repeat...until
InstallShield 2022 » InstallScript Language Reference
The repeat statement is analogous to the do...while loop in the C language. It also is very similar to the InstallScript while statement.
There are two main differences between repeat and while in InstallScript:
| • | The repeat statement must loop at least once. A while statement might not loop at all. |
| • | A while statement terminates when the expression evaluates as false. A repeat statement terminates when the expression evaluates as true. |
To create a repeat loop:
| 1. | Set the variable you will be using in the conditional test as you would for a while loop. |
| 2. | Type repeat on its own line with no punctuation. |
| 3. | Build the operation(s) that you want repeated. |
| 4. | Add the operation that changes the test variable (for example, nCount = nCount + 1, or nCount = SomeVariable). |
| 5. | End the loop with an until statement containing the conditional test in parentheses. |
The following example demonstrates repeat loop syntax:
nCount = 1;
repeat
MessageBox("Count is less than 5", INFORMATION);
nCount = nCount + 1;
until (nCount = 5);
Note:You cannot define a label within the repeat statement.
See Also