Question

I have a util class like this:

public class Util
{
  static public List<Person> PersonList{get;set;}
}

I want add Item to my list in Main method like this:

void Main()
{
    Util.PersonList.Add(new Person{ Name="A" });  
}

But it impossible …PersonList is null?

Answer 1

Add static constructor to your static class

public class Util
{
  static Util()
  {
     PersonList = new List<Person>();
  }
  static public List<Person> PersonList{get;set;}
}