总算知道在.net里面怎么post提交了...记录下先

  Response.Write(@"   

  <form   id=""formbill""   action=""chinabank/Send.aspx""   method=""post"">   

 

  <input name=""v_amount"" type=""text"" value="""+Pay_sum+@"""  >

  </form>   

  <script   language=""javascript"">   

  document.getElementById('formbill').submit();   

 

  </script>   

  ");