Ejemplo n.º 1
0
        //删除一个类别:
        public static int DeleteColumnCat(ColumnCat cat)
        {
            Connection connection = new Connection();

            using (IDbConnection conn = connection.OpenConnection())
            {
                const string query = "delete from ColumnCat where id=@id";
                return(conn.Execute(query, cat));
            }
        }
Ejemplo n.º 2
0
        /// <summary>
        /// 更新一个类别
        /// </summary>
        /// <param name="cat"></param>
        /// <returns></returns>
        public static int UpdateColumnCat(ColumnCat cat)
        {
            Connection connection = new Connection();

            using (IDbConnection conn = connection.OpenConnection())
            {
                const string query = "update ColumnCat set name=@Name, ModifiedOn = @ModifiedOn, Parentid = @Parentid where Id = @id";
                return(conn.Execute(query, cat));
            }
        }
Ejemplo n.º 3
0
        /// <summary>
        /// 接下来向数据库里添加一个类别
        /// </summary>
        /// <param name="cat"></param>
        /// <returns></returns>
        public static int InsertColumnCat(ColumnCat cat)
        {
            Connection connection = new Connection();

            using (IDbConnection conn = connection.OpenConnection())
            {
                const string query = "insert into ColumnCat([name],ModifiedOn,Parentid) values (@name, @ModifiedOn, @Parentid)";
                int          row   = conn.Execute(query, cat);
                //更新对象的Id为数据库里新增的Id,假如增加之后不需要获得新增的对象,
                //只需将对象添加到数据库里,可以将下面的一行注释掉。
                SetIdentity(conn, id => cat.Id = id, "id", "ColumnCat");
                return(row);
            }
        }
Ejemplo n.º 4
0
        /// <summary>
        /// Dapper对事务处理的例子,如删除类别的同时删除类别下的所有新闻。或者删除产品的同时,删除产品图片表里关联的所有图片。
        /// </summary>
        /// <param name="cat"></param>
        /// <returns></returns>
        public int DeleteColumnCatAndColumn(ColumnCat cat)
        {
            Connection connection = new Connection();

            using (IDbConnection conn = connection.OpenConnection())
            {
                const string deleteColumn    = "delete from [Column] where ColumnCatid=@catid";
                const string deleteColumnCat = "delete from ColumnCat where id=@Id";

                IDbTransaction transaction = conn.BeginTransaction();
                int            row         = conn.Execute(deleteColumn, new { catid = cat.Id }, transaction, null, null);
                row += conn.Execute(deleteColumnCat, new { id = cat.Id }, transaction, null, null);
                transaction.Commit();
                return(row);
            }
        }