saving data from 2nd form to the same master table in win form application

Question

I have two winforms where form 1 is used to enter data from first seven fields and other forms is used to enter for last three fields , where i have the table stored in MSSQL server ,Now when i try to save the last three fields i am getting below " invalid column error , but actually it is present in my sql table , i am very new to C# , kindly help me :

Code for saving data in second form:

private void Btnrejsave_Click(object sender, EventArgs e)
        {

            SqlConnection con = new SqlConnection(cs);
            SqlCommand cmd;
            con.Open();
            string s = "select * from RejReason where SpoolId = (@p4) insert into IP_Spools(RejectReason1,RejectReason2,RejectReason3) values(@p1,@p2,@p3)";
            cmd = new SqlCommand(s, con);
            cmd.Parameters.AddWithValue("@p1", rejectReason1ComboBox.Text);
            cmd.Parameters.AddWithValue("@p2", rejectReason2ComboBox.Text);
            cmd.Parameters.AddWithValue("@p3", rejectReason3ComboBox.Text);
            cmd.Parameters.AddWithValue("@p4", IDtextbox.Text);
            cmd.CommandType = CommandType.Text;
            int i = cmd.ExecuteNonQuery();
            con.Close();

        }

And the error i am getting :

{"Invalid column name 'SpoolId'."}

but the server table has that column: