add department sql join query, alter person model to fit department data

Database.cs

@@ -16,13 +16,13 @@ namespace it_projekt
             {
                 connection.Open();
 
-                string sql = "SELECT * FROM stammdaten";
+                string sql = "SELECT stammdaten.id, stammdaten.firstname, stammdaten.lastname, stammdaten.creationdate, abteilung.kuerzel, abteilung.name FROM `stammdaten` JOIN abteilung GROUP BY stammdaten.id; ";
                 MySqlCommand cmd = new MySqlCommand(sql, connection);
                 MySqlDataReader rdr = cmd.ExecuteReader();
                 Persons = new List<Person>();
                 while (rdr.Read())
                 {
-                    Person p = new Person(rdr[0].ToString(), rdr[1].ToString(), rdr[2].ToString(), DateTime.Parse(rdr[3].ToString()));
+                    Person p = new Person(rdr[0].ToString(), rdr[1].ToString(), rdr[2].ToString(), DateTime.Parse(rdr[3].ToString()), rdr[4].ToString(), rdr[5].ToString());
                     Persons.Add(p);
 
                 }

Form1.cs

@@ -41,7 +41,7 @@ namespace it_projekt
             }
             foreach (Person person in db.Persons)
             {
-                this.dataGrid.Rows.Add(person.Id, person.Firstname, person.Lastname, person.CreationDate, false);
+                this.dataGrid.Rows.Add(person.Id, person.Firstname, person.Lastname, person.department_short, person.department_long, person.CreationDate, false);
             }
         }
 

Person.cs

@@ -12,17 +12,21 @@ namespace it_projekt
         public string Lastname { get; set; }
         public string Firstname  { get; set; }
         public DateTime CreationDate { get; set; }
+        public string department_short { get; set; }
+        public string department_long { get; set; }
 
         public Person()
         {
 
         }
-        public Person(string Id, string Lastname, string Firstname, DateTime CreationDate) 
+        public Person(string Id, string Lastname, string Firstname, DateTime CreationDate, string department_short, string department_long) 
         { 
             this.Id = Id;
             this.Lastname = Lastname;
             this.Firstname = Firstname;
             this.CreationDate = CreationDate;
+            this.department_short = department_short;
+            this.department_long = department_long;
         }
     }
 }