Creating a function

Most programs will need to execute code from different NAV objects. This code is contained in functions. This recipe will show you how to create a function and explain what functions are in more detail.

How to do it...

1. Create a new codeunit from Object Designer.

2. Add a function called CountToN that takes an integer parameter, n.

3. Add the following local variables

   Name	Type
   I	Integer

4. Add the following code to your function:

   FOR i := 1 TO n DO
   MESSAGE('%1', i);
   

5. Add the following code to the OnRun trigger of the codeunit:

   CountToN(3);
   

6. Save and close the codeunit.

7. When you run the codeunit you will see several windows like the following screenshot:

   

How it works...

By creating a function we can reference multiple lines of code using one easy-to-understand name. Our function is called CountToN and takes an integer "n" as a parameter. This function will display a message box for every number ranging between one and the number that is passed to the function.

There's more...

Proper...