文本文件的读写

public bool FileWrite(string path,StringBuilder sb)
        {
            FileStream fs =null;
            StreamWriter sw=null;
            try
            {
                fs = new FileStream(@"c:\test.txt",FileMode.CreateNew, FileAccess.Write, FileShare.Read);              
                sw = new StreamWriter(fs, System.Text.Encoding.Default);
              
                sw.Write(sb.ToString());
                sw.Flush();
            }
            catch //(Exception em)
            {
                return false;
            }
            finally
            {
                if (sw != null)
                {
                    sw.Close();
                    sw.Dispose();
                }
                if (fs != null)
                {
                    fs.Close();
                    fs.Dispose();
                }
            }
            return true;
        }

 

读：

 

public static string FileRead(string path, out string err)
        {
            err = "";
            FileStream FileS = null;
            StreamReader FileR = null;
            Encoding fileEncoding = Encoding.Default;
            if (System.IO.File.Exists(path))
            {
                string StrData = "";
                try
                {
                    fileEncoding = TxtFileEncoding.GetEncoding(path, Encoding.GetEncoding("GB2312"));
                }
                catch (Exception et)
                {
                    Console.Write(et.Message);
                }
                try
                {
                    FileS = new FileStream(path,FileMode.Open, FileAccess.Read, FileShare.None);

                    FileR = new StreamReader(FileS, fileEncoding);
                    StrData = FileR.ReadToEnd();
                }
                catch (Exception em)
                {
                    err = em.Message;
                }
                finally
                {
                    FileR.Close();
                    FileS.Close();
                }
                return StrData;
            }
            else
            {
                return null;
            }
        }