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try
{
// ÒªÌá½»±íµ¥µÄURI×Ö·û´®¡£
string uriString = "http://localhost:1165/WebTest/MyLogin.aspx";
///////////////////////////////////////
// ´ò¿ªÒ³Ãæ
///////////////////////////////////////
WebClient webClient = new WebClient();
byte[] responseData = webClient.DownloadData(uriString);
string srcString = Encoding.UTF8.GetString(responseData);
///////////////////////////////////////
// ÌîÐ´Ò³Ãæ²¢Ìá½»
///////////////////////////////////////
webClient = new WebClient();
webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
// »ñÈ¡Ò³ÃæµÄ VeiwState
string viewStateFlag = "id=\"__VIEWSTATE\" value=\"";
int i = srcString.IndexOf(viewStateFlag) + viewStateFlag.Length;
int j = srcString.IndexOf("\"",i);
string viewState = srcString.Substring(i, j-i);
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var theForm = document.forms['form1'];
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theForm.__EVENTARGUMENT.value = "a trigger";//´«µÝµÄ²ÎÊý
theForm.submit();
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Response.Write(" <script>window.alert('¸Ã»áԱûÓÐÌá½»ÉêÇë,ÇëÖØÐÂÌá½»£¡')
</script>");
Response.Write(" <script>window.location
='http://www.51aspx.com/bizpulic/upmeb.aspx' </script>");
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