Using a CASE statement to test multiple conditions

When you have more than two conditions to test, it can often be beneficial to use a CASE statement for better code readability.

How to do it...

1. Create a new codeunit from Object Designer.

2. Add the following global variables:

   Name	Type
   I	Integer

3. Add the following code to the OnRun trigger of your codeunit:

   i := 2;
   CASE i OF
   1:
   MESSAGE('Your number is %1.', i);
   2:
   MESSAGE('Your number is %1.', i);
   ELSE
   MESSAGE('Your number is not 1 or 2.');
   END;
   

4. When you run the codeunit you will see a window like the following screenshot:

   

How it works...

A CASE statement compares the value given, in this case "i", to various conditions contained within that statement. Each condition, other than the default ELSE, is followed by a colon. Here it checks if "i" is equal to 1, if "i" is equal to 2, and if "i" is neither 1 nor 2. You would get the same result if you wrote the following code:

IF i = 1 THEN
MESSAGE('Your number is %1.', i)
ELSE IF i = 2 THEN
MESSAGE...