first neet add an user control "DownloadBar":
/*
- Created by SharpDevelop.
- User: gwang
- Date: 2016/8/25
- Time: 14:01
- To change this template use Tools | Options | Coding | Edit Standard Headers.
*/
using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
namespace testHttp
{
///
/// Description of DownloadBar.
///
public partial class DownloadBar : UserControl
{
public DownloadBar()
{
//
// The InitializeComponent() call is required for Windows Forms designer support.
//
InitializeComponent();
Anchor=AnchorStyles.Left|AnchorStyles.Right;
//Width=Parent.Width -40;
Height=65;
//
// TODO: Add constructor code after the InitializeComponent() call.
//
}public DownloadBar(DownLoadInfo info)
{
//
// The InitializeComponent() call is required for Windows Forms designer support.
//
InitializeComponent();
MinimumSize= new Size(126,66);
this.info=info;
btn1.Text=""+info.title +info.uid;
btn1.Visible=false;
lb1.Visible=true ;if (info.ProgressPercentage<100){lb1.Visible=true;
lb1.Text=info.ProgressPercentage+"%";}t = new Timer();
t.Tick+=t_tick;
t.Start ();
}protected override void OnLoad(EventArgs e)
{base.OnLoad(e);
//Anchor=AnchorStyles.Left|AnchorStyles.Right;
// this.Size = new System.Drawing.Size(274, 65);
this.Size = new System.Drawing.Size(Parent.Width-20, 65);
this.ResumeLayout(false);}Timer t;
DownLoadInfo info;void t_tick(object sender, EventArgs e){if(info.ProgressPercentage>=100 || info.isCompleted )
{
//lb1.Visible=false;
t.Stop();
btn1.Visible=true ;
lb1.Visible=false;
}lb1.Text=info.ProgressPercentage+"%";
lb1.Width=(int )( Width* ((double )info.ProgressPercentage * 0.01d));}
void Btn1Click(object sender, EventArgs e)
{
MessageBox.Show(info.title );
}}
}
———partial class for ui InitializeComponent————————
/*
-
Created by SharpDevelop.
-
User: gwang
-
Date: 2016/8/25
-
Time: 14:01
-
To change this template use Tools | Options | Coding | Edit Standard Headers.
*/
namespace testHttp
{
partial class DownloadBar
{
///
/// Designer variable used to keep track of non-visual components.
///
private System.ComponentModel.IContainer components = null;
private System.Windows.Forms.Label lb1;
private System.Windows.Forms.Button btn1;
/// <summary>
/// Disposes resources used by the control.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing) {
if (components != null) {
components.Dispose();
}
}
base.Dispose(disposing);
} /// <summary>
/// This method is required for Windows Forms designer support.
/// Do not change the method contents inside the source code editor. The Forms designer might
/// not be able to load this method if it was changed manually.
/// </summary>
private void InitializeComponent()
{
this.lb1 = new System.Windows.Forms.Label();
this.btn1 = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// lb1
//
this.lb1.BackColor = System.Drawing.Color.DodgerBlue;
this.lb1.Dock = System.Windows.Forms.DockStyle.Left;
this.lb1.Location = new System.Drawing.Point(0, 0);
this.lb1.Name = "lb1";
this.lb1.Size = new System.Drawing.Size(55, 65);
this.lb1.TabIndex = 0;
this.lb1.Text = "10%";
this.lb1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
//
// btn1
//
this.btn1.Dock = System.Windows.Forms.DockStyle.Fill;
this.btn1.Location = new System.Drawing.Point(0, 0);
this.btn1.Name = "btn1";
this.btn1.Size = new System.Drawing.Size(274, 65);
this.btn1.TabIndex = 1;
this.btn1.UseVisualStyleBackColor = true;
this.btn1.Click += new System.EventHandler(this.Btn1Click);
//
// DownloadBar
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.BackColor = System.Drawing.Color.LightSteelBlue;
this.Controls.Add(this.lb1);
this.Controls.Add(this.btn1);
this.Name = "DownloadBar";
this.Size = new System.Drawing.Size(274, 65);
this.ResumeLayout(false); }}
}
2 main ui form code behind "FrmDownload":
/*
- Created by SharpDevelop.
- User: gwang
- Date: 2016/8/25
- Time: 14:34
- To change this template use Tools | Options | Coding | Edit Standard Headers.
*/
using System;
using System.Drawing;
using System.Windows.Forms;
namespace testHttp
{
///
/// Description of FrmDownload.
///
public partial class FrmDownload : Form
{
public FrmDownload()
{
//
// The InitializeComponent() call is required for Windows Forms designer support.
//
InitializeComponent();
//
// TODO: Add constructor code after the InitializeComponent() call.
//
}int uid=1;void Button1Click(object sender, EventArgs e)
{
DownLoadInfo info = new DownLoadInfo();
info.url="http://sw.bos.baidu.com/sw-search-sp/av_aladdin/a997f8c5c22/rj_hb1174.exe";
info.title="test it "+ uid ;
info.uid=""+uid ;
HttpUtils.downloadFile(info);
uid++;this.flowLayoutPanel1.Controls.Add(new DownloadBar(info));
Text="there "+ this.flowLayoutPanel1.Controls.Count +" downloading.........";
}}
}
oh… first need define util class "HttpUtils"
/*
-
Created by SharpDevelop.
-
User: gwang
-
Date: 2016/8/24
-
Time: 17:23
-
To change this template use Tools | Options | Coding | Edit Standard Headers.
*/
using System;
using System.Net;
using System.ComponentModel;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
namespace testHttp
{
///
/// Description of HttpUtils.
///
public class HttpUtils
{
public HttpUtils()
{
} public static List<DownLoadInfo> listDownloadInfo= new List<DownLoadInfo>(); public static void downloadFile(DownLoadInfo info){ if(listDownloadInfo.Count (n=> n.uid==info.uid )>0)
{ return;
} listDownloadInfo.Add(info);
WebClient wc=new WebClient();
wc.DownloadProgressChanged+= wc_DownloadProgressChanged;
wc.DownloadDataCompleted+=wc_DownloadDataCompleted; //wc.DownloadStringAsync(new Uri("https://jirafnd.dev.activenetwork.com/browse/HYTEK-274",UriKind.Absolute ),info);
wc.DownloadDataAsync(new Uri(info.url ,UriKind.Absolute ),info); } private static void wc_DownloadProgressChanged(object sender, DownloadProgressChangedEventArgs e){ (e.UserState as DownLoadInfo ).ProgressPercentage= e.ProgressPercentage; } private static void wc_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e){ (e.UserState as DownLoadInfo ).isCompleted =( e.Error==null) ; }}
// this for basic info class
public class DownLoadInfo{
public string title{get;set;}
public string url{get;set;}
public string uid{get;set;}
public int ProgressPercentage{ get;set;}
public bool isCompleted{get;set;}}
}
