public bool Delete(Customers_Sellers_BLL c)
        {
            bool          isSuccess = false;
            SqlConnection conn      = new SqlConnection(myconnstring);

            try
            {
                String     sql = "Delete from Customers_Sellers where seller_reg_no=@seller_reg_no";
                SqlCommand cmd = new SqlCommand(sql, conn);
                cmd.Parameters.AddWithValue("@seller_reg_no", c.seller_reg_no);
                conn.Open();

                int rows = cmd.ExecuteNonQuery();

                if (rows > 0)
                {
                    isSuccess = true;
                }
                else
                {
                    isSuccess = false;
                }
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message);
            }
            finally
            {
                conn.Close();
            }

            return(isSuccess);
        }
        public bool Update(Customers_Sellers_BLL c)
        {
            bool          isSuccess = false;
            SqlConnection conn      = new SqlConnection(myconnstring);

            try
            {
                String     sql = "Update Customers_Sellers set seller_name=@seller_name,company_name=@company_name,pincode=@pincode,contact=@contact,address=@address,city=@city, state=@state Where seller_reg_no=@seller_reg_no";
                SqlCommand cmd = new SqlCommand(sql, conn);
                cmd.Parameters.AddWithValue("@seller_reg_no", c.seller_reg_no);
                cmd.Parameters.AddWithValue("@seller_name", c.seller_name);
                cmd.Parameters.AddWithValue("@company_name", c.company_name);
                cmd.Parameters.AddWithValue("@city", c.city);
                cmd.Parameters.AddWithValue("@state", c.state);
                cmd.Parameters.AddWithValue("@contact", c.contact);
                cmd.Parameters.AddWithValue("@pincode", c.pincode);
                cmd.Parameters.AddWithValue("@address", c.address);

                conn.Open();

                int rows = cmd.ExecuteNonQuery();

                if (rows > 0)
                {
                    isSuccess = true;
                }
                else
                {
                    isSuccess = false;
                }
            }
            catch (Exception e)
            {
                MessageBox.Show(e.Message);
            }
            finally
            {
                conn.Close();
            }

            return(isSuccess);
        }