Using delegates in C#

Question

In C# language and .NET framework, could you help me with understanding delegates? I was trying to check some code, and found that the results I received were unexpected for me.

Answer 1

You need to pass in I to your function so that I.ToString() can be executed at the appropriate time (instead of at the time function is created).

class Program
{
    public static int I = 0;

    static Func del = num => num.ToString();

    static void Main(string[] args)
    {
        I = 10;
        Console.WriteLine("{0}", del(I));
    }
}