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\";
         


        

Answer 1

Use Stored Procedure only for the queries and use SCOPE_IDENTITY to get max value.

Answer 2

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 3

cmd = new SqlCommand("Insert into table values (1,2,3); SELECT SCOPE_IDENTITY()", conn);

lastRecord = cmd.ExecuteScalar().ToString();

Answer 4

I'd recommend to use a stored procedure to do this. You can give it an OUTPUT parameter which you can use to return the id value back to your app.

Answer 5

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

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

Answer 6

U can try ExecuteScalar for getting the LastID value.