C# DataTable转List And List转DataTable

// DataTable转List： IList<HousesEntity> Ilist = TableAndList.ConvertTo<HousesEntity>(dt);

    public static class TableAndList
    {

        public  static DataTable ConvertTo<T>(IList<T> list)
        {
            DataTable table = CreateTable<T>();
            Type entityType = typeof(T);
            PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(entityType);
            foreach (T item in list)
            {
                DataRow row = table.NewRow();
                foreach (PropertyDescriptor prop in properties)
                    row[prop.Name] = prop.GetValue(item);
                table.Rows.Add(row);
            }
            return table;
        }
        public static IList<T> ConvertTo<T>(IList<DataRow> rows)
        {
            IList<T> list = null;
            if (rows != null)
            {
                list = new List<T>();
                foreach (DataRow row in rows)
                {
                    T item = CreateItem<T>(row);
                    list.Add(item);
                }
            }
            return list;
        }
        /// <summary>
        /// DataTable To List
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="table"></param>
        /// <returns></returns>
        public static IList<T> ConvertTo<T>(DataTable table)
        {
            if (table == null)
                return null;

            List<DataRow> rows = new List<DataRow>();
            foreach (DataRow row in table.Rows)
                rows.Add(row);

            return ConvertTo<T>(rows);
        }
        public static T CreateItem<T>(DataRow row)
        {
            string columnName;
            T obj = default(T);
            if (row != null)
            {
                obj = Activator.CreateInstance<T>();
                foreach (DataColumn column in row.Table.Columns)
                {
                    columnName = column.ColumnName;
                   //第一行如果是Rows 则跳过
                    if (columnName=="Rows")
                    {
                        continue;
                    }

                    //Get property with same columnName
                    PropertyInfo prop = obj.GetType().GetProperty(columnName);
                    try
                    {
                        //Get value for the column
                        object value = (row[columnName].GetType() == typeof(DBNull))
                        ? null : row[columnName];
                        //Set property value
                        if (prop.CanWrite)    //判断其是否可写
                            prop.SetValue(obj, value, null);
                    }
                    catch
                    {
                        throw;
                        //Catch whatever here
                    }
                  //  }
                }
            }
            return obj;
        }
        public static DataTable CreateTable<T>()
        {
            Type entityType = typeof(T);
            DataTable table = new DataTable(entityType.Name);
            PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(entityType);

            foreach (PropertyDescriptor prop in properties)
                table.Columns.Add(prop.Name, prop.PropertyType);
            return table;
        }

    }