检测在.NET中的3G互联网连接

问题描述

我们的应用程序下载使用RSS的互联网数据，但正在对3G网络连接设备的连接问题。我们要检测3G，EDGE，GPRS连接，这样我们就可以改变应用程序行为的连接，显示警告或状态。

Our application downloads data from the internet using RSS but is having connection problems on machines connecting with 3G. We'd like to detect 3G,EDGE,GPRS connections so that we can change the application behaviour, display warnings or status of connection.

这将如何做？

推荐答案

的的在 System.Net.NetworkInformation 命名空间中的类应该是一些使用你（更具体地， GetAllNetworkInterfaces 的方法。一个例子显示链接的MSDN页面，演示了如何获取类型，地址，运行状态上，等关于每一个网络接口的信息。

The NetworkInterface class in the System.Net.NetworkInformation namespace should be of some use to you (more specifically, the GetAllNetworkInterfaces method. An example is shown on the linked MSDN page that demonstrates how to get the type, address, operational status, and other information about every network interface.

减少MSDN例子的版本：

Reduced version of MSDN example:

public static void ShowNetworkInterfaces()
{
    IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties();
    NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
    Console.WriteLine("Interface information for {0}.{1}     ",
            computerProperties.HostName, computerProperties.DomainName);
    if (nics == null || nics.Length < 1)
    {
        Console.WriteLine("  No network interfaces found.");
        return;
    }

    Console.WriteLine("  Number of interfaces .................... : {0}", nics.Length);
    foreach (NetworkInterface adapter in nics)
    {
        IPInterfaceProperties properties = adapter.GetIPProperties();
        Console.WriteLine();
        Console.WriteLine(adapter.Description);
        Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length,'='));
        Console.WriteLine("  Interface type .......................... : {0}", adapter.NetworkInterfaceType);
        Console.WriteLine("  Physical Address ........................ : {0}",
                   adapter.GetPhysicalAddress().ToString());
        Console.WriteLine("  Operational status ...................... : {0}",
            adapter.OperationalStatus);

        Console.WriteLine();
    }
}

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