コード例 #1
0
        private static long TablePerTypeInsert <T>(IDbConnection connection, T entityToInsert, IDbTransaction transaction, int?commandTimeout) where T : class
        {
            var type       = typeof(T);
            var parentType = type.BaseType;

            ISqlAdapter adapter = GetFormatter(connection);

            #region Insert the parent class

            var parentName               = GetTableName(parentType);
            var parentProperties         = TypePropertiesCache(parentType);
            var parentKeyProperties      = KeyPropertiesCache(parentType);
            var parentComputedProperties = ComputedPropertiesCache(parentType);
            var parentAllPropertiesExceptKeyAndComputed = parentProperties.Except(parentKeyProperties.Union(parentComputedProperties)).ToArray();

            var parentColumnList    = GenerateColumnList <T>(parentAllPropertiesExceptKeyAndComputed, adapter);
            var parentParameterList = GenerateParameterList <T>(parentAllPropertiesExceptKeyAndComputed);

#if DEBUG
            foreach (var key in parentKeyProperties)
            {
                var value = key.GetValue(entityToInsert);
                if (value is int && (int)value != 0)
                {
                    throw new Exception("Trying to Insert but the [Id] is not 0");
                }
                else if (value is long && (long)value != 0L)
                {
                    throw new Exception("Trying to Insert but the [Id] is not 0");
                }
            }
#endif

            long id = adapter.Insert(connection, transaction, commandTimeout, parentName, parentColumnList, parentParameterList, parentKeyProperties, entityToInsert);

            #endregion


            #region Insert the child class

            var name          = GetTableName(type);
            var allProperties = TypePropertiesCache(type);
            //Child class shouldn't have a Key directly, it is inherited from the parent and needs to be inserted here
            var computedProperties = ComputedPropertiesCache(type);
            var allPropertiesIncludingKeyExceptComputed = allProperties.Except(computedProperties).ToArray();

            var columnList    = GenerateColumnList <T>(allPropertiesIncludingKeyExceptComputed, adapter);
            var parameterList = GenerateParameterList <T>(allPropertiesIncludingKeyExceptComputed);

            adapter.Insert(connection, transaction, commandTimeout, name, columnList, parameterList, Enumerable.Empty <PropertyInfo>(), entityToInsert);

            #endregion

            return(id);
        }
コード例 #2
0
        /// <summary>
        ///   Inserts an entity into table "Ts" and returns identity id.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <param name="transaction"></param>
        /// <param name="commandTimeout"></param>
        /// <returns>Identity of inserted entity</returns>
        public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null,
                                      int?commandTimeout = null) where T : class
        {
            Type          type         = typeof(T);
            string        name         = GetTableName(type);
            StringBuilder sbColumnList = new StringBuilder(null);
            IEnumerable <PropertyInfo> allProperties = TypePropertiesCache(type);
            IEnumerable <PropertyInfo> keyProperties = KeyPropertiesCache(type);

            PropertyInfo[]             propertyInfos          = keyProperties as PropertyInfo[] ?? keyProperties.ToArray();
            IEnumerable <PropertyInfo> allPropertiesExceptKey = allProperties.Except(propertyInfos);

            PropertyInfo[] propertiesExceptKey = allPropertiesExceptKey as PropertyInfo[] ?? allPropertiesExceptKey.ToArray();
            for (int i = 0; i < propertiesExceptKey.Count(); i++)
            {
                PropertyInfo property = propertiesExceptKey.ElementAt(i);
                sbColumnList.AppendFormat("[{0}]", property.Name);
                if (i < propertiesExceptKey.Count() - 1)
                {
                    sbColumnList.Append(", ");
                }
            }

            StringBuilder sbParameterList = new StringBuilder(null);

            for (int i = 0; i < propertiesExceptKey.Count(); i++)
            {
                PropertyInfo property = propertiesExceptKey.ElementAt(i);
                sbParameterList.AppendFormat("@{0}", property.Name);
                if (i < propertiesExceptKey.Count() - 1)
                {
                    sbParameterList.Append(", ");
                }
            }

            ISqlAdapter adapter = GetFormatter(connection);
            long        id      = 0;

            if (transaction == null)
            {
                id = adapter.Insert(connection, commandTimeout, name, sbColumnList.ToString(),
                                    sbParameterList.ToString(), propertyInfos, entityToInsert);
            }
            else
            {
                id = adapter.Insert(transaction, commandTimeout, name, sbColumnList.ToString(),
                                    sbParameterList.ToString(), propertyInfos, entityToInsert);
            }
            return(id);
        }
コード例 #3
0
        public string SqlString()
        {
            string    sql    = string.Empty;
            SqlEntity entity = GetSqlEntity();

            switch (this._type)
            {
            case SqlType.Query:
                sql = _adapter.Query(entity);
                break;

            case SqlType.Insert:
                sql = _adapter.Insert(_userKey, entity);
                break;

            case SqlType.Update:
                sql = _adapter.Update(entity);
                break;

            case SqlType.Delete:
                sql = _adapter.Delete(entity);
                break;

            default:
                break;
            }
            return(sql);
        }
コード例 #4
0
        /// <summary>
        /// Inserts an entity into table "Ts" and returns identity id.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <returns>Identity of inserted entity</returns>
        public static long Insert<T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int? commandTimeout = null) where T : class
        {
            
            var type = typeof(T);

            var name = GetTableName(type);

            var sbColumnList = new StringBuilder(null);

			var allProperties = TypePropertiesCache(type);
            var keyProperties = KeyPropertiesCache(type);
			var computedProperties = ComputedPropertiesCache(type);
			var allPropertiesExceptKeyAndComputed = allProperties.Except(keyProperties.Union(computedProperties));

            for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count(); i++)
            {
                var property = allPropertiesExceptKeyAndComputed.ElementAt(i);
				sbColumnList.AppendFormat("[{0}]", property.Name);
                if (i < allPropertiesExceptKeyAndComputed.Count() - 1)
					sbColumnList.Append(", ");
            }

			var sbParameterList = new StringBuilder(null);
			for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count(); i++)
            {
                var property = allPropertiesExceptKeyAndComputed.ElementAt(i);
                sbParameterList.AppendFormat("@{0}", property.Name);
                if (i < allPropertiesExceptKeyAndComputed.Count() - 1)
                    sbParameterList.Append(", ");
            }
			ISqlAdapter adapter = GetFormatter(connection);
			int id = adapter.Insert(connection, transaction, commandTimeout, name, sbColumnList.ToString(), sbParameterList.ToString(),  keyProperties, entityToInsert);
			return id;
        }
コード例 #5
0
ファイル: SqlMapperExtensions.cs プロジェクト: jalex/Swarm
        /// <summary>
        /// Inserts an entity into table "Ts" and returns identity id.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <param name="transaction">The transaction scope</param>
        /// <param name="commandTimeout">A command timeout</param>
        /// <returns>Identity of inserted entity</returns>
        public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
        {
            Type          type       = typeof(T);
            StringBuilder columnList = new StringBuilder();

            List <PropertyInfo> allProperties          = TypePropertiesCache(type).ToList();
            PropertyInfo        key                    = allProperties.First(prop => prop.Name.ToLowerInvariant() == "id");
            List <PropertyInfo> allPropertiesExceptKey = allProperties.Except(new[] { key }).ToList();

            for (int i = 0; i < allPropertiesExceptKey.Count; i++)
            {
                PropertyInfo property = allPropertiesExceptKey.ElementAt(i);
                columnList.Append(property.Name);
                if (i < allPropertiesExceptKey.Count - 1)
                {
                    columnList.Append(", ");
                }
            }

            StringBuilder parameterList = new StringBuilder();

            for (int i = 0; i < allPropertiesExceptKey.Count; i++)
            {
                PropertyInfo property = allPropertiesExceptKey.ElementAt(i);
                parameterList.AppendFormat("@{0}", property.Name);
                if (i < allPropertiesExceptKey.Count - 1)
                {
                    parameterList.Append(", ");
                }
            }
            ISqlAdapter adapter = GetFormatter(connection);
            int         id      = adapter.Insert(connection, transaction, commandTimeout, type.Name, columnList.ToString(), parameterList.ToString(), key, entityToInsert);

            return(id);
        }
コード例 #6
0
        /// <summary>
        /// Inserts an entity into table "T".
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        public static void Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
        {
            // Argument Validation
            if (connection == null)
            {
                throw new ArgumentNullException("connection", "connection cannot be null");
            }
            if (entityToInsert == null)
            {
                throw new ArgumentNullException("entityToInsert", "entityToInsert cannot be null");
            }

            InitializeCacheSweeper();

            var type = typeof(T);

            // Get TableName
            var name = GetTableName(type);

            // Build base sql
            var sbColumnList = new StringBuilder(null);

            // Get type details
            var allProperties               = TypePropertiesCache(type);
            var keyProperties               = KeyPropertiesCache(type);
            var computedProperties          = ComputedPropertiesCache(type);
            var allPropertiesExceptComputed = allProperties.Except(computedProperties);

            // Build column list
            for (var i = 0; i < allPropertiesExceptComputed.Count(); i++)
            {
                var property = allPropertiesExceptComputed.ElementAt(i);
                sbColumnList.AppendFormat("[{0}]", property.Name);
                if (i < allPropertiesExceptComputed.Count() - 1)
                {
                    sbColumnList.Append(", ");
                }
            }

            // Build parameter list
            var sbParameterList = new StringBuilder(null);

            for (var i = 0; i < allPropertiesExceptComputed.Count(); i++)
            {
                var property = allPropertiesExceptComputed.ElementAt(i);
                sbParameterList.AppendFormat("@{0}", property.Name);
                if (i < allPropertiesExceptComputed.Count() - 1)
                {
                    sbParameterList.Append(", ");
                }
            }

            // Execute
            ISqlAdapter adapter = GetFormatter(connection);

            adapter.Insert(connection, transaction, commandTimeout, name, sbColumnList.ToString(), sbParameterList.ToString(), keyProperties, entityToInsert);
        }
コード例 #7
0
        /// <summary>
        /// Inserts an entity into table "Ts" and returns identity id or number if inserted rows if inserting a list.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert, can be list of entities</param>
        /// <returns>Identity of inserted entity, or number of inserted rows if inserting a list</returns>
        public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null,
                                      int?commandTimeout = null, ISqlAdapter sqlAdapter = null) where T : class
        {
            var isList = false;

            var type = typeof(T);

            if (type.IsArray || type.IsGenericType)
            {
                isList = true;
                type   = type.GetGenericArguments()[0];
            }

            var name               = GetTableName(type);
            var sbColumnList       = new StringBuilder(null);
            var allProperties      = TypePropertiesCache(type);
            var keyProperties      = KeyPropertiesCache(type);
            var computedProperties = ComputedPropertiesCache(type);
            var allPropertiesExceptKeyAndComputed = allProperties.Except(keyProperties.Union(computedProperties)).ToList();

            for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count(); i++)
            {
                var property = allPropertiesExceptKeyAndComputed.ElementAt(i);
                sbColumnList.AppendFormat("[{0}]", property.Name);
                if (i < allPropertiesExceptKeyAndComputed.Count() - 1)
                {
                    sbColumnList.Append(", ");
                }
            }

            var sbParameterList = new StringBuilder(null);

            for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count(); i++)
            {
                var property = allPropertiesExceptKeyAndComputed.ElementAt(i);
                sbParameterList.AppendFormat("@{0}", property.Name);
                if (i < allPropertiesExceptKeyAndComputed.Count() - 1)
                {
                    sbParameterList.Append(", ");
                }
            }

            if (!isList)    //single entity
            {
                if (sqlAdapter == null)
                {
                    sqlAdapter = GetFormatter(connection);
                }
                return(sqlAdapter.Insert(connection, transaction, commandTimeout, name, sbColumnList.ToString(),
                                         sbParameterList.ToString(), keyProperties, entityToInsert));
            }

            //insert list of entities
            var cmd = String.Format("insert into {0} ({1}) values ({2})", name, sbColumnList, sbParameterList);

            return(connection.Execute(cmd, entityToInsert, transaction, commandTimeout));
        }
コード例 #8
0
        /// <summary>
        /// Inserts an entity into table "Ts" and returns identity id.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <returns>Identity of inserted entity</returns>
        public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
        {
            var type = typeof(T);

#if DEBUG
            if (type.IsAbstract)
            {
                throw new Exception("It's really weird to insert an abstract class");
            }
#endif

            if (TypeIsTablePerType(type))
            {
                return(TablePerTypeInsert(connection, entityToInsert, transaction, commandTimeout));
            }

            ISqlAdapter adapter = GetFormatter(connection);

            var name = GetTableName(type);


            var allProperties      = TypePropertiesCache(type);
            var keyProperties      = KeyPropertiesCache(type);
            var computedProperties = ComputedPropertiesCache(type);
            var allPropertiesExceptKeyAndComputed = allProperties.Except(keyProperties.Union(computedProperties)).ToArray();

            var columnList    = GenerateColumnList <T>(allPropertiesExceptKeyAndComputed, adapter);
            var parameterList = GenerateParameterList <T>(allPropertiesExceptKeyAndComputed);

#if DEBUG
            foreach (var key in keyProperties)
            {
                var value = key.GetValue(entityToInsert);
                if (value is int && (int)value != 0)
                {
                    throw new Exception("Trying to Insert but the [Id] is not 0");
                }
                else if (value is long && (long)value != 0L)
                {
                    throw new Exception("Trying to Insert but the [Id] is not 0");
                }
            }
#endif

            int id = adapter.Insert(connection, transaction, commandTimeout, name, columnList, parameterList, keyProperties, entityToInsert);
            return(id);
        }
コード例 #9
0
        /// <summary>
        /// Inserts an entity into table "Ts" and returns identity id.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <returns>Identity of inserted entity</returns>
        public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
        {
            var type = typeof(T);

            var name  = GetTableName(type);
            int value = findUpperLetter(name);

            if (value != -1)
            {
                var temp = name.Substring(0, value);
                temp = temp + "_" + name.Substring(value, name.Length - value);
                name = temp;
            }

            var sbColumnList = new StringBuilder(null);

            var allProperties          = TypePropertiesCache(type);
            var keyProperties          = KeyPropertiesCache(type);
            var allPropertiesExceptKey = allProperties.Except(keyProperties);

            for (var i = 0; i < allPropertiesExceptKey.Count(); i++)
            {
                var property = allPropertiesExceptKey.ElementAt(i);
                sbColumnList.Append(property.Name);
                if (i < allPropertiesExceptKey.Count() - 1)
                {
                    sbColumnList.Append(", ");
                }
            }

            var sbParameterList = new StringBuilder(null);

            for (var i = 0; i < allPropertiesExceptKey.Count(); i++)
            {
                var property = allPropertiesExceptKey.ElementAt(i);
                sbParameterList.AppendFormat("@{0}", property.Name);
                if (i < allPropertiesExceptKey.Count() - 1)
                {
                    sbParameterList.Append(", ");
                }
            }
            ISqlAdapter adapter = GetFormatter(connection);

            int id = adapter.Insert(connection, transaction, commandTimeout, name.ToUpper(new CultureInfo("en-US", false)), sbColumnList.ToString(), sbParameterList.ToString(), keyProperties, entityToInsert);

            return(id);
        }
コード例 #10
0
        /// <summary>
        /// Inserts entities into table "Ts".
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <returns>Identity of inserted entity</returns>
        public static void Insert <T>(this IDbConnection connection, IEnumerable <T> entities, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
        {
            var type = typeof(T);

            var name = GetTableName(type);

            var sbColumnList = new StringBuilder(null);

              
            var allProperties          = TypePropertiesCache(type);
            var keyProperties          = KeyPropertiesCache(type);
            var allPropertiesExceptKey = allProperties.Except(keyProperties);

            for (var i = 0; i < allPropertiesExceptKey.Count(); i++)
            {
                var property = allPropertiesExceptKey.ElementAt(i);
                   
                sbColumnList.AppendFormat("{0}", property.Name);

                if (i < allPropertiesExceptKey.Count() - 1)
                {
                        
                    sbColumnList.Append(", ");
                }
            }

              
            var sbParameterList = new StringBuilder(null);
              
            for (var i = 0; i < allPropertiesExceptKey.Count(); i++)
            {
                var property = allPropertiesExceptKey.ElementAt(i);
                sbParameterList.AppendFormat("@{0}", property.Name);
                if (i < allPropertiesExceptKey.Count() - 1)
                {
                    sbParameterList.Append(", ");
                }
            }
              
            ISqlAdapter adapter = GetFormatter(connection);
                      
            foreach (var entityToInsert in entities)
            {
                adapter.Insert(connection, transaction, commandTimeout, name, sbColumnList.ToString(), sbParameterList.ToString(), keyProperties, entityToInsert);
            }
        }
コード例 #11
0
        /// <summary>
        /// Inserts an entity into table "Ts" and returns identity id.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <returns>Identity of inserted entity</returns>
        public static long InsertWithKey <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
        {
            var type = typeof(T);

            var name = GetTableName(type);

            var sbColumnList = new StringBuilder(null);
              
            var allProperties = TypePropertiesCache(type);

            for (var i = 0; i < allProperties.Count(); i++)
            {
                var property = allProperties.ElementAt(i);
                   
                sbColumnList.AppendFormat("{0}", property.Name);

                if (i < allProperties.Count() - 1)
                {
                        
                    sbColumnList.Append(", ");
                }
            }
              
            var sbParameterList = new StringBuilder(null);
              
            for (var i = 0; i < allProperties.Count(); i++)
            {
                var property = allProperties.ElementAt(i);
                sbParameterList.AppendFormat("@{0}", property.Name);
                if (i < allProperties.Count() - 1)
                {
                    sbParameterList.Append(", ");
                }
            }
              
            ISqlAdapter adapter = GetFormatter(connection);
              
            int id = adapter.Insert(connection, transaction, commandTimeout, name, sbColumnList.ToString(), sbParameterList.ToString(), new List <PropertyInfo>(), entityToInsert);
              
            return(id);
        }
コード例 #12
0
        /// <summary>
        /// Inserts an entity into table "Ts" and returns identity id.
        /// </summary>
        /// <param name="connection">Open SqlConnection</param>
        /// <param name="entityToInsert">Entity to insert</param>
        /// <returns>Identity of inserted entity</returns>
        public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
        {
            var         type    = typeof(T);
            ISqlAdapter adapter = GetFormatter(connection);

            var name = GetTableName(type);

            var sbColumnList = new StringBuilder(null);

            var allProperties = TypePropertiesCache(type);
            var keyProperties = KeyPropertiesCache(type).ToList();

            for (var i = keyProperties.Count - 1; i >= 0; i--)
            {
                if (null != keyProperties.ElementAt(i).GetValue(entityToInsert, null))
                {
                    keyProperties.RemoveAt(i);
                }
            }
            var allPropertiesExceptKey = allProperties.Except(keyProperties);

            for (var i = 0; i < allPropertiesExceptKey.Count(); i++)
            {
                var property = allPropertiesExceptKey.ElementAt(i);
                //edit by leo 为空的属性不赋值
                if (null == property.GetValue(entityToInsert, null))
                {
                    continue;
                }
                //sbColumnList.AppendFormat("[{0}]", property.Name);    //by liuliqiang  为解决数据库兼容性
                sbColumnList.AppendFormat("{0}, ", property.Name);
            }
            sbColumnList.Remove(sbColumnList.Length - 2, 2);

            var sbParameterList = new StringBuilder(null);

            for (var i = 0; i < allPropertiesExceptKey.Count(); i++)
            {
                var property = allPropertiesExceptKey.ElementAt(i);
                //edit by leo 为空的属性不赋值
                if (null == property.GetValue(entityToInsert, null))
                {
                    continue;
                }
                sbParameterList.AppendFormat("{1}{0}, ", property.Name, adapter.PreParamName);
            }
            sbParameterList.Remove(sbParameterList.Length - 2, 2);

            bool wasClosed = connection.State == ConnectionState.Closed;

            try
            {
                if (wasClosed)
                {
                    connection.Open();
                }
                int id = adapter.Insert(connection, transaction, commandTimeout, name, sbColumnList.ToString(), sbParameterList.ToString(), keyProperties, entityToInsert);
                return(id);
            }
            finally
            {
                if (wasClosed)
                {
                    connection.Close();
                }
            }
        }
コード例 #13
0
        public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = default(int?)) where T : class
        {
            bool flag = false;
            Type type = typeof(T);

            if (type.IsArray)
            {
                flag = true;
                type = type.GetElementType();
            }
            else if (type.IsGenericType())
            {
                flag = true;
                type = type.GetGenericArguments()[0];
            }
            string              tableName     = GetTableName(type);
            StringBuilder       stringBuilder = new StringBuilder(null);
            List <PropertyInfo> first         = TypePropertiesCache(type);
            List <PropertyInfo> list          = KeyPropertiesCache(type);
            List <PropertyInfo> second        = ComputedPropertiesCache(type);
            List <PropertyInfo> list2         = first.Except(list.Union(second)).ToList();
            ISqlAdapter         formatter     = GetFormatter(connection);

            for (int i = 0; i < list2.Count; i++)
            {
                PropertyInfo propertyInfo = list2.ElementAt(i);
                formatter.AppendColumnName(stringBuilder, propertyInfo.Name);
                if (i < list2.Count - 1)
                {
                    stringBuilder.Append(", ");
                }
            }
            StringBuilder stringBuilder2 = new StringBuilder(null);

            for (int j = 0; j < list2.Count; j++)
            {
                PropertyInfo propertyInfo2 = list2.ElementAt(j);
                stringBuilder2.AppendFormat("@{0}", propertyInfo2.Name);
                if (j < list2.Count - 1)
                {
                    stringBuilder2.Append(", ");
                }
            }
            bool num = connection.State == ConnectionState.Closed;

            if (num)
            {
                connection.Open();
            }
            int num2;

            if (!flag)
            {
                num2 = formatter.Insert(connection, transaction, commandTimeout, tableName, stringBuilder.ToString(), stringBuilder2.ToString(), list, entityToInsert);
            }
            else
            {
                string text = string.Format("insert into {0} ({1}) values ({2})", tableName, stringBuilder, stringBuilder2);
                num2 = SqlMapper.Execute(connection, text, (object)entityToInsert, transaction, commandTimeout, (CommandType?)null);
            }
            if (num)
            {
                connection.Close();
            }
            return(num2);
        }