If you know how many times it needs to be repeated (even if the number will come from a variable) you will use a fixed loop (For…Next).
If you don’t know how many times it needs to be repeated you will use a conditional loop (Loop Until or Do While).
If using a conditional loop, you’ll need to work out what will make the loop stop and create a suitable condition.
For...Next loops increment by 1 with each iteration but this can be changed using the Step keyword.
Example - For...Next
show
| VB code |
Pseudocode |
Output |
For counter = 1 To 5
lstOutput.Items.Add (counter)
Next |
FOR counter FROM 1 TO 5
SEND counter TO DISPLAY
END FOR |
1
2
3
4
5 |
Example - For...Next
show
| VB code |
Pseudocode |
Output |
For counter = 5 To 1 Step -1
lstOutput.Items.Add (counter)
Next |
FOR counter FROM 5 TO 1
SEND counter TO DISPLAY
END FOR |
5
4
3
2
1 |
Example – Loop Until
show
| VB code |
Pseudocode |
counter=0
Do
Stuff to be repeated goes here
counter=counter+1
Loop Until counter=10 |
SET counter TO 0
REPEAT
Stuff to be repeated goes here
SET counter TO counter+1
DO LOOP UNTIL counter=10 |
| VB code |
Pseudocode |
counter=0
Do While counter<10
Stuff to be repeated goes here
counter=counter+1
Loop |
SET counter TO 0
WHILE counter<10 DO
Stuff to be repeated goes here
SET counter TO counter+1
END WHILE |