using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Net;
using System.IO;
using System.Threading;
namespace MyGetCar
{
///
/// Form1 的摘要說明。
///
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox srcAddress;
private System.Windows.Forms.TextBox tarAddress;
private System.Windows.Forms.StatusBar statusBar;
private System.Windows.Forms.Button Start;
private WebClient client = new WebClIEnt();
///
/// 必需的設計器變量。
///
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Windows 窗體設計器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 調用後添加任何構造函數代碼
//
}
///
/// 清理所有正在使用的資源。
///
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
///
/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
/// 此方法的內容。
///
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.srcAddress = new System.Windows.Forms.TextBox();
this.tarAddress = new System.Windows.Forms.TextBox();
this.statusBar = new System.Windows.Forms.StatusBar();
this.Start = new System.Windows.Forms.Button();
this.button1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// label1
//
this.label1.Location = new System.Drawing.Point(8, 32);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(72, 23);
this.label1.TabIndex = 0;
this.label1.Text = "文件地址：";
this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
//
// label2
//
this.label2.Location = new System.Drawing.Point(8, 72);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(72, 23);
this.label2.TabIndex = 1;
this.label2.Text = "另存到：";
this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
//
// srcAddress
//
this.srcAddress.Location = new System.Drawing.Point(80, 32);
this.srcAddress.Name = "srcAddress";
this.srcAddress.Size = new System.Drawing.Size(216, 21);
this.srcAddress.TabIndex = 2;
this.srcAddress.Text = "";
//
// tarAddress
//
this.tarAddress.Location = new System.Drawing.Point(80, 72);
this.tarAddress.Name = "tarAddress";
this.tarAddress.Size = new System.Drawing.Size(216, 21);
this.tarAddress.TabIndex = 3;
this.tarAddress.Text = "";
//
// statusBar
//
this.statusBar.Location = new System.Drawing.Point(0, 151);
this.statusBar.Name = "statusBar";
this.statusBar.Size = new System.Drawing.Size(312, 22);
this.statusBar.TabIndex = 4;
//
// Start
//
this.Start.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
this.Start.Location = new System.Drawing.Point(216, 112);
this.Start.Name = "Start";
this.Start.Size = new System.Drawing.Size(75, 24);
this.Start.TabIndex = 5;
this.Start.Text = "開始下載";
this.Start.Click += new System.EventHandler(this.Start_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClIEntSize = new System.Drawing.Size(312, 173);
this.Controls.Add(this.button1);
this.Controls.Add(this.Start);
this.Controls.Add(this.statusBar);
this.Controls.Add(this.tarAddress);
this.Controls.Add(this.srcAddress);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.MaximizeBox = false;
this.Name = "Form1";
this.Text = "文件下載器";
this.ResumeLayout(false);
}
#endregion
///
/// 應用程序的主入口點。
///
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private void StartDownload()
{
Start.Enabled = false;
string URL = srcAddress.Text;
int n = URL.LastIndexOf("?");
string URLAddress = URL;
//string URLAddress = URL.Substring(0,n);
string fileName = URL.Substring(n+1,URL.Length-n-1);
string Dir = tarAddress.Text;
string Path = Dir+fileName;
try
{
WebRequest myre=WebRequest.Create(URLAddress);
}
catch(WebException exp)
{
MessageBox.Show(exp.Message,"Error");
}
try
{
statusBar.Text = "開始下載文件...";
clIEnt.DownloadFile(URLAddress,fileName);
Stream str = clIEnt.OpenRead(URLAddress);
//StreamReader reader = new StreamReader(str); ,這句沒有什麼必要！個人認為
byte[] mbyte = new byte[100000];
int allmybyte = (int)mbyte.Length;
int startmbyte = 0;
statusBar.Text = "正在接收數據...";
//寫入到BYTE數組中，起緩沖作用
while(allmybyte>0)
{
int m = str.Read(mbyte,startmbyte,allmybyte);
if(m==0)
break;
startmbyte+=m;
allmybyte-=m;
}
FileStream fstr = new FileStream(Path,FileMode.OpenOrCreate,FileAccess.Write);
fstr.Write(mbyte,0,startmbyte);
str.Close();
fstr.Close();
statusBar.Text = "下載完畢！";
}
catch(WebException exp)
{
MessageBox.Show(exp.Message,"Error");
statusBar.Text = "";
}
Start.Enabled = true;
}
private void Start_Click(object sender, System.EventArgs e)
{
Thread th = new Thread(new ThreadStart(StartDownload));
th.Start();
}
}
}
