[Dapper.Contrib - Update] SqlDateTime overflow error

Hi,

I'm using Dapper v1.50.5 v2.0.30 and Dapper.Contrib v1.50.5 v2.0.30, here is my model:

public class Foo
{
    public int Id { get; set; }
    public string Title { get; set; }
    public DateTime CreatedDate { get; set; }
}

And here is my code for update single record:

using (var db = new SqlConnection(SQLConnection.ConnectionString))
{
    db.Open();

    db.Update(new Foo{ Id = 8, Title = "222" });
}

I got:

SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.

Dapper.Contribmakes SQL happy if I assign some value to CreatedDate, e.g: CreatedDate = DateTime.Now, but it is created date and should not be changed on each update.

Start by reproducing the db.Update call with the Foo model and inspect the Dapper.Contrib update path. Done means updating Title succeeds without assigning CreatedDate and does not overwrite the existing created date.