Exemplo n.º 1
0
        // fetch all from table into new List of class instances, only populating specific columns,
        //  with a limit on number of returned rows and order by columns starting at a specific row
        // links:
        //  docLink: http://sql2x.org/documentationLink/12d2812e-e963-4f26-8014-48c4e9cfb3ae
        public static List <CrudeNationalityRefData> FetchAllWithLimitAndOffset(int limit, int offset)
        {
            var dataList = new List <CrudeNationalityRefData>();

            // create query against nationality_ref
            // this will be ansi sql and parameterized
            // parameterized queries are a good way of preventing sql injection
            //   and to make sure the query plan is pre-compiled
            // links:
            // docLink: http://sql2x.org/documentationLink/21eca289-4747-4a75-b0a2-1a58457be608
            string sql = @" select nationality_rcd, nationality_name, user_id, date_time
                            from [nationality_ref]
                            order by nationality_name";

            // open standard connection
            // the connection is found in web.config
            // the connection is closed upon completion of the reader
            // links:
            // docLink: http://sql2x.org/documentationLink/c3e624a4-8479-4c17-bec7-ec09f3abbe64
            using (var conn = new SqlConnection(Conn.ConnectionString)) {
                conn.Open();

                using (var command = new SqlCommand(sql, conn)) {
                    // execute query against nationality_ref
                    // if the query fails in the preprocessor of sql server
                    //   an exception will be raised
                    // links:
                    // docLink: http://sql2x.org/documentationLink/6507b543-adbc-4863-810b-8db439f40d5c
                    IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult);

                    int count = 0;

                    // read all rows returned from the query of nationality_ref
                    // read all columns from the datareader and
                    //   populate the List of C# objects with them
                    // links:
                    // docLink: http://sql2x.org/documentationLink/fcd15e2f-df3f-44d8-8a13-d2e93d97f685
                    while (reader.Read())
                    {
                        if ((count >= offset) && (count <= offset + limit))
                        {
                            var data = new CrudeNationalityRefData();
                            data.Populate(reader);
                            dataList.Add(data);
                        }
                        count++;
                        if (count > limit + offset)
                        {
                            break;
                        }
                    }
                }

                return(dataList);
            }
        }
Exemplo n.º 2
0
        // fetch by Foreign key into new List of class instances
        // links:
        //  docLink: http://sql2x.org/documentationLink/13095cd7-f136-4532-8969-c50c62cc05ef
        public static List <CrudeNationalityRefData> FetchByUserId(System.Guid userId)
        {
            var dataList = new List <CrudeNationalityRefData>();

            // create query against nationality_ref
            // this will be ansi sql and parameterized
            // parameterized queries are a good way of preventing sql injection
            //   and to make sure the query plan is pre-compiled
            // links:
            // docLink: http://sql2x.org/documentationLink/86c78f05-a65f-4dfe-b048-d0cbece49f4e
            string sql = @" select nationality_rcd, nationality_name, user_id, date_time
                            from [nationality_ref]
                            where user_id = @user_id
                              
                            order by nationality_name";

            // open standard connection
            // the connection is found in web.config
            // the connection is closed upon completion of the reader
            // links:
            // docLink: http://sql2x.org/documentationLink/6fd25822-459f-4796-803a-071a3a270aa0
            using (var conn = new SqlConnection(Conn.ConnectionString)) {
                conn.Open();

                using (var command = new SqlCommand(sql, conn)) {
                    // add foreign key column
                    // this foreign key column will be used together with the prepared ansi sql statement
                    // links:
                    // docLink: http://sql2x.org/documentationLink/8aec2e5c-4732-4662-badb-83b89d1c34a9
                    command.Parameters.Add("@user_id", SqlDbType.UniqueIdentifier).Value = userId;

                    // execute query against nationality_ref
                    // if the query fails in the preprocessor of sql server
                    //   an exception will be raised
                    // links:
                    // docLink: http://sql2x.org/documentationLink/bb9abe5c-d2c1-455a-b597-a2af0a35de5a
                    IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult);

                    // read all rows returned from the query of nationality_ref
                    // read all columns from the datareader and
                    //   populate the List of C# objects with them
                    // links:
                    // docLink: http://sql2x.org/documentationLink/5c413c03-5ddc-472a-a63d-53aecc7a2573
                    while (reader.Read())
                    {
                        var data = new CrudeNationalityRefData();
                        data.Populate(reader);
                        dataList.Add(data);
                    }
                }

                return(dataList);
            }
        }
Exemplo n.º 3
0
        // fetch by Primary key into new class instance
        // links:
        //  crud definition: https://en.wikipedia.org/wiki/Create,_read,_update_and_delete
        //  docLink: http://sql2x.org/documentationLink/7a625d0a-3028-42ce-a543-72ea3673cef4
        // parameters:
        //  nationalityRcd: primary key of table nationality_ref
        public static CrudeNationalityRefData GetByNationalityRcd(string nationalityRcd)
        {
            // create query against nationality_ref
            // this will be ansi sql and parameterized
            // parameterized queries are a good way of preventing sql injection
            //   and to make sure the query plan is pre-compiled
            // links:
            // docLink: http://sql2x.org/documentationLink/72f5fc83-c460-40fe-bac9-73b7ee0c6b77
            string sql = @" select top 1 nationality_rcd, nationality_name, user_id, date_time
                            from [nationality_ref]
                            where nationality_rcd = @nationality_rcd
                            order by nationality_name";

            var ret = new CrudeNationalityRefData();

            // open standard connection
            // the connection is found in web.config
            // the connection is closed upon completion of the reader
            // links:
            // docLink: http://sql2x.org/documentationLink/1ecca728-0c07-4dd7-b095-d10777b25b70
            using (var conn = new SqlConnection(Conn.ConnectionString)) {
                conn.Open();

                using (var command = new SqlCommand(sql, conn)) {
                    // add primary key
                    // this primary key will be used together with the prepared ansi sql statement
                    // links:
                    // docLink: http://sql2x.org/documentationLink/1ecca728-0c07-4dd7-b095-d10777b25b70
                    command.Parameters.Add("@nationality_rcd", SqlDbType.NVarChar).Value = nationalityRcd;

                    // execute query against nationality_ref
                    // if the query fails in the preprocessor of sql server
                    //   an exception will be raised
                    // links:
                    // docLink: http://sql2x.org/documentationLink/fd5c5faa-b400-4f29-b12b-9675c53a757f
                    IDataReader reader = command.ExecuteReader(CommandBehavior.SingleRow);

                    // populate serialized class if a row was found
                    if (reader.Read())
                    {
                        ret.Populate(reader);
                    }
                }
            }

            return(ret);
        }
Exemplo n.º 4
0
        // fetch all from table into new List of class instances, with a limit on number of returned rows and order by columns
        // links:
        //  docLink: http://sql2x.org/documentationLink/dfaa482b-059b-4f17-a9a9-4885138dbb46
        public static List <CrudeNationalityRefData> FetchAllWithLimit(int limit)
        {
            var dataList = new List <CrudeNationalityRefData>();

            // create query against nationality_ref
            // this will be ansi sql and parameterized
            // parameterized queries are a good way of preventing sql injection
            //   and to make sure the query plan is pre-compiled
            // links:
            // docLink: http://sql2x.org/documentationLink/41f82773-6d37-4ebe-840c-c60e06337f45
            string sql = @" select top " + limit.ToString() + @" nationality_rcd, nationality_name, user_id, date_time
                            from [nationality_ref]
                            order by nationality_name";

            // open standard connection
            // the connection is found in web.config
            // the connection is closed upon completion of the reader
            // links:
            // docLink: http://sql2x.org/documentationLink/da228d98-b30e-4d79-89ae-98e813437753
            using (var conn = new SqlConnection(Conn.ConnectionString)) {
                conn.Open();

                using (var command = new SqlCommand(sql, conn)) {
                    // execute query against nationality_ref
                    // if the query fails in the preprocessor of sql server
                    //   an exception will be raised
                    // links:
                    // docLink: http://sql2x.org/documentationLink/c32ad724-8a03-4b4c-b6fb-a5abfb1d707e
                    IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult);

                    // read all rows returned from the query of nationality_ref
                    // read all columns from the datareader and
                    //   populate the List of C# objects with them
                    // links:
                    // docLink: http://sql2x.org/documentationLink/9ba4395d-d8a4-4427-b80f-7b828e34da7a
                    while (reader.Read())
                    {
                        var data = new CrudeNationalityRefData();
                        data.Populate(reader);
                        dataList.Add(data);
                    }
                }

                return(dataList);
            }
        }
Exemplo n.º 5
0
        // fetch all rows from table nationality_ref into new List of class instances
        // links:
        //  docLink: http://sql2x.org/documentationLink/7ca0c014-527e-4a0a-bd1f-12f4d8ea4b43
        public static List <CrudeNationalityRefData> FetchAll()
        {
            var dataList = new List <CrudeNationalityRefData>();

            // create query against nationality_ref
            // this will be ansi sql and parameterized
            // parameterized queries are a good way of preventing sql injection
            //   and to make sure the query plan is pre-compiled
            // links:
            // docLink: http://sql2x.org/documentationLink/72f9f1bc-447c-4327-9d26-4b0790a07ff8
            string sql = @" select nationality_rcd, nationality_name, user_id, date_time
                            from [nationality_ref]
                            order by nationality_name";

            // open standard connection
            // the connection is found in web.config
            // the connection is closed upon completion of the reader
            // links:
            // docLink: http://sql2x.org/documentationLink/952b3f82-bc00-4e82-9430-6bc26ff8bc4d
            using (var conn = new SqlConnection(Conn.ConnectionString)) {
                conn.Open();

                using (var command = new SqlCommand(sql, conn)) {
                    // execute query against nationality_ref
                    // if the query fails in the preprocessor of sql server
                    //   an exception will be raised
                    // links:
                    // docLink: http://sql2x.org/documentationLink/ed55cc5b-d6be-4f5e-9385-ee726dfc2bf1
                    IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult);

                    // read all rows returned from the query of nationality_ref
                    // read all columns from the datareader and
                    //   populate the List of C# objects with them
                    // links:
                    // docLink: http://sql2x.org/documentationLink/c1b8b800-b250-4822-a699-d93a35f4414d
                    while (reader.Read())
                    {
                        var data = new CrudeNationalityRefData();
                        data.Populate(reader);
                        dataList.Add(data);
                    }
                }

                return(dataList);
            }
        }
Exemplo n.º 6
0
        // fetch all from table into new List of class instances, filtered by any column
        // links:
        //  docLink: http://sql2x.org/documentationLink/a736bbfd-030d-492e-a86a-7a5e478eeb79
        public static List <CrudeNationalityRefData> FetchWithFilter(string nationalityRcd, string nationalityName, System.Guid userId, System.DateTime dateTime)
        {
            var dataList = new List <CrudeNationalityRefData>();

            // create query against nationality_ref
            // this will be ansi sql and parameterized
            // parameterized queries are a good way of preventing sql injection
            //   and to make sure the query plan is pre-compiled
            // links:
            // docLink: http://sql2x.org/documentationLink/06da7a50-8760-48cd-b789-a41cac3edd13
            string sql = @" select nationality_rcd, nationality_name, user_id, date_time
                            from [nationality_ref]
                            where 1 = 1";

            // open standard connection
            // the connection is found in web.config
            // the connection is closed upon completion of the reader
// links:
// docLink: http://sql2x.org/documentationLink/6ec2495f-3a49-4a94-ad59-0ce064fc8654
            using (var conn = new SqlConnection(Conn.ConnectionString)) {
                conn.Open();

                using (var command = new SqlCommand(sql, conn)) {
                    // add search column(s) if they are not null or empty
                    // this search column(s) will be used together with the prepared ansi sql statement
                    // links:
                    // docLink: http://sql2x.org/documentationLink/2193123a-3534-412b-8521-dac14bb3884d
                    if (!string.IsNullOrEmpty(nationalityRcd))
                    {
                        sql += "  and nationality_rcd like '%' + @nationality_rcd + '%'";
                        command.Parameters.Add("@nationality_rcd", SqlDbType.NVarChar).Value = nationalityRcd.Replace("'", "''");
                    }
                    if (!string.IsNullOrEmpty(nationalityName))
                    {
                        sql += "  and nationality_name like '%' + @nationality_name + '%'";
                        command.Parameters.Add("@nationality_name", SqlDbType.NVarChar).Value = nationalityName.Replace("'", "''");
                    }
                    if (userId != Guid.Empty)
                    {
                        sql += "  and user_id = @user_id";
                        command.Parameters.Add("@user_id", SqlDbType.UniqueIdentifier).Value = userId;
                    }
                    if (dateTime != DateTime.MinValue)
                    {
                        sql += "  and date_time = @date_time";
                        command.Parameters.Add("@date_time", SqlDbType.DateTime).Value = dateTime;
                    }
                    sql += " order by nationality_name";

                    command.CommandText = sql;

                    // execute query against nationality_ref
                    // if the query fails in the preprocessor of sql server
                    //   an exception will be raised
                    // links:
                    // docLink: http://sql2x.org/documentationLink/9f9fcbf4-4764-4b2e-8dc6-41d0366c95c9
                    IDataReader reader = command.ExecuteReader(CommandBehavior.SingleResult);

                    // read all rows returned from the query of nationality_ref
                    // read all columns from the datareader and
                    //   populate the List of C# objects with them
                    // links:
                    // docLink: http://sql2x.org/documentationLink/60181c7c-4a5e-41a3-9599-4e7a0aaf0cc8
                    while (reader.Read())
                    {
                        var data = new CrudeNationalityRefData();
                        data.Populate(reader);
                        dataList.Add(data);
                    }
                }

                return(dataList);
            }
        }