C# 多线程下载文件(http,亲测通过)

【实例简介】多线程下载, 下载的测试网址可以输入这个 http://www.youpaopao.com/apkdown/youpaopao.apk

下载后可以在 默认D盘中找到下载的文件

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace DownLoadHttp3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            Control.CheckForIllegalCrossThreadCalls = false;
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.txtSrcAddress.Text = @"http://www.100-try.com/soft/v.rar";
            this.txtTarAddress.Text = @"D:";
        }

        private void btnDown_Click(object sender, EventArgs e)
        {
            //加到一个线程里面是为了防止假死
            Thread th = new Thread(new ThreadStart(this.DownLoad));
            th.Start();


        }

        private void DownLoad()
        {
            this.numUpDown.Enabled = false;
            this.btnDown.Enabled = false;
            //url
            string url = this.txtSrcAddress.Text.Trim();
            //保存的路径
            string dir = this.txtTarAddress.Text.Trim();

            //线程数

            int threadNums = (int)this.numUpDown.Value;

            ThreadDownload down = new ThreadDownload(threadNums, url, dir);
            down.StartDownLoad();

            //进度条
            this.statusBar_process.Maximum = (int)down.FileSize;

            while (!down.IsComplete)
            {
                this.statusBar_process.Value = down.DownFileSize;
            }
            if (down.IsComplete)
            {
                this.numUpDown.Enabled = true;
                this.btnDown.Enabled = true;
            }

        }
    }
}