give stored procedure for shopping cart details?

protected void btncart_Click(object sender, EventArgs e)
    {
        if (con.State == ConnectionState.Closed)
        {
            con.Open();
        }
        SqlCommand cmd = new SqlCommand("addcart1", con);
        cmd.CommandType = CommandType.StoredProcedure;
        cmd.Parameters.AddWithValue("@mastreid",OleDbType.VarChar,50);
        cmd.Parameters.AddWithValue("@usersession");
        cmd.Parameters.AddWithValue("@pro_id");
        cmd.Parameters.AddWithValue("@pro_name");
        cmd.Parameters.AddWithValue("@price");
        cmd.Parameters.AddWithValue("@quantity");
        cmd.Parameters.AddWithValue("@type");
        cmd.Parameters.AddWithValue("@pro_img");
        cmd.ExecuteNonQuery();

    }