c#输出指定信息到文本文件中（追加方式）

         /// <summary>
         /// 输出指定信息到文本文件
         /// </summary>
         /// <param name="msg">输出信息</param>
         public void WriteMessage(string msg)
         {
             using (FileStream fs = new FileStream(@"d:\test.txt", FileMode.OpenOrCreate, FileAccess.Write))
             {
                 using (StreamWriter sw = new StreamWriter(fs))
                 {
                     sw.BaseStream.Seek(, SeekOrigin.End);
                     sw.WriteLine("{0}\n", msg, DateTime.Now);
                     sw.Flush();
                 }
             }
         }

         /// <summary>
         /// 输出指定信息到文本文件
         /// </summary>
         /// <param name="path">文本文件路径</param>
         /// <param name="msg">输出信息</param>
         public void WriteMessage(string path,string msg)
         {
             using (FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write))
             {
                 using (StreamWriter sw = new StreamWriter(fs))
                 {
                     sw.BaseStream.Seek(, SeekOrigin.End);
                     sw.WriteLine("{0}\n", msg, DateTime.Now);
                     sw.Flush();
                 }
             }
         }    

使用方法:

             var msg ="测试数据";
             var path = @"d:\test.txt";
             WriteMessage(path, msg);