C#实现日志

using System;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;

namespace CSharpUtilHelpV2
{
/// <summary>
/// 日志类型枚举
/// </summary>
public enum LogType
{
/// <summary>
/// 一般输出
/// </summary>
Trace,
/// <summary>
/// 警告
/// </summary>
Warning,
/// <summary>
/// 错误
/// </summary>
Error,
/// <summary>
/// SQL
/// </summary>
SQL
}
/// <summary>
/// 基于.NET 2.0日志工具类
/// </summary>
public class LogToolV2
{
private static readonly Thread LogTask;
private static readonly ThreadSafeQueueV2<string> LogColQueue;//自定义线程安全的Queue
private static readonly object SyncRoot;
private static readonly string FilePath;
private static readonly long BackFileSize_MB = 2;//超过2M就开始备份日志文件
static LogToolV2()
{
SyncRoot = new object();
FilePath = AppDomain.CurrentDomain.SetupInformation.ApplicationBase + "Log\\";
LogTask = new Thread(WriteLog);
LogColQueue = new ThreadSafeQueueV2<string>();
LogTask.Start();
Debug.WriteLine("Log Start......");
}
/// <summary>
/// 记录日志
/// </summary>
/// <param name="msg">日志内容</param>
public static void Log(string msg)
{
string _msg = string.Format("{0} : {2}", DateTime.Now.ToString("HH:mm:ss"), msg);
LogColQueue.Enqueue(msg);
}
/// <summary>
/// 记录日志
/// </summary>
/// <param name="msg">日志内容</param>
/// <param name="type">日志类型</param>
public static void Log(string msg, LogType type)
{
string _msg = string.Format("{0} {1}: {2}", DateTime.Now.ToString("HH:mm:ss"), type, msg);
LogColQueue.Enqueue(_msg);
}
/// <summary>
/// 记录日志
/// </summary>
/// <param name="ex">异常</param>
public static void Log(Exception ex)
{
if (ex != null)
{
string _newLine = Environment.NewLine;
StringBuilder _builder = new StringBuilder();
_builder.AppendFormat("{0}: {1}{2}", DateTime.Now.ToString("HH:mm:ss"), ex.Message, _newLine);
_builder.AppendFormat("{0}{1}", ex.GetType(), _newLine);
_builder.AppendFormat("{0}{1}", ex.Source, _newLine);
_builder.AppendFormat("{0}{1}", ex.TargetSite, _newLine);
_builder.AppendFormat("{0}{1}", ex.StackTrace, _newLine);
LogColQueue.Enqueue(_builder.ToString());
}
}
private static void WriteLog()
{
while (true)
{
if (LogColQueue.Count() > 0)
{
string _msg = LogColQueue.Dequeue();
Monitor.Enter(SyncRoot);
if (!CreateDirectory()) continue;
string _path = string.Format("{0}{1}.log", FilePath, DateTime.Now.ToString("yyyyMMdd"));
Monitor.Exit(SyncRoot);
lock (SyncRoot)
{
if (CreateFile(_path))
ProcessWriteLog(_path, _msg);//写入日志到文本
}
ProcessBackLog(_path);//日志备份
}
}
}
private static void ProcessBackLog(string path)
{
lock (SyncRoot)
{
if (FileToolV2.GetMBSize(path) > BackFileSize_MB)
{
FileToolV2.CopyToBak(path);
}
}
}
private static void ProcessWriteLog(string path, string msg)
{
try
{
StreamWriter _sw = File.AppendText(path);
_sw.WriteLine(msg);
_sw.Flush();
_sw.Close();
}
catch (Exception ex)
{
Debug.WriteLine(string.Format("写入日志失败，原因:{0}", ex.Message));
}
}
private static bool CreateFile(string path)
{
bool _result = true;
try
{
if (!File.Exists(path))
{
FileStream _files = File.Create(path);
_files.Close();
}
}
catch (Exception)
{
_result = false;
}
return _result;
}
private static bool CreateDirectory()
{
bool _result = true;
try
{
if (!Directory.Exists(FilePath))
{
Directory.CreateDirectory(FilePath);
}
}
catch (Exception)
{
_result = false;
}
return _result;
}

}
}

using CSharpUtilHelpV2;
using System;
using System.Diagnostics;
using System.Threading;

namespace LogUtilHelpV2Test
{
class Program
{
static void Main(string[] args)
{
try
{
Debug.WriteLine("-------------");
Action _writeLog = delegate()
{
for (int i = 0; i < 10000; i++)
LogToolV2.Log(Guid.NewGuid().ToString(), LogType.Trace);
};
Thread _wireteLogTask1 = new Thread(new ThreadStart(_writeLog));
_wireteLogTask1.Start();

Thread _wireteLogTask2 = new Thread(new ThreadStart(_writeLog));
_wireteLogTask2.Start();

//throw new Exception("test  aaa bb cc");
}
catch (Exception ex)
{
LogToolV2.Log(ex);
Console.WriteLine(ex.Message.Trim());
}
finally
{
Console.WriteLine("ok");
Console.ReadLine();
}
}
}
}

WlanClient client = new WlanClient();
foreach ( WlanClient.WlanInterface wlanIface in client.Interfaces )
{
// Lists all available networks
Wlan.WlanAvailableNetwork[] networks = wlanIface.GetAvailableNetworkList( 0 );
foreach ( Wlan.WlanAvailableNetwork network in networks )
{
Console.WriteLine( "Found network with SSID {0}.", GetStringForSSID(network.dot11Ssid));
}
}

static string GetStringForSSID(Wlan.Dot11Ssid ssid)
{
return Encoding.ASCII.GetString( ssid.SSID, 0, (int) ssid.SSIDLength );
}

RSSI (or "Radio (Received) Signal Strength Indicator") are in units of 'dB' (decibel) or the similar 'dBm' (dB per milliwatt) (See dB vs. dBm) in which the smaller magnitude negative numbers have the highest signal strength, or quality.

Therefore, the conversion between quality (percentage) and dBm is as follows:
quality = 2 * (dBm + 100)  where dBm: [-100 to -50]

dBm = (quality / 2) - 100  where quality: [0 to 100]

Pseudo Code (with example clamping):
// dBm to Quality:
if(dBm <= -100)
quality = 0;
else if(dBm >= -50)
quality = 100;
else
quality = 2 * (dBm + 100);

// Quality to dBm:
if(quality <= 0)
dBm = -100;
else if(quality >= 100)
dBm = -50;
else
dBm = (quality / 2) - 100;