How to convert a Generic List to an Array?

1.The method ToArray() returns an array of Student objects;

2.If you need an array of integer with the ID of the students, you have to iterate your first list and create a list of IDs, then to use ToArray() on this 2nd list, like in example bellow:

List<student> studIDList = handler.GetStudentIDList();
List<int> idList= new List<int>;
foreach(student item in studIDList)
{
  idList.Add(item.ID); //Here you should use the property used for student ID!
}
//
int[] studID = idList.ToArray();

In addition to Solution 2:
The iteration is made in one line using the method already implemented in the class System.Collections.Generic.List<>:
http://msdn.microsoft.com/en-us/library/73fe8cwf%28v=vs.110%29.aspx[^].

—SA