Okay, Visual Basic.. what an application. Its so simple to get programs up and running (usually a point, click, drag, type and run =D).

Variables
Variables in VB are declared with the dimension keyword..

Code

Dim variable_name as string

..also you will notice that after the "Dim", then the name there is an "as string" statement. This means that the variable that I declared is of variable type string. This is basically some text. Some other variable types include integer, double, currency, boolean, etc.

Conditionals
The IF statement can help you tell if the a value is equal to something, or not.

Code

Dim Number as integer Number = 435 If Number > 10 Then msgbox.show("The number is greater than 10!") ElseIf Number < 10 Then msgbox.show("The number is less than 10!") Else msgbox.show("The number is 10!") End If

Looping
If you want something to get done more than one time in visual basic, or any other programming language for that matter.. you will need to loop. There are different types of loops: DO WHILE, DO UNTIL and FOR.

Code

Dim current As Integer Dim max As Integer current = 0 max = 100 Do While current <= max lblResult.Caption = lblResult.Caption & " " & Str(current) current = current + 1 Loop

Code

Dim current As Integer Dim max As Integer current = 0 max = 100 do lblResult.Caption = lblResult.Caption & " " & Str(current) current = current + 1 loop until current <= max

You may think that there is not really any difference between the two loops above, but one fundamental difference is that the second loop will execute the code atleast once before the condition is checked.

The final loop is the FOR loop, and it goes a little something like this..

Code

Dim current As Integer Dim max As Integer max = 100 For current = 1 to max lblResult.Caption = lblResult.Caption & " " & Str(current) next

..and thats it for the basics of Visual Basic! Enjoy!

discuss this topic to forum