Qty Control in C#

Question

pstrjds, From the code you have provided I am trying to implement that code and the msdn link you provided couple of days ago. I am not sure how to put it together but I am see

Answer 1

Your application flow should be as following;

protected void Button1_Click(object sender, EventArgs e)
    {
        SqlConnection c = new SqlConnection("Data Source=.; Integrated Security=SSPI; Initial Catalog=FA");


        SqlCommand cmd = new SqlCommand();
        cmd.Connection = c;
        c.Open();

        // get remaining stocks
        cmd.CommandText = "SELECT Qty from TEST WHERE Id=1";
        int ret = Convert.ToInt32(cmd.ExecuteScalar().ToString());

        if (ret == 0)
        {
            Label1.Text = "Not enough stocks.";
        }
        else 
        {
            cmd.CommandText = "UPDATE TEST SET Qty = Qty-1 WHERE Id=1";
            cmd.ExecuteNonQuery();

            if (ret == 2)
            {
                Label1.Text = "Re-order. Remaining stocks: 1";
            }
            else
            {
                Label1.Text = "Remaining stocks: " + (ret-1).ToString();
            }
        }


        c.Close();
    }