标签:文件 targe write names sts create startup out 写入
自己整理了一个简单写日志的类,方便以后再次用到。
说明:CS程序,程序启动目录下,自动创建Log目录,写日志。日志按天记录,每天的日志作为一个txt文件保存。
/// <summary> /// 日志管理功能 /// //以天建立日志文件, /// </summary> public class LogManager { private static string LogDirectory = Application.StartupPath + @"\Log\"; /// <summary> /// 保存的最多日志数量 /// </summary> private static int MaxLogCount = 365; public static void Write(string msg) { try { DeleteLog(); if (!System.IO.Directory.Exists(LogDirectory)) { System.IO.Directory.CreateDirectory(LogDirectory); } string name = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString().PadLeft(2, ‘0‘) + DateTime.Now.Day.ToString().PadLeft(2, ‘0‘); string datapath = LogDirectory + name + ".txt"; if (System.IO.File.Exists(datapath))//追加 { using (FileStream fs = new FileStream(datapath, FileMode.Append)) { using (StreamWriter sw = new StreamWriter(fs)) { //开始写入 sw.WriteLine("\n"); sw.WriteLine("当前时间:" + DateTime.Now.ToString()); sw.WriteLine("日志信息:" + msg); //清空缓冲区 sw.Flush(); //关闭流 sw.Close(); fs.Close(); } } } else//创建 { using (FileStream fs = new FileStream(datapath, FileMode.Create)) { using (StreamWriter sw = new StreamWriter(fs)) { //开始写入 sw.WriteLine("当前时间:" + DateTime.Now.ToString()); sw.WriteLine("日志信息:" + msg); //清空缓冲区 sw.Flush(); //关闭流 sw.Close(); fs.Close(); } } } } catch { } } public static void Write(Exception ex) { try { DeleteLog(); if (!System.IO.Directory.Exists(LogDirectory)) { System.IO.Directory.CreateDirectory(LogDirectory); } string name = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString().PadLeft(2, ‘0‘) + DateTime.Now.Day.ToString().PadLeft(2, ‘0‘); string datapath = LogDirectory + name + ".txt";//文件名格式为:20170606.txt if (System.IO.File.Exists(datapath))//追加 { using (FileStream fs = new FileStream(datapath, FileMode.Append)) { using (StreamWriter sw = new StreamWriter(fs)) { //开始写入 sw.WriteLine("\n"); sw.WriteLine("当前时间:" + DateTime.Now.ToString()); sw.WriteLine("异常信息:" + ex.Message); sw.WriteLine("异常对象:" + ex.Source); sw.WriteLine("调用堆栈:" + ex.StackTrace); sw.WriteLine("触发方法:" + ex.TargetSite); //清空缓冲区 sw.Flush(); //关闭流 sw.Close(); fs.Close(); } } } else//创建 { using (FileStream fs = new FileStream(datapath, FileMode.Create)) { using (StreamWriter sw = new StreamWriter(fs)) { //开始写入 sw.WriteLine("当前时间:" + DateTime.Now.ToString()); sw.WriteLine("异常信息:" + ex.Message); sw.WriteLine("异常对象:" + ex.Source); sw.WriteLine("调用堆栈:" + ex.StackTrace); sw.WriteLine("触发方法:" + ex.TargetSite); //清空缓冲区 sw.Flush(); //关闭流 sw.Close(); fs.Close(); } } } } catch { } } /// <summary> /// 删除日志 /// </summary> private static void DeleteLog() { DirectoryInfo dic = new DirectoryInfo(LogDirectory); //不必每天都删除日志,整10天删除 if (!(DateTime.Now.Day % 10 == 0)) { return; } if (dic.Exists) { var files = dic.GetFiles(); if (files.Length < MaxLogCount) return; List<int> names = new List<int>(); for (int i = 0; i < files.Length; i++) { string strname = Path.GetFileNameWithoutExtension(files[i].Name); int name; if (int.TryParse(strname, out name)) { names.Add(name); } } names.Sort();//升序 //names.Reverse();//降序 for (int i = 0; i < names.Count - MaxLogCount; i++) { string path = System.IO.Path.Combine(LogDirectory, names[i].ToString() + ".txt"); File.Delete(path); } } } }
标签:文件 targe write names sts create startup out 写入
原文地址:https://www.cnblogs.com/zwcoding/p/9251273.html