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【CSharp】多线程写入同一个文件

作者:Gordon / 发布于2015/1/26/ 314


	namespace WfpApp
	{
	 public partial class Form2 : Form
	 {
	 object obj = new object();

	 public Form2()
	 {
	 InitializeComponent();

	 System.Threading.Thread thread;
	 string[] users = new string[] { "zkk", "admin", "administrator", "soft", "iany", "nec", "necsl" };
	 for (int i = 0; i < users.Length; i++)
	 {
	 thread = new System.Threading.Thread(new System.Threading.ParameterizedThreadStart(WriteLock));
	 thread.Start(users[i]);
	 }

	 }

	
	 public void WriteThread(object user)
	 {
	 string path = System.Windows.Forms.Application.StartupPath + "\\app\\";
	 if (!System.IO.Directory.Exists(path))
	 System.IO.Directory.CreateDirectory(path);

	 path = path + "\\" + DateTime.Now.ToString("yyyyMMdd") + ".txt";

	 StringBuilder sb = new StringBuilder();
	 sb.AppendLine("----------------------------" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "--------------------------");
	 sb.AppendLine(user.ToString());
	 sb.AppendLine("---------------------------------------------------------------------------------");
	 sb.AppendLine();
	 //if (!System.IO.File.Exists(path))
	 // System.IO.File.Create(path).Close();

	 System.IO.FileStream fileStream = new System.IO.FileStream(path, System.IO.FileMode.Append, System.IO.FileAccess.Write, System.IO.FileShare.ReadWrite);
	 System.IO.StreamWriter sw = new System.IO.StreamWriter(fileStream, Encoding.Default);
	 sw.Write(sb.ToString());
	 sw.Close();
	 sw.Dispose();
	 fileStream.Close();
	 fileStream.Dispose();
	 }

	 public void WriteLock(object user)
	 {
	 lock (obj)
	 {
	 string path = System.Windows.Forms.Application.StartupPath + "\\app\\";
	 if (!System.IO.Directory.Exists(path))
	 System.IO.Directory.CreateDirectory(path);

	 path = path + "\\" + DateTime.Now.ToString("yyyyMMdd") + ".txt";

	 StringBuilder sb = new StringBuilder();
	 sb.AppendLine("----------------------------" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "--------------------------");
	 sb.AppendLine(user.ToString());
	 sb.AppendLine("---------------------------------------------------------------------------------");
	 sb.AppendLine();
	 if (!System.IO.File.Exists(path))
	 System.IO.File.Create(path).Close();

	 System.IO.FileStream fileStream = new System.IO.FileStream(path, System.IO.FileMode.Append, System.IO.FileAccess.Write);
	 System.IO.StreamWriter sw = new System.IO.StreamWriter(fileStream, Encoding.Default);
	 sw.Write(sb.ToString());
	 sw.Close();
	 sw.Dispose();
	 fileStream.Close();
	 fileStream.Dispose();

	 }

	 }
	 }
	}

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