How can I compare a date in C# to "1/1/0001 12:00:00 AM")

You can use DateTime.MinValue, which has exactly the same value:

if (e.CreatedDate == DateTime.MinValue)

To check if it equals the default, you can use the default keyword:

if (e.CreatedDate == default(DateTime))

"1/1/0001 12:00:00 AM" this is a string datatype. so convert it to DateTime.

if (e.CreatedDate == Convert.ToDateTime("1/1/0001 12:00:00 AM"))
{
    //--- To Dos
}

But .NET Framework provide a default way to check this using

if (e.CreatedDate.Equals(DateTime.MinValue))

MSDN

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