | Writing the
code to convert from one data type
to another; as opposed to implicit
conversion
|
|
|
|
| Express Edition | A “light”
version of Visual Basic. Available
for download at msdn.microsoft.com/
express.
|
|
|
|
| Extensible Application Markup Language (XAML) | Extension of
HTML used to create the visual
elements of a Windows Presentation
Foundation (WPF) window.
|
|
|
|
| field | A group of related
characters used to represent one
characteristic or attribute of an
entity in a data file or database.
|
|
|
|
| field-level validation | Checking
the validity of input data in each
control as it is entered, rather than
waiting until the user clicks a
button.
|
|
|
|
| file | A collection of related
records.
|
|
|
|
| FillEllipse method | Method
of the Graphics object; used to
draw circles and ovals.
|
|
|
|
| focus | The currently selected
control on the user interface. For controls such as buttons, the focus appears as a light dotted line. For
text boxes, the insertion point (also
called the cursor) appears inside
the box.
|
|
|
|
| Focus method | Sets the focus to
a control, which makes it the
active control.
|
|
|
|
| For and Next statements | A
loop structure; usually used when
the number of iterations is known.
|
|
|
|
| For Each and Next | A looping
construct for stepping through an
array; each element of the array is
accessed without the necessity of
manipulating subscripts
|
|
|
|
| For/Next loop | A loop structure;
usually used when the number of
iterations is known.
|
|
|
|
| ForeColor property | Property
that determines the color of the text.
|
|
|
|
| form | An object that acts as a
container for the controls in a
graphical interface.
|
|
|
|
| Form Designer | The IDE
window for creating the user
interface.
|
|
|
|
| format | A specification for the
way information will be displayed,
including dollar signs, percent
signs, and the number of decimal
positions
|
|
|
|
| format specifiers | Codes used
as arguments for the ToString
method; used to make the output
easier to read. Can specify dollar
signs, commas, decimal positions,
percents, and date formats.
|
|
|
|
| FormClosing event | Occurs
before a form unloads. A good
location to place the code to
prompt the users if they wish to
save any changes.
|
|
|
|
| Friend | The access level
specifier that limits access to the
forms in the current project.
|
|
|
|
| FromFile method | Retrieves an
image from a file.
|
|
|
|
| function | Performs an action and
returns a value.
|
|
|
|
| function procedure | A
procedure that returns a value.
|
|
|
|
| garbage collection | Automatic
deletion of objects from memory
after they are out of scope.
|
|
|
|
| general procedure | A procedure
not attached to an event; may be a
sub procedure or a function
procedure.
|
|
|
|
| graphical user interface (GUI) | Program application containing
icons, buttons, and menu bars.
|
|
|
|
| graphics | Lines, shapes, and
images. An image file assigned
to a PictureBox control; methods
of the Graphics class, such as
DrawString, DrawLine, and
DrawEllipse.
|
|
|
|
| GroupBox control | A control
used as a container for other
controls, such as a group of radio
buttons.
|
|
|
|
| handle | A small square on a
selected control at design time;
used to resize a control. Also
called a resizing handle.
|
|
|
|
| Help | The collection of reference
pages about programming in VB
and using the Visual Studio IDE.
|
|
|
|
| Hide method | Method of a form
or a control that makes it invisible
but does not unload it from
memory.
|
|
|
|
| horizontal scroll bar | A
Windows control that provides a
scroll bar that appears horizontally
on the form.
|
|
|
|
| IDE | Integrated development
environment. See Visual Studio
environment.
|
|
|
|
| identifier | A name for a variable,
procedure, class, or named constant;
supplied by the programmer.
|
|
|
|
| If/Then/Else | Statement block
for testing a condition and taking
alternate actions based on the
outcome of the test.
|
|
|
|
| Image property | A graphic file
with an extension of .bmp, .gif,
.jpg, .png, .ico, .emf, or .wmf.
|
|
|
|
| immutable | The inability of a
string to be modified once it is
created. A new string must be
created for any modifications.
|
|
|
|
| implicit conversion | A
conversion from one data type to
another that occurs automatically
or by default according to specified
rules.
|
|
|
|
| index | Position within a list or
array.
|
|
|
|
| information assurance | Secure
programming measure to provide
accurate and timely transfer of
information.
|
|
|
|
| inheritance | Ability to create a
new class based on an existing
class
|
|
|
|
| instance | An object created from
a class
|
|
|
|
| instance property | See instance
variable.
|
|
|
|
| instance variable | Each object
created from the class has a
separate occurrence of the variable.
|
|
|
|
| instantiate | Create an object
using the New keyword.
|
|
|
|
| integrated development environment (IDE) | Tool for
writing projects and solutions;
includes an editor, tools, debugger,
and other features for faster
development.
|
|
|
|
| Interval property | Determines
the amount of time until a Timer
component fires a Tick event;
measured in milliseconds.
|
|
|
|
| intranet | Network within a
company.
|
|
|
|
| intrinsic constant | Constant
supplied with a language or
application such as Color.Blue.
|
|
|
|
| IsMdiContainer property | Used
to create a parent form for MDI.
|
|
|
|
| Items property | Collection of
elements for a list box or combo
box control.
|
|
|
|
| Items.Add method | Adds
elements to the Items collection of
a list box.
|
|
|
|
| Items.Clear method | Clears all
elements from a list box.
|
|
|
|
| Items.Count property | Property that holds the number of
elements in a list box.
|
|
|
|
| Items.Insert method | Inserts
an element in a list for a list box.
|
|
|
|
| Items.Remove method | Removes the currently selected
item from a list.
|
|
|
|
| iteration | A single pass through
the statements in a loop.
|
|
|
|
| key field | The field (or fields) on
which a data file is organized; used
to search for a record.
|
|
|
|
| Label | A control that displays
text; cannot be altered by the user.
|
|
|
|
| Language Integrated Query (LINQ) | New .NET feature that
allows SQL-like queries to be
written in VB code.
|
|
|
|
| LargeChange property | A
property of a scroll bar that
determines how far to scroll for a
click in the gray area of the scroll
bar
|
|
|
|
| late binding | Program elements
cannot be determined at compile
time, but must be determined at
run time. Should be avoided, if
possible, for performance reasons.
|
|
|
|
| LayoutMdi method | Arranges
MDI child windows vertically,
horizontally, or cascaded.
|
|
|
|
| lifetime | The period of time that
a variable exists.
|
|
|
|
| line-continuation character | A space and underscore; used in
program code to indicate that a
Basic statement continues on the
next line.
|
|
|
|
| ListBox control | A control that
holds a list of values; the user
cannot add new values at run time.
|
|
|
|
| local | The scope of a variable or
constant that limits its visibility to
the current procedure.
|
|
|
|
| local variable | A variable that is
declared within a procedure and
may be used only in that
procedure.
|
|
|
|
| Locals window | Window that
opens in IDE during execution;
displays all objects and variables
that are within scope at break time.
|
|
|
|
| logic error | An error in a project
that does not halt execution but
causes erroneous results in the
output.
|
|
|
|
| logical operator | The operators
And, Or, Not, AndAlso, and
OrElse; used to construct
compound conditions and to
reverse the truth of a condition.
|
|
|
|
| loop | A control structure that
provides for the repetition of
statements.
|
|
|
|
| loop index | A counter variable
used in a For/Next loop.
|
|
|
|
| MaskedTextBox | A specialized
form of text box that includes a
Mask property, which can indicate
to the user the format of data
expected and require the correct
data type and format of input.
|
|
|
|
| Maximum property | Scroll bar
property for highest possible value.
|
|
|
|
| MaxLength property | Property
of text boxes that limits the number
of characters the user can enter as
input.
|
|
|
|
| MdiWindowListItem property | Determines whether the menu will
display a list of open MDI child
windows; used on the Window
menu.
|
|
|
|
| menu | A list of choices; the
available commands displayed in a
menu bar.
|
|
|
|
| Menu Designer | Feature of the
development environment for
creating menus; accessed by
adding a Main Menu component to
the component tray.
|
|
|
|
| MenuStrip component | A
control used to create menus for
forms.
|
|
|
|
| MessageBox | A dialog box that
displays a message to the user.
|
|
|
|
| method | Predefined actions
(procedures) provided with objects.
|
|
|
|
| Minimum property | Scroll bar
property for lowest possible value.
|
|
|
|
| modal | A dialog box that
requires a user response before
continuing program execution.
|
|
|
|
| modeless | A dialog box that does
not require a user response before
continuing program execution.
|
|
|
|
| module-level variable | A
variable that can be used in any
procedure within the current code
module.
|
|
|
|
| MouseDown event | The event
of a form or control that occurs
when the user presses the mouse
button.
|
|
|
|
| Multiline property | Boolean
property of many controls,
including labels and text boxes,
that allows text to appear on
multiple lines. WordWrap must
also be set to True.
|
|
|
|
| multiple document interface (MDI) | Multiple form project that
has parent and child forms.
|
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|
|
| multitier application | A
program designed in components
or services, where each segment
performs part of the necessary
actions. Each of the functions of a
multitier application can be coded
in a separate component and the
components may be stored and run
on different machines.
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|
| MustInherit | Modifier on a
class definition. The class cannot
be instantiated, but instead must
be used for inheritance.
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|
| MustOverride | Modifier on a
procedure definition; requires that
the procedure be overridden in an
inherited class.
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| My.Computer.FileSystem | VBspecific
objects for accessing files.
|
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|
| Name property | The property of
an object that is used to reference
the object in code.
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| named constant | Constant
created and named by the
developer.
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|
| namespace | Used to organize a
group of classes in the language
library; the hierarchy used to locate
the class. No two classes may have
the same name within a namespace.
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|
|
| namespace-level variable | A
variable that can be used in any
procedure within the current
namespace, which is generally the
current project.
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|
| nested If | An If statement
completely contained within
another If statement.
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|
| nested Try/Catch block | A
Try/Catch block completely
contained within another
Try/Catch block
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|
|
| NewLine character | The Visual
Studio constant Environment.
NewLine or ControlChars.
NewLine; used to determine line
endings.
|
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|
| Next method | Returns the next
in a series of random numbers for
an object of the Random class.
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|
|
| node (XML) | A branch of the
tree. The file can have only one
root node and multiple child
nodes.
|
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|
|
| Nothing | An object variable that
does not have an instance of an
object assigned. Formerly used to
destroy an object.
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|
| Now property | Current date and
time from the DateTime structure.
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|
|
| object | An occurrence of a class
type that has properties and methods; a specific instance of a control type, form, or other class.
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|
|
| object-oriented programming (OOP) | An approach to
programming that uses classes to
define the properties and methods
for objects. Classes may inherit
from other classes.
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|
|
| OpenFileDialog | Common
dialog component used to display
the Windows Open File dialog box;
allows the user to view files and
select the file to open.
|
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|
|
| Option Explicit | Setting this
option On forces variables and
objects to be declared before they
can be used.
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|
| Option Strict | Setting this
option On enforces strong data
typing.
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|
|
| order of precedence | Hierarchy of mathematical
operations; the order in which
operations are performed.
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|
| overloading | Allows a method
to act differently for different
arguments. Multiple procedures in
the same class with the same name
but with different argument lists.
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|
| overriding | A method in a
derived (inherited) class with the
same name and argument list as a
method in the parent (base) class.
The method in the derived class
overrides (supersedes) the one in
the parent class for objects of the
derived class.
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|
| parameterized constructor | A
constructor (Sub New ) that
contains an argument list; as
opposed to an empty constructor.
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|
| parameterized query | A
database query that allows a value
to be supplied at run time.
|
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|
|
| parent class | The base class for
inheritance, also called a super
class.
|
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|
| parent form | MDI container for
child forms.
|
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|
|
| Pascal casing | The naming
convention that specifies mixedcase
names; the first character
must be uppercase and the first
character of each word within the
name must be uppercase; the rest
of the characters must be
lowercase.
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|
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|
| Peek method | Used to look
ahead to determine if records
remain in a file stream.
|
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|
|
| Pen object | Graphical object for
drawing lines and shapes.
|
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|
|
| PictureBox control | A control
used to display an image.
|
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|
|
| pixel | Picture element; a single
dot on the screen; a unit of
measurement for displaying
graphics
|
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|
| Point structure | Holds X and Y
coordinates as a single unit.
|
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|
|
| polymorphism | OOP feature
that allows methods to take
different actions depending on the
situation. Methods may have the
same name but different argument
lists. Also refers to the naming
convention of naming methods
with similar actions the same in
each class.
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|
| postback | A round-trip to the
Web server.
|
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|
|
| posttest | A loop that has its test
condition after the body of the
loop; the statements within the
loop will always be executed at
least once; also called an exit test.
|
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|
|
| pretest | A loop that has its test
condition at the top; the statements
inside the loop may never be
executed; also called an entry test.
|
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|
|
| Print method | A method of the
PrintDocument class to begin
executing code for printing.
|
|
|
|
| print preview | View the printer’s
output on the screen and then
choose to print or cancel.
|
|
|
|
| PrintDocument component | Contains methods and events to set
up output for the printer.
|
|
|
|
| PrintForm | A method of a form
that prints the form in its current
state; can be set to print on the
printer or the Print Preview
window.
|
|
|
|
| PrintPage event procedure | Contains the logic for printing.
|
|
|
|
| PrintPreviewDialog component | Used to allow print previews for an
application.
|
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|
|
| Private | Variable or procedure
declared with the Private
keyword; available only inside the
current class.
|
|
|
|
| procedure | A unit of code; may
be a sub procedure, function
procedure, or property procedure.
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|
|
| Professional Edition | A version
of Visual Basic that includes fewer
features than the Team System
edition but more features than the
Standard and Express editions.
|
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|
|
| Project Designer | A tabbed
window of the IDE used to view
and set the project’s properties.
Displayed from Project /
ProjectName Properties.
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|
|
| project file | A text file that
contains information about the
current project. Displays in the
Solution Explorer and can be
viewed and edited in a text editor.
|
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|
|
| Properties window | A window
in the IDE used to set values for
properties at design time.
|
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|
|
| property | Characteristic or
attribute of an object; control
properties may be set at design
time or run time depending on the
specific property.
|
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|
|
| property procedure | Procedure
written with Set and Get keywords
to pass values to and from private
variables in a class.
|
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|
|
| Protected | Access modifier for a
variable or procedure; behaves as
private but allows inheritance.
|
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|
|
| pseudocode | Planning tool for
code using an English expression
or comment that describes the
action.
|
|
|
|
| Public | The access level
specifier that allows access from
all classes.
|
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|
|
| radio button | A control used
to indicate a value that may be
True or False (selected or not
selected). In any group of radio
buttons, only one button may be
selected.
|
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|
|
| Random class | Used to create
Random numbers.
|
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|
|
| ReadAllText method | A simple
method to read an entire text file
into a variable. The method opens
a file, reads the data, and closes
the file automatically
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|
|
| ReadLine method | Reads one
record from a file; reads to the end
of the line.
|
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|
|
| ReadOnly | A property that can be
retrieved but not set by external
classes; indicates that only a Get
method exists for the property.
|
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|
|
| record | A group of related
fields; relates to data files and
database tables.
|
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|
|
| Rectangle structure | Defines a
rectangular region, specified by its
upper-left corner and its size.
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|
|
| refactoring | Feature of some .NET
languages that can automatically
change the name and class of
variables and objects. VB provides
only for renaming variables.
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|
| remark | A Basic statement used
for documentation; not interpreted
by the compiler; also called a
comment.
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| resizing handle | See handle.
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|
| return value | Value returned
from a function.
|
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|
|
| reusability | Code modules
that can be used in multiple
projects.
|
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|
|
| RichTextBox | A specialized
form of a text box that allows
formatting of the Text property. If
an .rtf file is loaded into a
RichTextBox, the text appears
properly formatted.
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|
| row | A horizontal section of a
grid control.
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|
|
| run time | During the time a
project is executing.
|
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|
|
| run-time error | An error that
occurs as a program executes;
causes execution to break.
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|
|
| scope | The extent of visibility of
a variable or constant. The scope
may be namespace, module-level,
block, or local.
|
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|
| Scroll event | Scroll bar event
that occurs as the user moves the
scroll box.
|
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|
|
| Select Case | Selection
structure; can be used in place of
an If statement.
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|
|
| Select Resource dialog box | A
dialog box in which the image and
sound files of a project can be
added and selected.
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|
|
| SelectedIndex property | Index
of the item currently selected in a
list box or combo box.
|
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|
|
| separator bar | A horizontal line
used to separate groups of menu
commands.
|
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|
|
| SetBounds method | Sets the
location of a control; used to move
a control.
|
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|
|
| SetError method | Defines the
message and turns on the error
message for an ErrorProvider
control; used for validating input
data.
|
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|
|
| shared property | A property
that can be used by all objects of
the class; generally used for totals
and counts. Only one copy exists
for all objects of the class.
|
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|
|
| shared variable | One variable
that can be used by all objects of
the class; generally used for totals
and counts.
|
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|
|
| short circuit | Skipping the
evaluation of parts of a compound
condition that are not required to
determine the result.
|
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|
|
| shortcut menu | The menu that
pops up when the right mouse
button is clicked. Also called a
popup menu, context menu, or
right-mouse menu.
|
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|
|
| Show method | Displays a form
or message box. A form displayed
with the Show method is modeless.
|
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|
|
| ShowDialog method | Displays a
common dialog box or a form; the
form is displayed modally.
|
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|
| siblings | (XML) Elements at the
same level as each other.
|
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|
| signature | The name and
argument list of a method or
procedure.
|
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|
|
| simple combo box | Fixed-size
combo box.
|
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|
| simple list box | Fixed-size list
box.
|
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|
|
| Size structure | A size specified
by width and height; measured in
pixels.
|
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|
|
| SizeMode property | Allows the
size of an image in a picture box to
stretch.
|
|
|
|
| SmallChange property | Scroll
bar property for amount of move by
a click on an arrow.
|
|
|
|
| snap lines | Guidelines that pop
up on a form during design time to
help align the controls.
|
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|
|
| snippet | See code snippet.
|
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|
|
| solution | A Visual Basic
application; can consist of one or
more projects.
|
|
|
|
| Sorted property | Property
of a list box and combo box that
specifies that the list items should
be sorted.
|
|
|
|
| SoundLocation property | The
path of the sound file played by the
SoundPlayer component.
|
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|
|
| SoundPlayer component | A
component that allows the user to
play a sound file.
|
|
|
|
| splash screen | A window that
appears before the main application
window; generally displays
program information and gives
the appearance of quicker
application loading.
|
|
|
|
| Standard Edition | A version of
Visual Basic with fewer features
than the Professional and Team
System versions.
|
|
|
|
| stateless | Does not store any
information about its contents from
one invocation to the next.
|
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|
|
| Static | A local variable with a
lifetime that matches the module.
The variable retains its value as
long as the form is loaded.
|
|
|
|
| status bar | An area along the
lower edge of a window used to
display information for the user.
|
|
|
|
| StatusStrip control | A
container control that creates a
status bar across the lower edge
of a form.
|
|
|
|
| Step Into | Debugging command;
executes each statement, including
those in called procedures.
|
|
|
|
| Step Over | Debugging command;
executes each statement in the
main procedure but does not show
statements in called procedures.
|
|
|
|
| stream | An object used to
transfer a series of bytes from one
location to another.
|
|
|
|
| StreamReader | Object used to
input small amounts of information
stored in a disk file.
|
|
|
|
| StreamWriter | Object used to
write small amounts of information
to disk.
|
|
|
|
| StretchImage | Setting for the
value of the SizeMode property of a
PictureBox control.
|
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|
|
| string literal | A constant
enclosed in quotation marks.
|
|
|
|
| strongly typed | A feature of
VB that requires the programmer to
always be aware of the data type.
If you assign data to a wider type,
VB can implicitly (automatically)
convert for you; if you are
assigning data to a narrower type,
where precision or accuracy might
be lost, VB will generate a
compiler error.
|
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|
|
| structure | A grouping that
combines multiple fields of related
data.
|
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|
|
| sub procedure | A procedure
that performs actions but does not
return a value.
|
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|
|
| subclass | A derived class; also
called a child class.
|
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|
|
| submenu | A menu within a
menu.
|
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|
|
| subscript | The position of an
element within an array; also
called an index.
|
|
|
|
| subscripted variable | An
element of an array.
|
|
|
|
| superclass | A base class for
inheritance, also called a parent
class.
|
|
|
|
| syntax error | An error caused
by failure to follow the syntax rules
of the language; often caused by
typographical errors. The Editor
informs you of syntax errors.
|
|
|
|
| System.IO namespace | Holds
the stream objects for reading and
writing data files.
|
|
|
|
| TabIndex property | Determines
the order the focus moves as the
Tab key is pressed.
|
|
|
|
| table | A two-dimensional array.
|
|
|
|
| table adapter | An object that
handles retrieving and updating of
the data in a dataset.
|
|
|
|
| table lookup | Logic to find an
element within an array.
|
|
|
|
| TabStop property | Determines
if a control can receive focus.
|
|
|
|
| Team System Edition | The
version of Visual Studio with the
most features.
|
|
|
|
| text box | A control for data
entry; its value can be entered and
changed by the user.
|
|
|
|
| Text property | The value that
displays on a control such as the
words in a text box or label.
|
|
|
|
| TextAlign property | Used to
change the alignment of text within
the control.
|
|
|
|
| TextFieldParser | Object used to
read a delimited file and separate
it into its individual fields.
|
|
|
|
| Tick event | One firing of a
Timer component; each time the
interval passes, another Tick event
occurs.
|
|
|
|
| Timer component | Fires Tick
events at a specified time interval.
|
|
|
|
| ToLower method | Converts text
to lowercase letters.
|
|
|
|
| toolbar | The bar beneath the
menu bar that holds buttons; used
as shortcuts for menu commands.
|
|
|
|
| toolbox | A window that holds
icons for tools; used to create
controls and components on a
form.
|
|
|
|
| ToolStrip control | A container
control that creates a toolbar on a
form.
|
|
|
|
| ToolTip component | Placed
on a form to allow the individual
controls to display ToolTips. A
ToolTip property is added to each
control.
|
|
|
|
| Try/Catch block | Traps user
errors or program errors.
|
|
|
|
| user interface | The display and
commands seen by a user; how the
user interacts with an application.
In Windows, the graphical display
of an application containing
controls and menus.
|
|
|
|
| Using block | A group of
statements bounded by Using and
End Using; any variables declared
inside the block are not available
outside the block.
|
|
|
|
| validation | Checking to verify
that appropriate values have been
entered.
|
|
|
|
| validator controls | Controls
that can automatically validate
input data; used on Web Forms.
|
|
|
|
| value keyword | Incoming value
for a Set clause in a property
procedure.
|
|
|
|
| Value property | Holds the
current setting of a scroll bar
control.
|
|
|
|
| ValueChanged event | Event
that occurs when a scroll bar
control is scrolled.
|
|
|
|
| variable | Memory location that
holds data that can be changed
during project execution.
|
|
|
|
| vertical scroll bar | A Windows
control that provides a scroll bar
that appears vertically on the form.
|
|
|
|
| Visible property | Determines if
a control can be seen or not.
|
|
|
|
| visual inheritance | Inheritance
of the visual elements of a form.
|
|
|
|
| Web page | A static page
consisting of HTML elements;
displayed in a browser application.
|
|
|
|
| WebBrowser control | Displays
Web pages on a Windows form.
|
|
|
|
| With block | The lines of code
between a With and End With
statement.
|
|
|
|
| WordWrap property | Boolean
property that allows text to wrap to
a second line. Multiline property
must also be set to True.
|
|
|
|
| Write method | Writes one
record to a stream object; does not
include a carriage return.
|
|
|
|
| WriteAllText method | A
simple method to write a text file.
The method opens a file, writes the
data, and closes the file
automatically.
|
|
|
|
| WriteLine method | Writes one
record to a stream object; includes
a carriage return character at
the end.
|
|
|
|
| XAML | Extensible Application
Markup Language.
|
|
|
|
| XAML Browser Application (XBAP) | A WPF application
that runs in a browser. The user
interface is created using XAML.
See Extensible Application Markup
Language.
|
|
|
|
| XML | Extensible markup
language. A format for data;
popular for data storage and
transfer on the Internet.
|