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

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?

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!

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

In my SQL Server 2008 database, I had a DateTime column flagged as not nullable, but with a GetDate() function as its default value. When inserting new object using EF4, I got this error because I wasn't passing a DateTime property on my object explicitly. I expected the SQL function to handle the date for me but it did not. My solution was to send the date value from code instead of relying on the database to generate it.

obj.DateProperty = DateTime.now; // C#

for me it was because the datetime was..

01/01/0001 00:00:00

in this case you want to assign null to you EF DateTime Object... using my FirstYearRegistered code as an example

DateTime FirstYearRegistered = Convert.ToDateTime(Collection["FirstYearRegistered"]);
if (FirstYearRegistered != DateTime.MinValue)
{
    vehicleData.DateFirstReg = FirstYearRegistered;
}  

This one was driving me crazy. I wanted to avoid using a nullable date time (DateTime?). I didn't have the option of using SQL Server 2008's datetime2 type either

modelBuilder.Entity<MyEntity>().Property(e => e.MyDateColumn).HasColumnType("datetime2");

I eventually opted for the following:

public class MyDb : DbContext
{
    public override int SaveChanges()
    {
        UpdateDates();
        return base.SaveChanges();
    }

    private void UpdateDates()
    {
        foreach (var change in ChangeTracker.Entries<MyEntityBaseClass>())
        {
            var values = change.CurrentValues;
            foreach (var name in values.PropertyNames)
            {
                var value = values[name];
                if (value is DateTime)
                {
                    var date = (DateTime)value;
                    if (date < SqlDateTime.MinValue.Value)
                    {
                        values[name] = SqlDateTime.MinValue.Value;
                    }
                    else if (date > SqlDateTime.MaxValue.Value)
                    {
                        values[name] = SqlDateTime.MaxValue.Value;
                    }
                }
            }
        }
    }
}