I can't get value of base class field from child class object in c#

Question

using System;
public class Program
{
    public static void Main()

         CloudCollectionHelper cloudHelper = new CloudCollectionHelper();
         SlackHelper slackHelper = new SlackHelper();
        cloudHelper.DatabaseID=12345;
        Console.WriteLine(slackHelper.GetSlackPageTokens());
    }
    class CloudCollectionHelper
    {
        public  long DatabaseID { get; set; }
    }
    class SlackHelper:CloudCollectionHelper
    {

        public long GetSlackPageTokens()
        {
            return DatabaseID;
        }
    }
}

current output: 0 Expected Output: 12345

 

I need output 12345 because DatabaseID from the cloudhelper so i need that databaseID in the slackhelper.

 

this is my c# online compiler: https://dotnetfiddle.net/QNQeEX

 

I dont want to write something below because I have 1000+ field in the cloudhelper

SlackHelper slackHelper = new SlackHelper();
slackHelper.DatabaseID=12345;
Console.WriteLine(slackHelper.GetSlackPageTokens());

Thanks in advance.

Answer 1

your code should be like below

public static void Main()
       {


           SlackHelper sh = new SlackHelper();

           Console.WriteLine(sh.GetSlackPageTokens());
           Console.ReadLine();
       }


 public  class CloudCollectionHelper
   {
       public  long DatabaseID { get; set; }
   }
 public  class SlackHelper:CloudCollectionHelper
   {

       public long GetSlackPageTokens()
       {
           DatabaseID = 12345;
           return DatabaseID;
       }
   }

 

Answer 2

Hi Talaviya,

Try this code:

 

class Vehicle  // base class (parent)
{
  public string brand = "Ford";  // Vehicle field
  public void honk()             // Vehicle method
  {
    Console.WriteLine("Tuut, tuut!");
  }
}

class Car : Vehicle  // derived class (child)
{
  public string modelName = "Mustang";  // Car field
}

class Program
{
  static void Main(string[] args)
  {
    // Create a myCar object
    Car myCar = new Car();

    // Call the honk() method (From the Vehicle class) on the myCar object
    myCar.honk();

    // Display the value of the brand field (from the Vehicle class) and the value of the modelName from the Car class
    Console.WriteLine(myCar.brand + " " + myCar.modelName);
  }
}