Question

0000-00-00 00:00:00

i have this date in mysql as default date in undefined case

how i can get them in c# and re insert them without changes in MysqlDatabase.

if i get them in c#. i got error that Unable to convert MySQL date/time value to System.DateTime

how i can get this in c# and insert them without any changes in date

Answer 1

Use Nullable types and the as operator to represent your datetime values in C#. This is the easiest mechanism to deal with database types which map to value types and potentially have no value. For example:

object valueFromMySQL = GetValueFromMySQL(); // or whatever
DateTime? datetimeValue = valueFromMySQL as DateTime?;

If the value is valid, it will be interpreted as DateTime, otherwise it will be interpreted as null.

You should also be able to send values of the type DateTime? back to MySQL without issue.