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Dynamics 365 Community / Forums / Finance forum / what's the differe...
Finance forum

what's the difference between validate field method and modified method in D365FO?

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Posted on by junior AX 1,552

Hello!

Both methods are called whenever u change a field value. So what's the difference between them and when should i use each one?

  • Suggested answer
    Mea_ Profile Picture
    Mea_ 60,286 on at

    Hi junior AX,

    They have different purpose. In validate field you should write logic that validates data entered. In modified you update other fields or perform other actions that should happen when field is modified, however, you don't validate data and relay on  validate method. 

  • junior AX Profile Picture
    junior AX 1,552 on at

    Hi ievgen Miroshnikov,

    what do u mean by the last sentence : you don't validate data and relay on validate method?

    plus do u mean modified method can't be used if i want to do actions on the same field only on other fields?

  • Mea_ Profile Picture
    Mea_ 60,286 on at

    I mean they have their own responsibilities: validate only validates and does not modify anything, modify usually only change related fields but does not do validation, it should be done in validate field method.

    In modify field you can change any data you need, but be aware that you should not update data in the database, because user should be able to revert changes by clicking "Esc" and existing form without saving any changes. And if  you update data in other tables it would be misleading for the user and "unrevertable".

  • Omar Abdelhamed Dev Profile Picture
    Omar Abdelhamed Dev 105 on at

    ValidateField

    It is executed when we move the cursor from one field to another one. i.e ValidateField () fires every time the user changes the value in a field.

    ValidateWrite

    It is executed before inserting or updating a registry in the table. The validateWrite() method validates that each mandatory field is filled in.

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