错误日志

public void WriteFile(string strText, string textName)
{
　　string time = DateTime.Now.ToString("yyyy-MM");
　　textName = time + "\" + textName;
　　DirectoryInfo di = new DirectoryInfo(@"D:日志" + time);
　　if (!di.Exists) { di.Create(); }
　　StreamWriter writer = new StreamWriter(@"D:日志" + textName + ".txt", true);

　　writer.WriteLine(strText);

　　writer.Close();

}