Получить данные с сайта - C#

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Формулировка задачи:

Не получается получить данные с сайта. В ответ на HttpWebRequest приходит 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html >
<head><title>vicess</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<META HTTP-EQUIV="Cache-Control" CONTENT="max-age=0">
<META HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
<META http-equiv="expires" content="0">
<META HTTP-EQUIV="Expires" CONTENT="Tue, 01 Jan 1980 1:00:00 GMT">
<META HTTP-EQUIV="Pragma" CONTENT="no-cache">

<link rel="STYLESHEET" type="text/css" href="style2.css">
<script language="JavaScript">

//Start phpRequest Object
var autho='';
var SERVER_URL = "server.php";
//Start phpRequest Object
 
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
 
function encode64(input) {
 
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;
input=input.toString();
input = utf8_encode(input);
   do {
      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);
 
      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;
 
      if (isNaN(chr2)) {
         enc3 = enc4 = 64;
      } else if (isNaN(chr3)) {
         enc4 = 64;
      }
 
      output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + 
         keyStr.charAt(enc3) + keyStr.charAt(enc4);
   } while (i < input.length);
   
   return output;
}
 
function decode64(input) {
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;
 
if(input==''){return '';}
   // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
   input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
 
   do {
      enc1 = keyStr.indexOf(input.charAt(i++));
      enc2 = keyStr.indexOf(input.charAt(i++));
      enc3 = keyStr.indexOf(input.charAt(i++));
      enc4 = keyStr.indexOf(input.charAt(i++));
 
      chr1 = (enc1 << 2) | (enc2 >> 4);
      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
      chr3 = ((enc3 & 3) << 6) | enc4;
 
      output = output + String.fromCharCode(chr1);
 
      if (enc3 != 64) {
         output = output + String.fromCharCode(chr2);
      }
      if (enc4 != 64) {
         output = output + String.fromCharCode(chr3);
      }
   } while (i < input.length);
output = utf8_decode(output);
 
   return output;
}

 function utf8_encode (string) {
        string = string.replace(/\r\n/g,"\n");
        var utftext = "";
 
        for (var n = 0; n < string.length; n++) {
 
            var c = string.charCodeAt(n);
 
            if (c < 128) {
                utftext += String.fromCharCode(c);
            }
            else if((c > 127) && (c < 2048)) {
                utftext += String.fromCharCode((c >> 6) | 192);
                utftext += String.fromCharCode((c & 63) | 128);
            }
            else {
                utftext += String.fromCharCode((c >> 12) | 224);
                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
                utftext += String.fromCharCode((c & 63) | 128);
            }
 
        }
 
        return utftext;
    }
 
    // private method for UTF-8 decoding
    function utf8_decode (utftext) {
        var string = "";
        var i = 0;
        var c = c1 = c2 = 0;
 
        while ( i < utftext.length ) {
 
            c = utftext.charCodeAt(i);
 
            if (c < 128) {
                string += String.fromCharCode(c);
                i++;
            }
            else if((c > 191) && (c < 224)) {
                c2 = utftext.charCodeAt(i+1);
                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
                i += 2;
            }
            else {
                c2 = utftext.charCodeAt(i+1);
                c3 = utftext.charCodeAt(i+2);
                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
                i += 3;
            }
 
        }
 
        return string;
    }

function phpRequest() {
    this.parms = new Array();
    this.parmsIndex = 0;
    this.execute = phpRequestExecute;
    this.execute_post=phpRequestExecutePOST;
    this.add = phpRequestAdd;
    this.server = SERVER_URL;
}
 
function phpRequestAdd(name,value) {
    this.parms[this.parmsIndex] = new Pair(name,value);
    this.parmsIndex++;
}
 
function phpRequestExecute() {
    var targetURL = this.server;

    if(window.XMLHttpRequest) {
        try {
            httpRequest = new XMLHttpRequest();
        } catch(e) {
            httpRequest = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
        try {
            httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
        } catch(e) {
            try {
                httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
            } catch(e) {
                httpRequest = false;
            }
        }
    }
    
    try {

        var txt = '?1';
 
    //  var txt = "?1&autho="+autho;
        for(var ix in this.parms) {
    //  var tmp_param=this.parms[ix].value;
        
    //  if(this.parms[ix].value != ''){tmp_param = encode64(tmp_param);txt = txt+'&'+this.parms[ix].name+'='+tmp_param;}else{
    //      txt = txt+'&'+this.parms[ix].name+'='+tmp_param;}
        
        txt = txt+'&'+this.parms[ix].name+'='+this.parms[ix].value;
        }
        
        //Two options here, only uncomment one of these
        //GET REQUEST
        httpRequest.open("GET", targetURL+txt, false, null, null);  
 
        //POST REQUEST EXAMPLE
        /*
        //httpRequest.open("POST", targetURL+txt, false, null, null);   
        //httpRequest.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
        */
        httpRequest.send('');
    }catch (e){
        alert('An error has occured calling the external site: '+e+targetURL+txt);
        return false;
    } 
 
    switch(httpRequest.readyState) {
        case 1,2,3:
            alert('Bad Ready State: '+httpRequest.status);
            return false;
        break;
        case 4:
            if(httpRequest.status !=200) {
                alert('The server respond with a bad status code: '+httpRequest.status);
                return false;
            } else {
                var response = httpRequest.responseText;
            }
        break;
    }
    
    return response;
}

function phpRequestExecutePOST() {
    var targetURL = this.server;

    if(window.XMLHttpRequest) {
        try {
            httpRequest = new XMLHttpRequest();
        } catch(e) {
            httpRequest = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
        try {
            httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
        } catch(e) {
            try {
                httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
            } catch(e) {
                httpRequest = false;
            }
        }
    }
    
    try {
        var txt = "autho="+autho+"&uid="+encode64(uid);
 
    //  var txt = "?1&autho="+autho;
        for(var ix in this.parms) {
    //  var tmp_param=this.parms[ix].value;
        
    //  if(this.parms[ix].value != ''){tmp_param = encode64(tmp_param);txt = txt+'&'+this.parms[ix].name+'='+tmp_param;}else{
    //      txt = txt+'&'+this.parms[ix].name+'='+tmp_param;}
        
        txt = txt+'&'+this.parms[ix].name+'='+this.parms[ix].value;
        }
        
        //Two options here, only uncomment one of these
        //GET REQUEST
        //httpRequest.open("GET", targetURL, true, null, null); 
 
        //POST REQUEST EXAMPLE
        
        httpRequest.open("POST", targetURL,false);  
        httpRequest.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
        httpRequest.setRequestHeader("Content-length", txt.length);
        httpRequest.setRequestHeader("Connection", "close");

        httpRequest.send(txt);
    }catch (e){
        alert('An error has occured calling the external site: '+e+targetURL+txt);
        return false;
    } 
 
    switch(httpRequest.readyState) {
        case 1,2,3:
            alert('Bad Ready State: '+httpRequest.status);
            return false;
        break;
        case 4:
            if(httpRequest.status !=200) {
                alert('The server respond with a bad status code: '+httpRequest.status);
                return false;
            } else {
                var response = httpRequest.responseText;
            }
        break;
    }
    
    return response;
}

function Pair(name,value) {
if(value != ''){this.value = encode64(value);}else{
            this.value = value;}
 
    this.name = name;
    //this.value = value;
}
function checkEan(eanCode) {
        // Check if only digits
        var ValidChars = "0123456789";
        for (i = 0; i < eanCode.length; i++) {
            digit = eanCode.charAt(i);
            if (ValidChars.indexOf(digit) == -1) {
                return false;
            }
        }
     
        // Add five 0 if the code has only 8 digits
        if (eanCode.length == 8 ) {
            eanCode = "00000" + eanCode;
        }
        // Check for 13 digits otherwise
        else if (eanCode.length != 13) {
            return false;
        }
     
        // Get the check number
        originalCheck = eanCode.substring(eanCode.length - 1);
        eanCode = eanCode.substring(0, eanCode.length - 1);
     
        // Add even numbers together
        even = Number(eanCode.charAt(1)) +
               Number(eanCode.charAt(3)) +
               Number(eanCode.charAt(5)) +
               Number(eanCode.charAt(7)) +
               Number(eanCode.charAt(9)) +
               Number(eanCode.charAt(11));
        // Multiply this result by 3
        even *= 3;
     
        // Add odd numbers together
        odd = Number(eanCode.charAt(0)) +
              Number(eanCode.charAt(2)) +
              Number(eanCode.charAt(4)) +
              Number(eanCode.charAt(6)) +
              Number(eanCode.charAt(8)) +
              Number(eanCode.charAt(10));
     
        // Add two totals together
        total = even + odd;
     
        // Calculate the checksum
        // Divide total by 10 and store the remainder
        checksum = total % 10;
        // If result is not 0 then take away 10
        if (checksum != 0) {
            checksum = 10 - checksum;
        }
     
        // Return the result
        if (checksum != originalCheck) {
            return false;
        }
     
        return true;
    }

function trim(s)
{
    var l=0; var r=s.length -1;
    while(l < s.length && s[l] == ' ')
        {   l++; }
        while(r > l && s[r] == ' ')
            {   r-=1;   }
            return s.substring(l, r+1);
            }

sekout=0;
 
function timeout()
{
 
setTimeout("timeout_();",2000);

}

function timeout_(){

load();
setTimeout("timeout_();",2000000);
 
}
 
function load()
{
praca="204";
 
tmp_html='<table>';
tmp_html2='<table>';
tmp_html3='<table>';
tmp_html4='<table>';
 
req = new phpRequest();
    req.add('praca',praca);
    
        var response = req.execute();

    response=response.split('#');
    i=0;
    j=0;
    while(response[i]!=''){
    res=response[i].split('&');
    
    for(var tid=0; tid<res.length; tid++){if(res[tid] != ''){res[tid]=decode64(res[tid]);}}
res[0]++;
if(res[0]>10 && res[0]<20){
    tmp_html+='<tr><td>'+res[1]+'</td><td>'+res[2]+'</td></tr>';
}
if(res[0]>20 && res[0]<30){
    tmp_html2+='<tr><td>'+res[1]+'</td><td>'+res[2]+'</td></tr>';
}
if(res[0]>30 && res[0]<40){
    tmp_html3+='<tr><td>'+res[1]+'</td><td>'+res[2]+'</td></tr>';
}
if(res[0]>40 && res[0]<50){
    tmp_html4+='<tr><td>'+res[1]+'</td><td>'+res[2]+'</td></tr>';
}
 
    j++;
    i++;
    }

document.getElementById('messageTree').innerHTML=tmp_html+'</table>';
document.getElementById('messageTree2').innerHTML=tmp_html2+'</table>';
document.getElementById('messageTree3').innerHTML=tmp_html3+'</table>';
document.getElementById('messageTree4').innerHTML=tmp_html4+'</table>';

}

</script>
</head>
<body style="width: 1024px; background:black;-moz-transform:scale(0.65);-moz-transform-origin:0 0;" scroll="no" onload="timeout();" class="messageTreeBody"  align="center" >

<table width="100%" ><tr><td>
<table ><td valign=top style="color:white;font-size:15px" id="messageTree">
         </td>
<td valign=top style="color:white;font-size:15px" id="messageTree2">
         </td>
<td valign=top style="color:white;font-size:15px" id="messageTree3">
         </td>
<td valign=top style="color:white;font-size:15px" id="messageTree4">
         </td>
<td valign=top style="color:white;font-size:15px" id="messageTree5">
         </td></tr>
</table>
 
</body></html>
Но нужных данных в таблице нет.

Решение задачи: «Получить данные с сайта»

textual
Листинг программы 
WebBrowser webBrowser1 = new WebBrowser();
webBrowser1.Navigate("URL");
webBrowser1.ScriptErrorsSuppressed = true;
while (webBrowser1.ReadyState != WebBrowserReadyState.Complete)
{
    Application.DoEvents();
}
string to_write = webBrowser1.DocumentText;
FileStream afile = new FileStream("file_path", FileMode.OpenOrCreate);
StreamWriter sw = new StreamWriter(afile);
sw.Write(to_write);
sw.Close();

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