Building an object with a [] interface ( not from ILIst) in c#

I want to pass around some values in an array that will always be a known size. I would like to define a class that represents this array of decimal values which could not be resized, would always have the same number of elements, and supports the [] array notation.

In c++ I could do an operator overloading for this - but I can开发者_StackOverflow中文版't see how to do it in c#

To be clear - the use of the class would be something like:

MyValues values = new MyValues;
values[3] = 14;
values[7] = 10

.... And later

decimal aValue = values[2];

Suggestions?

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You need to write an indexer, like this:

public decimal this[int index] {
    get { return data[index]; }
    set { data[index] = value; }
}

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Use an indexer

public class MyValues {
    private readonly decimal[] numbers = new decimal[10];

    public decimal this[int index] {
        get { return numbers[index]; }
        set { numbers[index] = value; }
    }
}

You might want to add some bounds checking to provide better failiure messages. Also you probably do not want to hard code the array size.

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Using an indexer, you could write a simple generic class like:

    public class FixedArray<T>
    {
        private T[] array;

        public int Length { get { return array.Length; } }

        public FixedArray (int size)
        {
            array = new T[size];
        }

        public T this[int index]
        {
            get { return array[index]; }
            set { array[index] = value; }
        }
    }

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something like:

decimal this[int ind]
{
   get
   {
      return array[ind];
   }
   set
   {
      array[ind] = value;
   }
}

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Try ReadOnlyCollection class. Also be aware of the dangers of arrays, really good article here