'datetime2' error when using entity framework in VS 2010 .net 4.0

Question

Getting this error:

System.Data.SqlClient.SqlException : The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range v

Answer 1

If you are using Code First you must declare any optional DateTime property as DateTime? or Nullable<DateTime>. Unset DateTime objects can cause issues.

If the property is nullable in the database and a standard DateTime in code (not DateTime?), ADO.NET will send an insert command with a date of 0001-01-01 (not NULL), but the minimum SQL DateTime value is 1753-01-01, causing an error. If your DateTime property in the code is nullable (e.g. DateTime? or Nullable<DateTime>), the insert command is will attempt to insert a NULL instead of an out-of-range date.

Answer 2

Is there ModifiedTime property in your entity, which is updated on the database side only? If so, you must use DatabaseGeneratedOption.Computed (for EF CodeFirst). Also visit this https://stackoverflow.com/a/9508312/1317263

Thank you.

Answer 3

After trying to solve this issue for several days I used DateTime? as the datatype in my model with Entity Framework Code-First instead of DateTime.

Answer 4

Two solutions:

• Declare the properties in your class like below and make an update-database:

  public DateTime? MyDate {get; set;}
  

• Or set a date for the property in the Seed method that populates the database, no need of update-database :

  context.MyClass.AddOrUpdate(y => y.MyName,new MyClass { MyName = "Random", MyDate= DateTime.Now })
  

Answer 5

When using Entity framework code first, declare it like this:

public Nullable<System.DateTime> LastLogin { get; set; }

Answer 6

Whatever fits in a datetime will fit in a datetime2 data type, vice versa this is not the case, you can stick a date of January 1500 in a datetime2 data type but datetime only goes back to 1753, a datetime2 column can go back all the way to the year 1. I would check what the min date that you are passing in is and if your tables have datetime2 or datetime data type columns