how to call Entity from code in D365

HOW TO CALL AN ENTITY FROM CODE

There are many scenarios in which the deleloper wants to test whetther the entity is working or not .

1) one way is via the DMF 

2) other one is via the code.

Below is the code used to test an entity directly from the code.

This is for D365 FnO.

1. Copy and paste the following code into the class to test your data entity.

   X++

   public static void main(Args _args)
   {
       FMLabCustomerEntity customer;
       str license = "License";
       Random r = new Random();
       int rand = r.nextInt();
       license = license + int2str(rand);
   
       //Create a new record in FM lab customer entity
       customer.clear();
       customer.FirstName = "Bob";
       customer.LastName = "Smith";
       customer.DriverLicense = license;
       customer.insert();
   
       info(strfmt("Tried to insert customer '%1 %2' with license %3", 
           customer.FirstName, customer.LastName, customer.DriverLicense));
   
       //Display newly created record
       select forupdate customer where customer.DriverLicense==license;
       info(strfmt("Found newly created customer '%1 %2' with license %3", 
           customer.FirstName, customer.LastName, customer.DriverLicense));
   
       //Now delete the record from the entity
       customer.delete();
       select customer where customer.DriverLicense==license ;
       info(strfmt("Deleted customer does not exist: license- %1", customer.DriverLicense));
   }
   

2. In the above code you can ignore the license part for your entity .

3. Run the code in debugger to set it as a startup object.

4. To validate the entity, view the Infolog in the debugger window or in notifications on the website. You will see that three successful messages are logged. You will also see the actions that were taken.

Above content is taken from https://docs.microsoft.com/

Thanks,

Vikas Mehta.