日志记录代码

using System; 
using System.IO; 
  
public class Log 
{ 
    public Log() 
    { 
        logName = ""; 
    } 
    public Log(string prefilename) 
    { 
        logName = prefilename; 
    } 
   private  string path = System.AppDomain.CurrentDomain.BaseDirectory + "Result\\"; 
    public   void clearTextfile() 
    { 
  
        try
        { 
            if (Directory.Exists(path)) 
            { 
                DirectoryInfo dir = new DirectoryInfo(path); 
                FileInfo[] txtfiles = dir.GetFiles("*.txt"); 
                foreach (FileInfo f in txtfiles) 
                { 
                    File.Delete(f.FullName); 
                } 
            } 
        } 
        catch
        { 
        } 
    } 
    public string logName{ get;set;} 
    public   void WriteLog(string msg) 
    { 
        try
        { 
             
            if (!Directory.Exists(path)) 
                Directory.CreateDirectory(path); 
            string logfilename = path +logName+ ".txt"; 
  
            FileStream fs = null; 
            if (File.Exists(logfilename)) //如果文件存在就追加日志记录  
            { 
                fs = new FileStream(logfilename, FileMode.Append, FileAccess.Write); 
            } 
            else //如果不存在，就创建日志文件  
            { 
                  
                fs = new FileStream(logfilename, FileMode.Create, FileAccess.Write); 
            } 
            StreamWriter sw = new StreamWriter(fs); 
            sw.WriteLine(msg); 
            sw.Flush(); 
            sw.Close(); 
            fs.Close(); 
        } 
        catch (Exception ex) 
        { 
            throw ex; 
        } 
    } 
}
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