如何使用LINQ将Guid存储在uniqueidentifier SQL字段中？

Question

I create manually my GUID for storing it to database like so

Guid EmailToken = Guid.NewGuid;

I tried to store it in an uniqueidentifier field of SQL with LINQ like

using (DBDataContext DB = new DBDataContext()) {
    Member M = new Member { ActEmlGuid = EmailToken };
    DB.Members.InsertOnSubmit(M);
    DB.SubmitChanges();
}

Unfortunately the SQL now has a different GUID than the one i created. Why is this happening? How can i overcome this? I do not want SQL to create the GUID for me.

And here are the properties of the SQL field

Answer 1

ok chocol8 (grt name btw!!).

if you are using EF code first, you can add the following to your model on the guid.

[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public Guid ActEmlGuid { get; set; }

This will enable sqlserver (server-side) guid generation, thus enabling you to use the correct field types as planned.

It's a tricky little nut this one, as so much depends on the mechanics of your interaction with the db, but hopefully the above will act as a guide in some way, otherwise, my nutty .ToString() option (mentioned in comments) may get you out of a tangle in the short-term -tho of course not advisable.

[edit] - if you are not using EF, then you can update your schema (in the properties page in your OP above) and add:

Answer 2

Try this

Member M = new Member();
M.ActEmlGuid = Guid.NewGuid;
DB.Members.Add(M);
DB.SaveChanges();