谁有现成的进度条ProgressBar的例子,或者是哪里有下载的...........
谁有进度条的例子哟!
就像windows系统复制稍微大点文件时出现的那个进度提示窗体一样.....最好是能弹出一个窗体来的
有的就发出来吧 或者发到我的邮箱:bwang3630478@126.com
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你说的是哪个啊
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Ajax的，直接上http://ajaxcontroltoolkit.com
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Winform
在工具箱里有ProgressBar
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Cursor = Cursors.WaitCursor; //进度条FROM waiting wt = new waiting(); new Thread(new ThreadStart(delegate { if (!wt.IsDisposed && !wt.Disposing) wt.ShowDialog(); })).Start(); /// ///数据查询过程 /// if (wt.InvokeRequired) { wt.Invoke(new MethodInvoker(delegate { wt.Dispose(); })); } else { wt.Dispose(); wt.Close(); } Cursor = Cursors.Arrow;
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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 WindowsApplication2{ public delegate void CloseFunction(); public partial class Form1 : Form { public Form1() { InitializeComponent(); this.progressBar1.Maximum = 100; this.thisTimer = new System.Windows.Forms.Timer(); this.thisTimer.Interval = 1000; this.thisTimer.Tick += new EventHandler(thisTimer_Tick); this.thisTimer.Start(); Thread thd = new Thread(new ParameterizedThreadStart(GetData )); thd.Start(); } void thisTimer_Tick(object sender, EventArgs e) { progressBar1.PerformStep(); } private void GetData( object o ) { Thread.Sleep(100); thisTimer.Stop(); this.Invoke( new CloseFunction( this.Close ) ); } private System.Windows.Forms.Timer thisTimer; }} using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace WindowsApplication2{ public partial class MainFrame : Form { public MainFrame() { Form1 form1 = new Form1(); form1.ShowDialog(); InitializeComponent(); } private void MainFrame_Load(object sender, EventArgs e) { string mPath=Application.StartupPath; axWindowsMediaPlayer1.URL = mPath + "\\Voice\\1.mp3"; axWindowsMediaPlayer1.Ctlcontrols.play(); } }}
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lz是想调用系统默认复制文件的那个对话框吧，2个文件夹之间一张纸飞来飞去的那个。。。。
C#调用系统的复制、移动、删除文件对话框
http://blog.csdn.net/herojams/archive/2009/01/05/3715247.aspx
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对于一个进度条，无碍乎是最小最大值，以及当前值等一些重要的属性，至于方法，用得较多的是PerformStep()和PerformClick()之类的。代码如下： private void btnRun_Click(object sender, EventArgs e) { btnRun.Enabled = false; if (txtBoxTarget.Text.Equals(String.Empty) || txtBoxTimes.Text.Equals(String.Empty)) { MessageBox.Show("请输入连接的URL和连接次数！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } int length = Int32.Parse(txtBoxTimes.Text.Trim()); string url = txtBoxTarget.Text.Trim(); double process = 0; int show = 0; DateTime rightNow = DateTime.Now; DateTime end; TimeSpan interval; toolStripStatusLabel.Text = "连接中"; progressBar.Visible = true; progressBar.Minimum = 0; progressBar.Maximum = length; for (int i = 1; i <= length; i++) { try { // 这两句是连接某个网页的。 WebRequest myRequest = WebRequest.Create(url); WebResponse myResponse = myRequest.GetResponse(); myResponse.Close(); } catch { txtBoxReport.Text = "网络连接有误！"; return; } progressBar.PerformStep(); process = i / length; show = (int)process * 100; } progressBar.Visible = false; toolStripStatusLabel.Text = "已就绪"; txtBoxReport.Text = "连接 " + url + " " + length + "次。"; end = DateTime.Now; interval = end - rightNow; txtBoxReport.Text += "\r\n共耗时" + interval.TotalMilliseconds + "毫秒。"; btnRun.Enabled = true; }
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public void createNewRecords(){ // Sets the progress bar's Maximum property to // the total number of records to be created. progressBar1.Maximum = 20; // Creates a new record in the dataset. // NOTE: The code below will not compile, it merely // illustrates how the progress bar would be used. CustomerRow anyRow = DatasetName.ExistingTable.NewRow(); anyRow.FirstName = "Stephen"; anyRow.LastName = "James"; ExistingTable.Rows.Add(anyRow); // Increases the value displayed by the progress bar. progressBar1.Value += 1; // Updates the label to show that a record was read. label1.Text = "Records Read = " + progressBar1.Value.ToString();}如果要显示按固定时间间隔增长的进度，则可以设置该值，然后调用方法，使 ProgressBar 控件的值按该时间间隔递增。对于计时器以及其他一些您无法以整体的百分比测量进度的方案，这是非常有用的。 使进度栏按固定值递增设置 ProgressBar 控件的 Minimum 和 Maximum 值。将控件的 Step 属性设置为一个整数，该整数代表进度栏的显示值递增的数量。 调用 PerformStep 方法，使显示值按 Step 属性中设置的数量进行更改。 下面的代码示例说明进度栏如何维护复制操作中的文件计数。 在下面的示例中，当每个文件读入内存时，进度栏和标签都会相应地更新，以反映读取的文件总数。该示例要求窗体有一个 Label 控件和一个 ProgressBar 控件。public void loadFiles(){ // Sets the progress bar's minimum value to a number representing // no operations complete -- in this case, no files read. progressBar1.Minimum = 0; // Sets the progress bar's maximum value to a number representing // all operations complete -- in this case, all five files read. progressBar1.Maximum = 5; // Sets the Step property to amount to increase with each iteration. // In this case, it will increase by one with every file read. progressBar1.Step = 1; // Uses a for loop to iterate through the operations to be // completed. In this case, five files are to be copied into memory, // so the loop will execute 5 times. for (int i = 0; i <= 4; i++) { // Inserts code to copy a file progressBar1.PerformStep(); // Updates the label to show that a file was read. label1.Text = "# of Files Read = " + progressBar1.Value.ToString(); }}最后，可以使进度栏的显示值每次递增的数量都是唯一的。这在您记录一系列唯一的操作时非常有用，例如将不同大小的文件写入硬盘，或者按整体的百分比测量进度。 使进度栏按动态值递增设置 ProgressBar 控件的 Minimum 和 Maximum 值。调用 Increment 方法，使显示值按指定的整数进行更改。 下面的代码示例说明在复制操作期间，进度栏如何计算已使用的磁盘空间量。 在下面的示例中，当每个文件写入硬盘时，进度栏和标签都会相应地更新，以反映可用的硬盘空间量。该示例要求窗体有一个 Label 控件和一个 ProgressBar 控件。 public void readFiles(){ // Sets the progress bar's minimum value to a number // representing the hard disk space before the files are read in. // You will most likely have to set this using a system call. // NOTE: The code below is meant to be an example and // will not compile. progressBar1.Minimum = AvailableDiskSpace(); // Sets the progress bar's maximum value to a number // representing the total hard disk space. // You will most likely have to set this using a system call. // NOTE: The code below is meant to be an example // and will not compile. progressBar1.Maximum = TotalDiskSpace(); // Uses a for loop to iterate through the operations to be // completed. In this case, five files are to be written // to the disk, so it will execute the loop 5 times. for (int i = 1; i<= 5; i++) { // Insert code to read a file into memory and update file size. // Increases the progress bar's value based on the size of // the file currently being written. progressBar1.Increment(FileSize); // Updates the label to show available drive space. label1.Text = "Current Disk Space Used = " + progressBar1.Value.ToString(); }}
[解决办法]
//例： 计算Fibonacci数列，并实时滚动进度条
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.ComponentModel;
class FibonacciNumber : Form
{
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.Run(new FibonacciNumber());
}
private StatusStrip progressStatusStrip;
private ToolStripProgressBar toolStripProgressBar;
private NumericUpDown requestedCountControl;
private Button goButton;
private TextBox outputTextBox;
private BackgroundWorker backgroundWorker;
private ToolStripStatusLabel toolStripStatusLabel;
private int requestedCount;
public FibonacciNumber()
{
Text = "Fibonacci";
// Prepare the StatusStrip.
progressStatusStrip = new StatusStrip();
toolStripProgressBar = new ToolStripProgressBar();
toolStripProgressBar.Enabled = false;
toolStripStatusLabel = new ToolStripStatusLabel();
progressStatusStrip.Items.Add(toolStripProgressBar);
progressStatusStrip.Items.Add(toolStripStatusLabel);
FlowLayoutPanel flp = new FlowLayoutPanel();
flp.Dock = DockStyle.Top;
Label beforeLabel = new Label();
beforeLabel.Text = "Calculate the first ";
beforeLabel.AutoSize = true;
flp.Controls.Add(beforeLabel);
requestedCountControl = new NumericUpDown();
requestedCountControl.Maximum = 1000;
requestedCountControl.Minimum = 1;
requestedCountControl.Value = 100;
flp.Controls.Add(requestedCountControl);
Label afterLabel = new Label();
afterLabel.Text = "Numbers in the Fibonacci sequence.";
afterLabel.AutoSize = true;
flp.Controls.Add(afterLabel);
goButton = new Button();
goButton.Text = "&Go";
goButton.Click += new System.EventHandler(button1_Click);
flp.Controls.Add(goButton);
outputTextBox = new TextBox();
outputTextBox.Multiline = true;
outputTextBox.ReadOnly = true;
outputTextBox.ScrollBars = ScrollBars.Vertical;
outputTextBox.Dock = DockStyle.Fill;
Controls.Add(outputTextBox);
Controls.Add(progressStatusStrip);
Controls.Add(flp);
backgroundWorker = new BackgroundWorker();
backgroundWorker.WorkerReportsProgress = true;
backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);
backgroundWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
backgroundWorker.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
// This method will run on a thread other than the UI thread.
// Be sure not to manipulate any Windows Forms controls created
// on the UI thread from this method.
backgroundWorker.ReportProgress(0, "Working...");
Decimal lastlast = 0;
Decimal last = 1;
Decimal current;
if (requestedCount >= 1)
{ AppendNumber(0); }
if (requestedCount >= 2)
{ AppendNumber(1); }
for (int i = 2; i < requestedCount; ++i)
{
// Calculate the number.
checked { current = lastlast + last; }
// Introduce some delay to simulate a more complicated calculation.
System.Threading.Thread.Sleep(100);
AppendNumber(current);
backgroundWorker.ReportProgress((100 * i) / requestedCount, "Working...");
// Get ready for the next iteration.
lastlast = last;
last = current;
}
backgroundWorker.ReportProgress(100, "Complete!");
}
private delegate void AppendNumberDelegate(Decimal number);
private void AppendNumber(Decimal number)
{
if (outputTextBox.InvokeRequired)
{ outputTextBox.Invoke(new AppendNumberDelegate(AppendNumber), number); }
else
{ outputTextBox.AppendText(number.ToString("N0") + Environment.NewLine); }
}
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
toolStripProgressBar.Value = e.ProgressPercentage;
toolStripStatusLabel.Text = e.UserState as String;
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Error is OverflowException)
{ outputTextBox.AppendText(Environment.NewLine + "**OVERFLOW ERROR, number is too large to be represented by the decimal data type**"); }
toolStripProgressBar.Enabled = false;
requestedCountControl.Enabled = true;
goButton.Enabled = true;
}
private void button1_Click(object sender, EventArgs e)
{
goButton.Enabled = false;
toolStripProgressBar.Enabled = true;
requestedCount = (int)requestedCountControl.Value;
requestedCountControl.Enabled = false;
outputTextBox.Clear();
backgroundWorker.RunWorkerAsync();
}
}
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// 你是 Winform 么？// 你添加一个窗体类，命名为 ProgressForm，会给你自动生成一个框架，大体如下，然后往里面添代码public partial class ProgressForm : Form{ public ProgressForm() { InitializeComponent(); } ......... // [color=#FF0000](1)[/color]}// 下面重写它的Loaded 事件，在属性对话框里面双击该事件，然后补代码：private void ProgressForm_Loaded ( object sender, EventArgs e ){ this.__myProgressBar.Minimum = 0; this.__myProgressBar.Maximum = 100; this.__myProgressBar.Value = 1; this.__myProgressBar.Step = 1; this.__myProgressBar.PerformStep();}// 你可以在可视化设计板里面往窗体上拖上一个 ProgressBar，设置它的属性，或者在窗体的Loaded事件里面写好。
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强大. 标记
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up
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{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
for (int i = 0; i < 10; i++)
{
Thread.CurrentThread.Join(1000);
this.progressBar1.PerformStep();
}
}
}
}
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晕，那么复杂，不用多线程也可以阿~~
pgsBar.Maxium=99;for (int i=0;i<100;i++){ pgsBar.Value=i; Thread.Sleep(100); Application.DoEvents();}
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.....
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up
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http://www.cnblogs.com/yuxuanji/articles/1095011.html
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学习一下
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如果要异步的话，貌似可以考虑使用BackgroudWorker控件...
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this.backgroundWorker1.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork);this.backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted); this.backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged); private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { BackgroundWorker worker = sender as BackgroundWorker;MethodA(worker,e); if (worker.CancellationPending) { e.Cancel = true; } } private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) { this.progressPercent.Value = e.ProgressPercentage; } private void MethodA(BackgroundWorker worker, DoWorkEventArgs e){ int totalPercent =100; int perComplete = 0; if (perComplete != (int)(((float)i / totalPercent) * 100)) { perComplete = (int)(((float)i / totalPercent) * 100); worker.ReportProgress(perComplete); }}
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private void button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < 10; i++)
{
Thread.CurrentThread.Join(500);
this.progressBar1.PerformStep();
}
}
效果明显些
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进度条是一个软件人性化考虑之一，他给用户的感觉就是程序内部在不停的动作，执行到了什么程度，而不是整个界面僵死，以至于用户不知道程序在做什么！ 看了好几个WinForm程序了，发现他们对进度条的处理完全失去了进度条的作用。他们都是采用Timer来处理，在线程结束的时候，直接赋值进度条达到100%。和我以前做WebForm程序的时候完全不一样，做WebForm程序的时候，进度条是根据总体数据和每步执行后而计算和更新的。在看了这几个WinForm程序后，我在想：是否所有WinForm程序，在进度条的处理上都不能保证实时进度显示？ 其实用Timer来处理，不停的更新进度条只是程序作者偷懒的方法。当然这样的好处就是可以简单化处理进度条，代码量少，不易出错，调试方便。 还有一种方法，就是可以及时更新进度条的数据的。那就是采用事件驱动机制，在子线程中监视复杂处理过程中的设定的事件，及时更新！直接看代码：程序代码using System;using System.ComponentModel;using System.Windows.Forms;namespace WindowsApplication1{ /// <summary> /// Form1 类 /// </summary> public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { //用子线程工作 new System.Threading.Thread(new System.Threading.ThreadStart(StartDownload)).Start(); } //开始下载 public void StartDownload() { Downloader downloader = new Downloader(); downloader.onDownLoadProgress += new Downloader.dDownloadProgress(downloader_onDownLoadProgress); downloader.Start(); } //同步更新UI void downloader_onDownLoadProgress(long total, long current) { if (this.InvokeRequired) { this.Invoke(new Downloader.dDownloadProgress(downloader_onDownLoadProgress), new object[] { total, current }); } else { this.progressBar1.Maximum = (int)total; this.progressBar1.Value = (int)current; } } } /// <summary> /// 下载类（您的复杂处理类） /// </summary> public class Downloader { //委托 public delegate void dDownloadProgress(long total,long current); //事件 public event dDownloadProgress onDownLoadProgress; //开始模拟工作 public void Start() { for (int i = 0; i < 100; i++) { if (onDownLoadProgress != null) onDownLoadProgress(100, i); System.Threading.Thread.Sleep(100); } } }}=================================ling========================================delegate object dlExecuteQuery(); private void button1_Click(object sender, EventArgs e) { dlExecuteQuery de=new dlExecuteQuery(this.Query()); IAsyncResult ir = de.BeginInvoke(null, null);Form f=new Form() f.ShowDialog(this); Application.DoEvents(); while (!ir.IsCompleted) { Application.DoEvents(); } object obj = de.EndInvoke(ir); f.Close(); }private object Query() { //长时间的操作 }
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学习学习了哈
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up，
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关注
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