Using of unassinged local variable

[Kargan]

Jeg fatter ikke hvorfor jeg får "Using of unassinged local variable", variablen blir jo deklarert. Det er denne linjen som ikke funker: rd.Value = rapidBool;

 

Noen tips ?

using System;
using ABB.Robotics.Controllers;
using ABB.Robotics.Controllers.Discovery;
using ABB.Robotics;


class Program{
       
        static void Main(string[] args){
            NetworkScanner scanner = new NetworkScanner();

            //Controller _controller;
            //Controller controller = null;
            scanner.Scan();

            ControllerInfoCollection controllers = scanner.Controllers;

            foreach (ControllerInfo controllerInfo in controllers){
                Console.WriteLine("IPAddress: " + controllerInfo.IPAddress.ToString()+"\n");
                Console.WriteLine("System Name : " + controllerInfo.SystemName + "\n");
                Console.WriteLine("Controller Name: " + controllerInfo.ControllerName + "\n");
            }
            Console.WriteLine("SystemID : " + scanner.Controllers[0].SystemId);
            Controller _controller = new Controller(scanner.Controllers[0].SystemId);
            _controller.Logon(UserInfo.DefaultUser);

            Mastership m = Mastership.Request(_controller.Rapid);

          
            ABB.Robotics.Controllers.RapidDomain.RapidData rd = _controller.Rapid.GetRapidData("T_ROB1", "MainModule", "flag");
            ABB.Robotics.Controllers.RapidDomain.Bool rapidBool;

            //test that data type is correct before cast
            if (rd.Value is ABB.Robotics.Controllers.RapidDomain.Bool)
            {
                rapidBool = (ABB.Robotics.Controllers.RapidDomain.Bool)rd.Value;
                //assign the value of the RAPID data to a local variable
                bool boolValue = rapidBool.Value;
            }
            Console.WriteLine("RAPID \"running bool\" : "+ rd.Value.ToString());

            //Assign new value to .Net variable
            rapidBool.Value = false;
            //Request mastership of Rapid before writing to the controller

            //Change: controller is repaced by aController
            rd.Value = rapidBool; //Denne lager problemer for meg
            //Release mastership as soon as possible

            Console.WriteLine("Is Master : " + m.IsMaster);
            m.Dispose(); //Kobler fra kontroller
            Console.WriteLine("Is master : " + m.IsMaster);
            Console.ReadLine();
        }
}

Endret 15. september 2013 av Kargan

[Hårek]

Du tildeler rapidBool.Value uten å lage objektet rapidBool.

 

ABB.Robotics.Controllers.RapidDomain.Bool rapidBool; - dette forteller hva slags objekt rapidBool er, men det er ikke laget noe objekt.

 

rapidBool = new ABB.Robotics.Controllers.RapidDomain.Bool - dette ville lage objektet.