Windows 8 Store Apps学习(60) 通信: 获取网络信息, 序列化和反序列化

介绍

重新想象 Windows 8 Store Apps 之 通信

获取网络信息

序列化 - json

序列化 - xml

序列化 - rss atom

示例

1、演示如何获取网络的相关信息

Communication/NetworkInfo.xaml.cs

/*
 * 演示如何获取网络的相关信息
 */

using System;
using System.Collections.Generic;
using Windows.Networking.Connectivity;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;
using System.Linq;

namespace XamlDemo.Communication
{
    public sealed partial class NetworkInfo : Page
    {
        public NetworkInfo()
        {
            this.InitializeComponent();
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            /*
             * NetworkInformation - 用于对网络信息的访问
             */

            // 获取当前用于 Internet 连接的 ConnectionProfile 对象
            ConnectionProfile connectionProfile = NetworkInformation.GetInternetConnectionProfile();

            if (connectionProfile == null)
                return;

            // 此连接配置的名称
            lblMsg.Text = "ProfileName: " + connectionProfile.ProfileName;
            lblMsg.Text += Environment.NewLine;

            // 此连接的网络连接级别（Windows.Networking.Connectivity.NetworkConnectivityLevel 枚举）
            //     None - 无连接
            //     LocalAccess - 仅允许访问本地网络
            //     ConstrainedInternetAccess - 受限的 internet 访问
            //     InternetAccess - 本地和 internet 访问
            lblMsg.Text += "NetworkConnectivityLevel: " + connectionProfile.GetNetworkConnectivityLevel();
            lblMsg.Text += Environment.NewLine;

            // 网络状态发生变化时所触发的事件
            NetworkInformation.NetworkStatusChanged += NetworkInformation_NetworkStatusChanged;

            NetworkAdapter networkAdapter = connectionProfile.NetworkAdapter;
            if (networkAdapter != null)
            {
                lblMsg.Text += "NetworkAdapterId: " + networkAdapter.NetworkAdapterId; // 网络适配器 ID
                lblMsg.Text += Environment.NewLine;
                lblMsg.Text += "InboundMaxBitsPerSecond: " + networkAdapter.InboundMaxBitsPerSecond; // 最大入站数据传输速率（单位：bit/s）
                lblMsg.Text += Environment.NewLine;
                lblMsg.Text += "OutboundMaxBitsPerSecond: " + networkAdapter.OutboundMaxBitsPerSecond; // 最大出站数据传输速率（单位：bit/s）
                lblMsg.Text += Environment.NewLine;
                lblMsg.Text += "NetworkTypes: " + networkAdapter.NetworkItem.GetNetworkTypes(); // 网络类型
                lblMsg.Text += Environment.NewLine;
            }

            lblMsg.Text += Environment.NewLine;

            // 获取所有可用连接
            IReadOnlyList<ConnectionProfile> connectionProfiles = NetworkInformation.GetConnectionProfiles();
            foreach (ConnectionProfile cp in connectionProfiles)
            {
                lblMsg.Text += "ProfileName: " + cp.ProfileName;
                lblMsg.Text += Environment.NewLine;

                // 获取此连接的指定时间段内的本地数据的使用情况
                DataUsage dataUsage = cp.GetLocalUsage(DateTime.Now.AddHours(-1), DateTime.Now);

                lblMsg.Text += "BytesSent: " + dataUsage.BytesSent; // 已发送的字节数
                lblMsg.Text += Environment.NewLine;
                lblMsg.Text += "BytesReceived: " + dataUsage.BytesReceived; // 已收到的字节数
                lblMsg.Text += Environment.NewLine;
            }

            // 以下是一些不常用的东西
            ConnectionCost connectionCost = connectionProfile.GetConnectionCost();
            DataPlanStatus dataPlanStatus = connectionProfile.GetDataPlanStatus();
            NetworkSecuritySettings networkSecuritySettings = connectionProfile.NetworkSecuritySettings;
            IReadOnlyList<LanIdentifier> lanIdentifiers = NetworkInformation.GetLanIdentifiers();
        }

        void NetworkInformation_NetworkStatusChanged(object sender)
        {

        }
    }
}

用于演示序列化和反序列化的实体类

Communication/Serializer/Product.cs

/*
 * 用于演示序列化和反序列化的实体类
 *
 * 通过 DataContractJsonSerializer 或 DataContractSerializer 做序列化和反序列化时

，其支持 DataContract, DataMember, KnownType
 * 当然如果都不声明 DataContract, DataMember 也没问题
 */

using System;
using System.Collections.Generic;
using System.Runtime.Serialization;

namespace XamlDemo.Communication.Serializer
{
    [DataContract(Name="product")]
    public class Product
    {
        [DataMember(Name = "productId", IsRequired = true, Order = 1)]
        public int ProductId { get; set; }

        [DataMember(Name = "name", IsRequired = true, Order = 2)]
        public string Name { get; set; }

        public decimal Price { get; set; }

        [DataMember(Name = "createTime", IsRequired = true, Order = 3)]
        public DateTime CreateTime { get; set; }

        public static List<Product> GetProducts()
        {
            List<Product> products = new List<Product>();
            for (int i = 0; i < 5; i++)
            {
                products.Add(new Product
                {
                    ProductId = i,
                    Name = "name: " + i.ToString().PadLeft(4, '0'),
                    Price = i * 100,
                    CreateTime = DateTime.Now.AddDays(-i)
                });
            }

            return products;
        }
    }
}

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