Validating data

It is important to make sure that the data being placed into the fields is correct. Many of the checks done to the data can be performed using the field's properties, but in some instances you will need to write code to do very specific data validation. Here we will show you where that code should go and what can be done there.

Getting ready

You will need the customer card from the Creating transactions to alter data recipe.

How to do it...

1. Create a new codeunit from Object Designer.

2. Add the following global variable:

   Name	Type	Subtype
   Customer	Record	Customer

3. Add the following code to the OnRun trigger:

   Customer.SETCURRENTKEY(Name);
   Customer.SETRANGE(Name, 'Alex Traxinger');
   IF Customer.FINDFIRST THEN BEGIN
   Customer."Search Name" := '';
   Customer.VALIDATE(Name, 'Matt Traxinger');
   Customer.MODIFY;
   END;
   

4. Save and close the codeunit.

How it works...

Most of the code in our example is to find and save a record. We're going to look at the following lines:

Customer."Search Name...