troubleshooting Question

In C#, how to access base class variable from child class?

Avatar of Peter Pang
Peter Pang asked on
.NET ProgrammingC#
9 Comments3 Solutions3528 ViewsLast Modified:
In C#, how to access base class variable from child class?

e.g.
Base Class
   class TestBase
    {
        protected int a;

        public TestBase(int i)
        {
            a = i;
        }

        protected TestBase()
        {

        }

        public void Update(int i)
        {
            a = i;

            TestChild child = new TestChild();
            child.Update("Hello World ");
        }

    }

ChildClass
   class TestChild:TestBase
    {
        private string msg;
        public void Update (string s)
        {
            msg = s+ a.ToString();
            Console.WriteLine(msg);

        }
    }

Calling
       private void btnTest_Click(object sender, EventArgs e)
        {
            TestBase t = new TestBase(1);
            t.Update(100);

        }

Result
Hello World 0

Problem
I was hoping to get Hello World 100.
How to get child class to access base class variable, in this case int a ?
ASKER CERTIFIED SOLUTION
AndyAinscow
Freelance programmer / Consultant

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