当前上下文中不存在如何解决名称“名称”和“值”的问题

Question

I am new to C#, and I am halfway throught a task in which we have to create Counter class and use it to create and work with Counter objects. I have run into an error that I can't resolve The name 'Name' & 'Value' do not exist in the current context.

I have to tell Console, to WriteLine with the format "{0} is {1}", and the result of asking c for its Name, and the result of asking c for its Value.

I have a feeling it has something to do with the scope of Name and Value but after multiple attempts I still can't figure out where I am going wrong

File name Program.cs

namespace CounterTest
{
   public class MainClass
    {
        private static void PrintCounters(Counter[] counters)
        {
            foreach ( Counter c in counters) 
            {
                Console.WriteLine("Name is: {0} Value is: {1}", Name, Value);
            } **** Where I am receiving the error                ^      ^

        }
       public static void Main(string[] args)
        {

        }
    }
}

File name Class1.cs

namespace CounterTest
{
    public class Counter
    {
        private int _count;
        public int Value
        {
            get
            {return _count;}
        }
        private string _name;
        public string Name
        {
           get
            {return _name;}
            set
            { _name = value; }
        }

        public Counter(string Name)
        { _name = Name;
          _count = 0;}

        public void Increment()
        {
            _count = _count + 1; 
        }
        public void Reset()
        {
            _count = 0;
        }
    }
}

Thank you for any help you are able to provide.

Answer 1

Change

Console.WriteLine("Name is: {0} Value is: {1}", Name, Value);

To

Console.WriteLine("Name is: {0} Value is: {1}", c.Name, c.Value);

You can also use string interpolation which is available in C# 6 or higher as:

Console.WriteLine($"Name is: {c.Name} Value is: {c.Value}");

Answer 2

The problem is that you don't specify in code where "Name" and "Value" come from and that's why you get that error.

foreach ( Counter c in counters) 
{
    Console.WriteLine("Name is: {0} Value is: {1}", Name, Value);
}

In foreach cycle you take a single "c" element from "counters" array. Afterwards you should specify that "Name" and "Value" are properties of "c" by writing "c.Name" and "c.Value".

Answer 3

Since using a foreach loop, you can easily use the object properties easily by using the dot operator

for example

  foreach ( Counter c in counters) 
        {
            Console.WriteLine("Name is: {0} Value is: {1}", c.Name, c.Value);
        } 

or You can use string interpolation for better readability

foreach ( Counter c in counters) 
        {
            Console.WriteLine($"Name is: {c.Name} Value is: {c.Value}");
        }