Question

Hi i’m having trouble with inserting incremented userid inside my db below is my table,stored proc,and my code.

CREATE TABLE [dbo].[Assignment2]
(
userID int PRIMARY KEY IDENTITY(1,1),
Name varchar(255) NOT NULL,
Age int NOT NULL,
Hobbies varchar(255)
)

and a stored procedure

ALTER PROCEDURE [db].[p_Assignment2_ins]
        @userID           int,
        @Name             nvarchar(100),
        @Age              int,
        @Hobbies          nvarchar(100)                   
AS

INSERT INTO [DB].[db].[Assignment2]
           ([Name]
           ,[Age]
           ,[Hobbies])
     VALUES
           (@Name
           ,@Age
           ,@Hobbies)


If @@Error <> 0
    Return -1

    Select @userID = @@Identity // this one just get the latest id that we inserted                 right?

Return 0 

I have some question :

1. I want to know how do we insert the UserID from the code behind because If the table is empty at first shouldn’t we insert a data first into the table

2. How do we generate an AutoIncrementID from codebehind and insert it

           SqlConnection conn = new SqlConnection(ts.ConnMethod());
           SqlCommand cmd = new SqlCommand("p_Assignment2_ins", conn);
           cmd.CommandType = CommandType.StoredProcedure;
   
           //I'm missing how we should add the IncrementedID 
   
           cmd.Parameters.AddWithValue("@Name", TextBox1.Text);
           cmd.Parameters.AddWithValue("@Age", TextBox2.Text);
           cmd.Parameters.AddWithValue("@Hobbies", TextBox3.Text);
   
           conn.Open();
           cmd.ExecuteNonQuery();
           conn.Close();
   

Any help is really appreciated thanks

Answer 1

If you have AUTOINCREMENT field, you SHOULD NOT insert and generate values at all. DB is doing all by itself. So, remove the code that inserts ID-s