在.NET 中模拟提交Post数据

using System;
using System.Net;
using System.IO;
using System.Text;
using System.Web;

class ClientPOST {
    public static void Main(string[] args) {

        if (args.Length < 1) {
            showusage();
        } else {
            if (args.Length < 2 ) {
                getPage(args[0], "s1=foods2=bart(&S)");
            } else {
                getPage(args[0], args[1]);
            }
        }

        Console.WriteLine();
        Console.WriteLine("按任意键继续...");
        Console.ReadLine();

        return;
    }

    public static void showusage() {
        Console.WriteLine("尝试发送 (POST) 到 URL 中");
        Console.WriteLine();
        Console.WriteLine("用法：:");
        Console.WriteLine("ClientPOST URL [postdata]");
        Console.WriteLine();
        Console.WriteLine("示例：:");
        Console.WriteLine("ClientPOST http://www.microsoft.com s1=food&s2=bart");
    }

    public static void getPage(String url, String payload) {
        WebResponse result = null;

        try {

            WebRequest req = WebRequest.Create(url);
            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
        StringBuilder UrlEncoded = new StringBuilder();
        Char[] reserved = {'?', '=', '&'};
        byte[] SomeBytes = null;

        if (payload != null) {
        int i=0, j;
        while(i

 1<payload.length){ (count="" (j="-1){" );="" 0,="" 256="" break;="" char[256];="" char[]="" console.writeline("\r\n已接收到响应流");="" console.writeline("html...\r\n");="" count="sr.Read(" else="" encode="" encoding="" i="j+1;" i);="" if="" int="" j="payload.IndexOfAny(reserved," j-i)));="" newstream="req.GetRequestStream();" newstream.close();="" newstream.write(somebytes,="" payload.length-i)));="" read="new" read,="" receivestream="result.GetResponseStream();" receivestream,="" req.contentlength="0;" result="req.GetResponse();" somebytes="Encoding.UTF8.GetBytes(UrlEncoded.ToString());" somebytes.length);="" sr="new" stream="" streamreader="" streamreader(="" urlencoded.append(httputility.urlencode(payload.substring(i,="" urlencoded.append(payload.substring(j,1));="" while="" {="" }=""> 0) {
 2                    String str = new String(read, 0, count);
 3                    Console.Write(str);
 4                    count = sr.Read(read, 0, 256);
 5                }
 6                Console.WriteLine("");
 7            } catch(Exception e) {
 8                Console.WriteLine( e.ToString());
 9                Console.WriteLine("\r\n找不到请求 URI，或者它的格式不正确");
10            } finally {
11                if ( result != null ) {
12                    result.Close();
13                }
14            }
15        }
16    }</payload.length){>