c# - I can't display my array that I have populated through form1Load. Will run without errors but wont run -

public partial class form1 : form        {      datetime[] birth = new datetime[20];     person[] people = new person[20];      public form1()     {         initializecomponent();     }      private void form1_load(object sender, eventargs e)     {                    // create class person following fields _firstname, _lastname, _birthdate(datetime type) add constructor, properties (get only) , method getage returns age (int) of person.          // in form1, create array of person objects hold 20 people         // in form1_load: populate array 20 person objects          // add gui display people in list (first , last names, birthdate, , age         // add gui          //people[0] = new person("john","stockton", datetime.)          string[] first = new string[20] { "scott", "ramona", "todd", "melissa", "naomi", "leland", "conor", "julie", "armondo", "leah",                                           "frank", "peter", "ila", "mandy", "sammy", "gareth", "garth", "wayne", "freddy", "mark" };          string[] last = new string[20] { "kennedy", "kennedy", "kennedy", "kennedy", "kennedy", "kennedy", "carrel", "maloythebeautiful", "johnson", "smith",                                           "sinatra", "clemens", "eels", "johnson", "eels", "thompson", "brooks", "world", "crugar", "thomas" };          birth[0] = new datetime(1987, 22, 7);         birth[1] = new datetime(1962, 15, 9);         birth[2] = new datetime(1984, 21, 4);         birth[3] = new datetime(1977, 24, 1);         birth[4] = new datetime(1983, 12, 8);         birth[5] = new datetime(1979, 14, 1);         birth[6] = new datetime(1965, 19, 9);         birth[7] = new datetime(1968, 21, 2);         birth[8] = new datetime(1980, 22, 7);         birth[9] = new datetime(1982, 20, 7);         birth[10] = new datetime(1984, 19, 4);         birth[11] = new datetime(1968, 11, 9);         birth[12] = new datetime(1968, 21, 8);         birth[13] = new datetime(1975, 5, 2);         birth[14] = new datetime(1945, 15, 3);         birth[15] = new datetime(1969, 14, 6);         birth[16] = new datetime(1987, 141, 4);         birth[17] = new datetime(1976, 23, 5);         birth[18] = new datetime(1989, 28, 6);         birth[19] = new datetime(1988, 23, 9);                  // populate array person[] people = new person[20];            (int = 0; < people.length; i++)         {             people[i]= new person(first[i], last[i], birth[i]);         }      }      private void btndisall_click(object sender, eventargs e)     {         try         {             (int = 0; < people.length; i++)             { 

this need displaying array have populated through form1 load

                displaymessage("name: " + people[i].firstname + people[i].lastname + " birthdate: " + people[i].birthdate.year + people[i].birthdate.day + people[i].birthdate.month +  "\n\n");                 //richtxtdisplay.appendtext(people[i].tostring());                 //richtxtdisplay.appendtext(people[i].firstname + people[i].lastname + people[i].birthdate + "\n");             }         }         catch         { }     }      private void btngetage_click(object sender, eventargs e)     {         int birth = int.parse(textbox1.text);      }     public void displaymessage(string message)     {         // void method         messagebox.show(message);     }     public void displayrichtxtmessappendtext(string message)     {         // void method         richtxtdisplay.appendtext(message);     } } 

and class person..

 public class person  {          private string _firstname;         private string _lastname;         private datetime _birthdate;          public person(string firstname, string lastname, datetime birthdate)         {            _firstname = firstname;            _lastname = lastname;            _birthdate = birthdate;         }         public string firstname         { { return _firstname; } }          public string lastname         { { return _lastname; } }          public datetime birthdate         { { return _birthdate; } }          public int getage()         {             timespan ts =                 datetime.now - _birthdate;             int year = (int)ts.totaldays / 365;             return year;          }         public int daysuntillbirthdate()         {             int age = getage();             datetime proximobirthday = _birthdate.addyears(age + 1);             timespan ts = proximobirthday - datetime.now;              return ts.days;         }         }   

i have labeled displaying array first names, last names , birth date. don't have errors , won't show , can click button display many times , won't break code. can't remember format exemption use try catch should work enough.

your initializing date wrong

new datetime(1987, 22, 7); // month can't 22!  

format should year, month , day.

this not work, correct that. issue.

here constructor signature of datetime

public datetime(int year, int month, int day);