GNVQ Intermediate IT Optional Unit5
 

Tutors Sue Cahill and Colin Duley



GNVQ IT Intermediate - Visual Basic Notes 1

A Visual Basic program is created in 5 stages:

1. Creating a new form, which will be the interface between the user and the program. The form will hold the various controls.  A program must have at least one form and more complex programs can have several.

2. Attaching controls to the form. Controls are selected from the toolbox and drawn in the size and position that you, the programmer, require.

3. Setting the “properties” of the controls. These properties decide the initial appearance of the control and can govern how it works.

4. Writing code.  You will write code to respond to the events associated with the controls.

5. Testing the program. The program is tested thoroughly and errors or bugs eliminated. A final working .EXE file will be produced.
 

Below are listed some of the controls and what they can be used for.
Control name Use Example
Label
Display a message
“Please enter your name”
Text Box
Allow a user to enter data
Respond to a request as above
Command Button
Click for action
OK, Exit, Yes, No
Image Box
Display a graphic
Put a picture or drawing on your form
Option Button
Choose one from several options
Choosing character size
Check Box
Select one or more option from a set
Setting options on or off


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