（转） C#网速监测

使用PerformanceCounterCategory类，PerformanceCounter类。

获取Network Interface性能计数器实例。

PerformanceCounterCategory category = new PerformanceCounterCategory("Network Interface");

获取速度

adapter.dlCounter = new PerformanceCounter("Network Interface", "Bytes Received/sec", name);

 

在调试中：PerformanceCounterCategory category = new PerformanceCounterCategory("Network Interface");

语句报错：“无法加载计数器名称数据，因为从注册表读取的索引“”无效。”

解决方法：

先查看性能监视器（ 命令：perfmon ）, 会发现确实有错。

cmd 输入： lodctr /r  即可修复。

 

            try
            {
                #region 输出全部"categoryName性能计数器类别名称"
                PerformanceCounterCategory[] ArrayCategories = PerformanceCounterCategory.GetCategories();
                foreach (var tempCategories in ArrayCategories)
                {
                    Console.WriteLine(tempCategories.CategoryName);
                }

                Console.WriteLine("==============================================");
                #endregion
                //性能计数器关联的性能计数器类别（性能对象）的名称
                string netCategoryName = "Network Interface";
                PerformanceCounterCategory category = new PerformanceCounterCategory(netCategoryName);
                string[] ArrayInstanceNames = category.GetInstanceNames();
                //性能对象实例
                foreach (var tempInstanceName in ArrayInstanceNames)
                {
                    Console.WriteLine(tempInstanceName);
                    // This one exists on every computer.  
                    if (tempInstanceName == "MS TCP Loopback interface")
                        continue;

                    PerformanceCounter[] ArrayCounters = category.GetCounters(tempInstanceName);
                    #region 输出全部"categoryName性能计数器类别名称"
                    foreach (var tempCounters in ArrayCounters)
                    {
                        Console.WriteLine(tempCounters.CounterName);
                    }
                    Console.WriteLine("==============================================");
                    #endregion
                    // Create an instance of NetworkAdapter class, and create performance counters for it.  
                    NetworkAdapter adapter = new NetworkAdapter(tempInstanceName);
                    //categoryName性能计数器类别名称，counterName计数器名称，instanceName性能对象实例名称
                    adapter.dlCounter = new PerformanceCounter(netCategoryName, "Bytes Received/sec", tempInstanceName);
                    adapter.ulCounter = new PerformanceCounter(netCategoryName, "Bytes Sent/sec", tempInstanceName);
                    this.adapters.Add(adapter); // Add it to ArrayList adapter  
                }
            }
            catch (Exception e)
            {
                throw e;
            }

 

参考：http://blog.csdn.net/luols/article/details/5844061

　　   http://blog.csdn.net/yenange/article/details/47831143

　　   http://www.cnblogs.com/xh831213/archive/2008/06/12/1218234.html