Upload file với C# dùng Http Request

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;
using xNet;

namespace HttpRequest_Bai1_GetDataFrom_HowKteam
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        #region Kteam code
        void AddCookie(HttpRequest http, string cookie)
        {
            var temp = cookie.Split(';');
            foreach (var item in temp)
            {
                var temp2 = item.Split('=');
                if (temp2.Count() > 1)
                {
                    http.Cookies.Add(temp2[0], temp2[1]);
                }
            }
        }

        string GetData(string url, HttpRequest http = null, string userArgent = "", string cookie = null)
        {
            if (http == null)
            {
                http = new HttpRequest();
                http.Cookies = new CookieDictionary();
            }

            if (!string.IsNullOrEmpty(cookie))
            {
                AddCookie(http, cookie);
            }

            if (!string.IsNullOrEmpty(userArgent))
            {
                http.UserAgent = userArgent;
            }
            string html = http.Get(url).ToString();
            return html;
        }

        string GetLoginDataToken(string html)
        {
            string token = "";

            var res = Regex.Matches(html, @"(?<=__RequestVerificationToken"" type=""hidden"" value="").*?(?="")", RegexOptions.Singleline);

            if (res != null && res.Count > 0)
            {
                token = res[1].ToString();
            }

            return token;
        }

        string PostData(HttpRequest http, string url, string data = null, string contentType = null, string userArgent = "", string cookie = null)
        {
            if (http == null)
            {
                http = new HttpRequest();
                http.Cookies = new CookieDictionary();
            }

            if (!string.IsNullOrEmpty(cookie))
            {
                AddCookie(http, cookie);
            }

            if (!string.IsNullOrEmpty(userArgent))
            {
                http.UserAgent = userArgent;
            }

            string html = http.Post(url, data, contentType).ToString();
            return html;
        }

        string UploadData(HttpRequest http, string url, MultipartContent data = null, string contentType = null, string userArgent = "", string cookie = null)
        {
            if (http == null)
            {
                http = new HttpRequest();
                http.Cookies = new CookieDictionary();
            }

            if (!string.IsNullOrEmpty(cookie))
            {
                AddCookie(http, cookie);
            }

            if (!string.IsNullOrEmpty(userArgent))
            {
                http.UserAgent = userArgent;
            }

            string html = http.Post(url, data).ToString();
            return html;
        }

        /// <summary>
        /// https://uploadfiles.io
        /// https://up.uploadfiles.io/upload
        /// {"status":true,"id":2830220,"url":"https:\/\/ufile.io\/bzu2r","destination":"https:\/\/uploadfiles.io\/bzu2r","name":"baner.png","filename":"bzu2r-baner.png","slug":"bzu2r","size":"131.2 KB","type":"image","expiry":"4 Weeks","session_id":"0a474824369a95008b21c963ef90f62a3d9aee8c","timing":"1538645128-1538645128"}
        /// </summary>
        /// <param name="path"></param>
        void UploadFile(string path)
        {
            MultipartContent data = new MultipartContent() {
                { new StringContent("dzuuid"), "cf45eb6a-834d-44f0-af1e-c6056ae1cc47"},
                { new StringContent("dzchunkindex"), "0"},
                { new StringContent("dztotalfilesize"), "134355"},
                { new StringContent("dzchunksize"), "26143000"},
                { new StringContent("dztotalchunkcount"), "1"},
                { new StringContent("dzchunkbyteoffset"), "0"},
                { new FileContent(path), "file", Path.GetFileName(path)}
            };

            var html = UploadData(null, "https://up.uploadfiles.io/upload", data);

            var dataRes = JsonConvert.DeserializeObject<UploadFileModel>(html);

            Process.Start(dataRes.destination);
        }
        #endregion

        void UploadFile()
        {
            OpenFileDialog dialog = new OpenFileDialog();
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                UploadFile(dialog.FileName);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //Crawl
            /*
             HttpClient
             HttpWebClient
             WebClient
             HttpWebRequest
             HttpRequest
             */

            var html = GetData("https://www.howkteam.com/");
            TestData(html);
        }

        void TestData(string html)
        {
            File.WriteAllText("res.html", html);
            Process.Start("res.html");
        }


        private void button2_Click(object sender, EventArgs e)
        {
            string cookie = "";
            var html = GetData("https://www.howkteam.com/", null, null, cookie);
            TestData(html);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            HttpRequest http = new HttpRequest();
            http.Cookies = new CookieDictionary();
            string userArgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36";

            var html = GetData("https://www.howkteam.vn", http, userArgent);


            string token = GetLoginDataToken(html);

            string userName = "kteamts@gmail.com";
            string password = "Test123@";
            string data = "__RequestVerificationToken=" + token + "&Email=" + WebUtility.UrlEncode(userName) + "&Password=" + WebUtility.UrlEncode(password) + "&RememberMe=true&RememberMe=false";
            html = PostData(http, "https://www.howkteam.vn/account/login?returnUrl=https%3A%2F%2Fwww.howkteam.vn%2F", data, "application/x-www-form-urlencoded; charset=UTF-8").ToString();

            html = GetData("https://www.howkteam.vn", http, userArgent);

            File.WriteAllText("res.html", html);
            Process.Start("res.html");
        }

        private void button4_Click(object sender, EventArgs e)
        {
            UploadFile();
        }
    }
    
    public class UploadFileModel
    {
        public bool status { get; set; }
        public int id { get; set; }
        public string url { get; set; }
        public string destination { get; set; }
        public string name { get; set; }
        public string filename { get; set; }
        public string slug { get; set; }
        public string size { get; set; }
        public string type { get; set; }
        public string expiry { get; set; }
        public string session_id { get; set; }
        public string timing { get; set; }
    }
}
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namespace HttpRequest_Bai1_GetDataFrom_HowKteam
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.button3 = new System.Windows.Forms.Button();
            this.button4 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(12, 12);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 0;
            this.button1.Text = "Get data";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(93, 12);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(122, 23);
            this.button2.TabIndex = 1;
            this.button2.Text = "Get data with cookie";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // button3
            // 
            this.button3.Location = new System.Drawing.Point(221, 12);
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(114, 23);
            this.button3.TabIndex = 2;
            this.button3.Text = "Post đăng nhập";
            this.button3.UseVisualStyleBackColor = true;
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // button4
            // 
            this.button4.Location = new System.Drawing.Point(341, 12);
            this.button4.Name = "button4";
            this.button4.Size = new System.Drawing.Size(75, 23);
            this.button4.TabIndex = 3;
            this.button4.Text = "Upload file";
            this.button4.UseVisualStyleBackColor = true;
            this.button4.Click += new System.EventHandler(this.button4_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(432, 191);
            this.Controls.Add(this.button4);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Button button3;
        private System.Windows.Forms.Button button4;
    }
}

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