Extending Microsoft Dynamics 365 for Operations Cookbook

How to do it...

To create a handler class to add further validation to the state machine, follow these steps:

1. Open the ConWHSVehicleInspStatusHandler class and add the following piece of code:

public ConWHSVehInspStatus fromStatus; public ConWHSVehInspStatus toStatus; public ConWHSVehicleTable vehicle; public boolean Validate() {     switch (toStatus)     {         case ConWHSVehInspStatus::Complete:             if (vehicle.InspComment == '')             {                 DictField field = new DictField(                     tableNum(ConWHSVehicleTable),                     fieldNum(ConWHSVehicleTable,                               InspComment));                 //The field %1 must be filled in"                 return checkFailed (strFmt(                                 "@SYS110217",                                  field.label()));             }             break;     }     return true; } public void run() {     if(toStatus == fromStatus)     {         return;     }  if(this.Validate()) ...