using System;
using System.Collections.Generic;
using System.Diagnostics;
namespace Logging
{
class Person
{
static int
runningID = 0;
public int Id { get; private set; } =
runningID++;
public string Name { get; set; }
public Person(string Name) { this.Name = Name; }
public override string
ToString() { return string.Format($"{Id} {Name}"); }
}
class Program
{
static void Main(string[] args)
{
if (!EventLog.SourceExists("Person Maker"))
EventLog.CreateEventSource("Person Maker", "Application");
int selection = -1;
var people = new Dictionary<int, Person>();
do
{
do Console.WriteLine("1) Add Person\n2) Remove
Person\n" +
"3) list People\n0) Exit");
while (!int.TryParse(Console.ReadLine(), out selection));
switch (selection)
{
case 1:
var p = CreatePerson();
people.Add(p.Id, p);
break;
case 2:
RemovePerson(people);
break;
case 3:
ListPeople(people);
break;
}
} while (selection != 0);
}
public static Person CreatePerson()
{
Console.WriteLine("enter in a persons first Name");
string fname = Console.ReadLine();
var p = new Person(fname);
var m = $"create person {p.ToString()}";
EventLog.WriteEntry("Person Maker", m, EventLogEntryType.Information, 1001);
return p;
}
public static bool RemovePerson(Dictionary<int, Person> people)
{
string LogMsg = string.Empty;
int logID = -1;
var logType = EventLogEntryType.Information;
try
{
if (people.Count > 0)
{
foreach (var p in people)
Console.WriteLine($"{p.Key} {p.Value.ToString()}");
int key;
Console.WriteLine("Enter in the id of the person to delete");
string keySTR = Console.ReadLine();
if (int.TryParse(keySTR, out key))
{
if (people.ContainsKey(key))
{
people.Remove(key);
LogMsg = "deleted form list id " + key;
logID = 1001;
logType = EventLogEntryType.Information;
return true;
}
LogMsg = "Couldn't delete form list, no such key: " + key;
logID = 1002;
logType = EventLogEntryType.Error;
}
else
{
LogMsg = "Couldn't delete form list, not a valid key: " + keySTR;
logID = 1002;
logType = EventLogEntryType.Error;
}
}
else
{
LogMsg = "Couldn't delete form list, list is empty";
logID = 1001;
logType = EventLogEntryType.Information;
}
return false;
}
finally
{
EventLog.WriteEntry("Person Maker", LogMsg, logType, logID);
}
}
public static void ListPeople(Dictionary<int, Person> people)
{
if (people.Count > 0)
foreach (var p in people)
Console.WriteLine(p.Value.ToString());
else
EventLog.WriteEntry("Person Maker",
"Listed People",
EventLogEntryType.Information, 1002);
}
}
}
now if we run the above, more or less very similar to our previous example with the tracing
