简单的asp.net提交表单有关问题

简单的asp.net提交表单问题
<form   name= "frm1 "   action= "http://payment.chinapay.com:8081/pay/TransGet "   METHOD= "POST "   >  
<input   type=hidden   name= "MerId "   value= "808080010500435 "   >  
<input   type=hidden   name= "OrdId "   value= "0700004350100297 "   >  
<input   type=hidden   name= "TransAmt "   value= "000000217000 "   >  
<input   type=hidden   name= "CuryId "   value= "156 "   >  
<input   type=hidden   name= "TransDate "   value= "20070706 "   >  
<input   type=hidden   name= "TransType "   value= "0001 "   >  
<input   type=hidden   name= "Version "   value= "20040916 ">  
<input   type=hidden   name= "BgRetUrl "   value= "http://www.3c800.com/a9/accept.asp ">  
<input   type=hidden   name= "PageRetUrl "   value= "http://www.3c800.com/a9/chinapayback.asp ">  
<input   type=hidden   name= "GateId "   value= "1007 ">  
<input   type=hidden   name= "Priv1 "   value= "Memo ">  
<input   type=hidden   name= "ChkValue "   value=3ED1AF043A823F56119D785D3BAA337FF9E6759FB5FAD8C16BED358DED044B68BD4AE249443A33FD272898D58849A5D21B129163F28F0384DE12BFF9D64CB70B0516E7F1F9926A2F66FBF884851C4CAF0BD58443AFB3EB83F10D1DB035FC2003F7F3E90630B53AE0071C65CFEC1200A2888C82F536E9C34002CFC72352276B23   >  
</form>     上面代码在html可以提交成功，但在上面的参数是动态的，在asp.net页面我是这样写的      
protected   void   Button1_Click(object   sender,   EventArgs   e)
        {
                StringBuilder   strBuilder   =   new   StringBuilder();
                Response.Write( " <input   type=hidden   name=\ "MerId\ "   value=\ "808080010500435\ "   > ");
                Response.Write( " <input   type=hidden   name=\ "OrdId\ "   value=\ "0700004350100297\ "   > ");
                Response.Write( " <input   type=hidden   name=\ "TransAmt\ "   value=\ "000000217000\ "   > ");
                Response.Write( " <input   type=hidden   name=\ "CuryId\ "   value=\ "156\ "   > ");
                Response.Write( " <input   type=hidden   name=\ "TransDate\ "   value=\ "20070706\ "   > ");
                Response.Write( " <input   type=hidden   name=\ "TransType\ "   value=\ "0001\ "   > ");
                Response.Write( " <input   type=hidden   name=\ "Version\ "   value=\ "20040916\ "> ");
                Response.Write( " <input   type=hidden   name=\ "BgRetUrl\ "   value=\ "http://www.3c800.com/a9/accept.asp\ "> ");