Predicate Delegate with Example in C# with List<T>.Find

The below codesnippet will show how to use Predicate delegate with a generic list(List<T>).

See the comments in code to know more about the code.

static string test = "";

public static void Main()
{
   // Create an List of five strings. 
   List empList = new List();
   empList.Add("Sam");
   empList.Add("Bob");
   empList.Add("Steve");
   empList.Add("Mark");
   empList.Add("Frank");

   // Create a global variable to be used by the delegate function.
   // This would not be necessary if you want to hard code test
   // condition in function.
   test = "Mark";
   string first = empList.Find(new Predicate(SearchList));

   // Note that you ca n use an Anonymous call to define the condition.
   test = "Steve";
   string next = empList.Find(delegate(string t) 
                        { 
                              if (t.CompareTo(test) == 0) return true;
                              return false; });

   // Display the first structure found.
   Console.WriteLine(first); 
   Console.WriteLine(next);
}
// This method implements the test condition for the Find method.
private static bool SearchList(string t)
{
   if (t.CompareTo(test) == 0)
   {
      return true;
   }
      return false;
   }
}