SQL Server and C#: get last inserted id

Question

public static void CreateSocialGroup(string FBUID)
{
    string query = "INSERT INTO SocialGroup (created_by_fbuid) VALUES (@FBUID); SELECT @@IDENTITY AS LastID";

    using (SqlConnection connection = new SqlConnection(ConnectionString))
    {
        SqlCommand command = new SqlCommand(query, connection);
        command.Parameters.AddWithValue("@FBUID", FBUID);

        connection.Open();
        command.ExecuteNonQuery();
    }
}

Is this the right way to do it? And how do i get LastID in to a variable? Thanks

Answer 1

OUTPUT clause?

string query = "INSERT INTO SocialGroup (created_by_fbuid) 
                OUTPUT INSERTED.IDCol  --use real column here
                VALUES (@FBUID)";
...
int lastId = (int)command.ExecuteScalar();

Answer 2

You can use ExecuteScalar to get the last value from a Sqlcommand.

The scope_identity() function is safer than @@identity.