Asp.net讀取和寫入txt檔案方法__.net

        string strfile= "asp.txt";                string strout=string.Empty;        if (!File.Exists(System.Web.HttpContext.Current.Server.MapPath(strfile)))        {        }        else        {            using(StreamReader sr = new StreamReader(System.Web.HttpContext.Current.Server.MapPath(strfile), System.Text.Encoding.Default))            {               strout= sr.ReadToEnd();           }                    }        Response.Write("ssss");

// =============================== 【txt文檔比較小，內容很少的時候的一種寫法】        using system.test;        string txt = File.ReadAllText("d:\\aaa.sys", Encoding.Default);        Response.Write("【" + txt + "】");

System.IO.File.WriteAllText("e:\\asp_1.txt", "I LOVE YOU!wang na");  // 一定要絕對路徑

string txtPath = Server.MapPath("~\\Public\\AttInfo\\") + "Test.txt"; StreamWriter sw = new StreamWriter(txtPath, false, System.Text.Encoding.Default); sw.WriteLine("Hello World"); sw.WriteLine(""); //輸出空行 sw.WriteLine("ASP.NET網路編程。"); sw.Close();