C# – Windows Event Log – how to register an event source

cnet

I am creating a new event source and logging a message using the code below:

    static void Main(string[] args)
    {
        if (!EventLog.SourceExists("My Log"))
        {
            EventLog.CreateEventSource("My Application", "My Log");
            Console.WriteLine("Created new log \"My Log\"");
        }

        EventLog myLog = new EventLog("My Log");
        myLog.Source = "My Application";
        myLog.WriteEntry("Could not connect", EventLogEntryType.Error, 1001, 1);
    }

A custom event log with the name "My Log" is created (as expected) but the message is logged below the "Application" node. What am I doing wrong?

Best Answer

There's the following note in MSDN:

If a source has already been mapped to a log and you remap it to a new log, you must restart the computer for the changes to take effect.

Is it possible while trying out the code that you previously tried writing to the Application log and you now need to reboot for it to "unmap" that link?

Related Solutions

C# – How to calculate someone’s age based on a DateTime type birthday

An easy to understand and simple solution.

// Save today's date.
var today = DateTime.Today;

// Calculate the age.
var age = today.Year - birthdate.Year;

// Go back to the year in which the person was born in case of a leap year
if (birthdate.Date > today.AddYears(-age)) age--;

However, this assumes you are looking for the western idea of the age and not using East Asian reckoning.

C# – How to cast int to enum

From an int:

YourEnum foo = (YourEnum)yourInt;

From a string:

YourEnum foo = (YourEnum) Enum.Parse(typeof(YourEnum), yourString);

// The foo.ToString().Contains(",") check is necessary for enumerations marked with an [Flags] attribute
if (!Enum.IsDefined(typeof(YourEnum), foo) && !foo.ToString().Contains(","))
{
    throw new InvalidOperationException($"{yourString} is not an underlying value of the YourEnum enumeration.")
}

Update:

From number you can also

YourEnum foo = (YourEnum)Enum.ToObject(typeof(YourEnum) , yourInt);

Best Answer

Related Solutions

C# – How to calculate someone’s age based on a DateTime type birthday

C# – How to cast int to enum

Related Topic