寫入文字檔案

using System.IO;
private void WriteText(String filePath,String text)
{
 FileStream fs=null ;
 StreamWriter writer = null;
 try
 {
  if( File.Exists(filePath))
  {
       fs = new FileStream(filePath, FileMode.Append, FileAccess.Write);
  }
  else
  {
       fs = new FileStream(filePath, FileMode.Create, FileAccess.Write);
  }
  writer = new StreamWriter(fs);
  writer.WriteLine(text);
  writer.Flush();
  fs.Flush();
 }
 catch (Exception Ex)
 {
      Console.WriteLine(Ex.Message);
 }
 finally
 {
      if(fs!=null) fs.Close();
 }
}