Conversion of a datetime2 data type to a datetime data type results out-of-range value

Question

I've got a datatable with 5 columns, where a row is being filled with data then saved to the database via a transaction.

While saving, an error is returned:

The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value

It implies, as read, that my datatable has a type of DateTime2 and my database a DateTime; that is wrong.

The date column is set to a DateTime like this:

new DataColumn("myDate", Type.GetType("System.DateTime"))

Question

Can this be solved in code or does something have to be changed on a database level?

Answer 1

This can happen if you do not assign a value to a DateTime field when the field does not accept NULL values.

That fixed it for me!

Answer 2

Both the DATETIME and DATETIME2 map to System.DateTime in .NET - you cannot really do a "conversion", since it's really the same .NET type.

See the MSDN doc page: http://msdn.microsoft.com/en-us/library/bb675168.aspx

There are two different values for the "SqlDbType" for these two - can you specify those in your DataColumn definition?

BUT: on SQL Server, the date range supported is quite different.

DATETIME supports 1753/1/1 to "eternity" (9999/12/31), while DATETIME2 supports 0001/1/1 through eternity.

So what you really need to do is check for the year of the date - if it's before 1753, you need to change it to something AFTER 1753 in order for the DATETIME column in SQL Server to handle it.

Marc