public bool AddNewBook_Master(Book_Master b1)
        {
            b1.Book_id = GetNewTBLID();
            string sql = "insert into [Book_Master] ([Book_id],[Reg_id],[Pdate],[Author],[Title],[Subject],[Book_type],[Edition],[Publisher_place],[Publisher],[Year],[Pages],[Volume],[Source],[Cost],[Bill_no],[Book_no],[More_info],[Photo]) values(" + b1.Book_id + ", " + b1.Reg_id + ", '" + b1.Pdate + "', '" + b1.Author + "', '" + b1.Title + "', '" + b1.Subject + "', '" + b1.Book_type + "', '" + b1.Edition + "', '" + b1.Publisher_place + "', '" + b1.Publisher + "', " + b1.Year + ", " + b1.Pages + ", '" + b1.Volume + "', '" + b1.Source + "', " + b1.Cost + ", " + b1.Bill_no + ", " + b1.Book_no + ", '" + b1.More_info + "', '" + b1.Photo + "' )";

            return(SqlDBHelper.ExecuteNonQuery(sql));
        }
        public List <Book_Master> GetBook_MasterList()
        {
            string             Sql             = "select * from [Book_Master]";
            List <Book_Master> listBook_Master = null;

            //Lets get the list of all Book_Master in a datatable
            using (DataTable table = SqlDBHelper.ExecuteSelectCommand(Sql))
            {
                //check if any record exist or not
                if (table.Rows.Count > 0)
                {
                    //Lets go ahead and create the list of Book_Master
                    listBook_Master = new List <Book_Master>();

                    //Now lets populate the Book_Master details into the list of Book_Master
                    foreach (DataRow row in table.Rows)
                    {
                        Book_Master b1 = new Book_Master();
                        b1.Book_id         = Convert.ToInt32(row["Book_id"]);
                        b1.Reg_id          = Convert.ToInt32(row["Reg_id"]);
                        b1.Pdate           = Convert.ToDateTime(row["Pdate"]);
                        b1.Author          = row["Author"].ToString();
                        b1.Title           = row["Title"].ToString();
                        b1.Subject         = row["Subject"].ToString();
                        b1.Book_type       = row["Book_type"].ToString();
                        b1.Edition         = row["Edition"].ToString();
                        b1.Publisher_place = row["Publisher_place"].ToString();
                        b1.Publisher       = row["Publisher"].ToString();
                        b1.Year            = Convert.ToInt32(row["Year"]);
                        b1.Pages           = Convert.ToInt32(row["Pages"]);
                        b1.Volume          = row["Volume"].ToString();
                        b1.Source          = row["Source"].ToString();
                        b1.Cost            = Convert.ToDecimal(row["Cost"]);
                        b1.Bill_no         = Convert.ToInt32(row["Bill_no"]);
                        b1.Book_no         = Convert.ToInt32(row["Book_no"]);
                        b1.More_info       = row["More_info"].ToString();
                        b1.Photo           = row["Photo"].ToString();

                        listBook_Master.Add(b1);
                    }
                }
            }

            return(listBook_Master);
        }
////////////////////////////

        public Book_Master GetBook_MasterDetails(int x1)
        {
            string Sql = "select * from [Book_Master]   where [Book_id] =" + x1 + " ";


            Book_Master b1 = null;

            //Lets get the list of all employees in a datatable
            using (DataTable table = SqlDBHelper.ExecuteSelectCommand(Sql))
            {
                //check if any record exist or not
                if (table.Rows.Count == 1)
                {
                    DataRow row = table.Rows[0];

                    //Lets go ahead and create the list of Book_Master
                    b1 = new Book_Master();

                    //Now lets populate the employee details into the list of Book_Master
                    b1.Book_id         = Convert.ToInt32(row["Book_id"]);
                    b1.Reg_id          = Convert.ToInt32(row["Reg_id"]);
                    b1.Pdate           = Convert.ToDateTime(row["Pdate"]);
                    b1.Author          = row["Author"].ToString();
                    b1.Title           = row["Title"].ToString();
                    b1.Subject         = row["Subject"].ToString();
                    b1.Book_type       = row["Book_type"].ToString();
                    b1.Edition         = row["Edition"].ToString();
                    b1.Publisher_place = row["Publisher_place"].ToString();
                    b1.Publisher       = row["Publisher"].ToString();
                    b1.Year            = Convert.ToInt32(row["Year"]);
                    b1.Pages           = Convert.ToInt32(row["Pages"]);
                    b1.Volume          = row["Volume"].ToString();
                    b1.Source          = row["Source"].ToString();
                    b1.Cost            = Convert.ToDecimal(row["Cost"]);
                    b1.Bill_no         = Convert.ToInt32(row["Bill_no"]);
                    b1.Book_no         = Convert.ToInt32(row["Book_no"]);
                    b1.More_info       = row["More_info"].ToString();
                    b1.Photo           = row["Photo"].ToString();
                }
            }

            return(b1);
        }
////////////////////////////

        public bool DeleteBook_Master(Book_Master x1)
        {
            string Sql = "delete from [Book_Master]  where [Book_id] =" + x1.Book_id + " ";

            return(SqlDBHelper.ExecuteNonQuery(Sql));
        }
////////////////////////////

        public bool UpdateBook_Master(Book_Master b1)
        {
            string sql = "update [Book_Master] set [Reg_id]=" + b1.Reg_id + " ,[Pdate]='" + b1.Pdate + "',[Author]='" + b1.Author + "',[Title]='" + b1.Title + "',[Subject]='" + b1.Subject + "',[Book_type]='" + b1.Book_type + "',[Edition]='" + b1.Edition + "',[Publisher_place]='" + b1.Publisher_place + "',[Publisher]='" + b1.Publisher + "',[Year]=" + b1.Year + " ,[Pages]=" + b1.Pages + " ,[Volume]='" + b1.Volume + "',[Source]='" + b1.Source + "',[Cost]=" + b1.Cost + " ,[Bill_no]=" + b1.Bill_no + " ,[Book_no]=" + b1.Book_no + " ,[More_info]='" + b1.More_info + "',[Photo]='" + b1.Photo + "'  where [Book_id] =" + b1.Book_id + " ";

            return(SqlDBHelper.ExecuteNonQuery(sql));
        }