看了好幾個(gè)WinForm程序了，發(fā)現(xiàn)他們對(duì)進(jìn)度條的處理完全失去了進(jìn)度條的作用。他們都是采用Timer來(lái)處理，在線程結(jié)束的時(shí)候，直接賦值進(jìn)度條達(dá)到100%。和我以前做WebForm程序的時(shí)候完全不一樣，做WebForm程序的時(shí)候，進(jìn)度條是根據(jù)總體數(shù)據(jù)和每步執(zhí)行后而計(jì)算和更新的。在看了這幾個(gè)WinForm程序后，我在想：是否所有WinForm程序，在進(jìn)度條的處理上都不能保證實(shí)時(shí)進(jìn)度顯示？

　　其實(shí)用Timer來(lái)處理，不停的更新進(jìn)度條只是程序作者偷懶的方法。當(dāng)然這樣的好處就是可以簡(jiǎn)單化處理進(jìn)度條，代碼量少，不易出錯(cuò)，調(diào)試方便。

　　還有一種方法，就是可以及時(shí)更新進(jìn)度條的數(shù)據(jù)的。那就是采用事件驅(qū)動(dòng)機(jī)制，在子線程中監(jiān)視復(fù)雜處理過(guò)程中的設(shè)定的事件，及時(shí)更新！直接看代碼：
程序代碼using System;
using System.ComponentModel;
using System.Windows.Forms;
namespace WindowsApplication1
{
     /// <summary>
     /// Form1 類
     /// </summary>
     public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }
         private void button1_Click(object sender, EventArgs e)
         {
             //用子線程工作
             new System.Threading.Thread(new System.Threading.ThreadStart(StartDownload)).Start();
         }
         //開(kāi)始下載
         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>
     /// 下載類（您的復(fù)雜處理類）
     /// </summary>
     public class Downloader
     {
         //委托
         public delegate void dDownloadProgress(long total,long current);
         //事件
         public event dDownloadProgress onDownLoadProgress;
         //開(kāi)始模擬工作
         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 void btnCount_Click(object sender, EventArgs e)
{
label1.Visible=true;
progressBar.Visible = true;
progressBar.Minimum = 0;
progressBar.Maximum = ds.Tables["表"].Rows.Count;
progressBar.BackColor = Color.Green;
for (int i = 0; i < ds.Tables["表"].Rows.Count; i++)
{
progressBar.Value++;
Application.DoEvents();
this.label1.Text = Convert.ToString(progressBar.Value);
}
}

或者

private void btnCount_Click(object sender, EventArgs e)
        {
            label1.Visible=true;
            progressBar.Visible = true;
            progressBar.Minimum = 0;
            progressBar.Maximum = ds.Tables["表"].Rows.Count;
            progressBar.BackColor = Color.Green;
            for (int i = 0; i  < ds.Tables["表"].Rows.Count; i++)
            {
               progressBar.Value++;
               Application.DoEvents();
                this.label1.Text = Convert.ToString(progressBar.Value);this.label1.Refresh();
            }

        }
http://blog.163.com/light_warm/blog/static/3168104200861710226745/





另：



 建立一個(gè)listBox將進(jìn)程名稱遍歷進(jìn)去

this.listBox1.Items.Clear();
Process[] MyProcesses=Process.GetProcesses();
foreach(Process MyProcess in MyProcesses)
{
this.listBox1.Items.Add(MyProcess.ProcessName);
}
this.listBox1.SelectedIndex=0;
 
 選中l(wèi)istBox里面的項(xiàng)后將進(jìn)程詳細(xì)信息顯示在右面的Label中
try
{
string ProcessName=this.listBox1.Text;
this.groupBox1.Text=ProcessName+"進(jìn)程的詳細(xì)信息";
Process[] MyProcess=Process.GetProcessesByName(ProcessName);
this.label1.Text="進(jìn)程影象名："+MyProcess[0].ProcessName;
this.label2.Text="進(jìn)程ID："+MyProcess[0].Id;
this.label3.Text="啟動(dòng)線程樹(shù)："+MyProcess[0].Threads.Count.ToString();
this.label4.Text="CPU占用時(shí)間："+MyProcess[0].TotalProcessorTime.ToString();
this.label5.Text="線程優(yōu)先級(jí)："+MyProcess[0].PriorityClass.ToString();
this.label6.Text="啟動(dòng)時(shí)間："+MyProcess[0].StartTime.ToLongTimeString();
this.label7.Text="專用內(nèi)存："+(MyProcess[0].PrivateMemorySize/1024).ToString()+"K";
this.label8.Text="峰值虛擬內(nèi)存："+(MyProcess[0].PeakVirtualMemorySize/1024).ToString()+"K";
this.label9.Text="峰值分頁(yè)內(nèi)存："+(MyProcess[0].PeakPagedMemorySize/1024).ToString()+"K";
this.label10.Text="分頁(yè)系統(tǒng)內(nèi)存："+(MyProcess[0].PagedSystemMemorySize/1024).ToString()+"K";
this.label11.Text="分頁(yè)內(nèi)存："+(MyProcess[0].PagedMemorySize/1024).ToString()+"K";
this.label12.Text="未分頁(yè)系統(tǒng)內(nèi)存："+(MyProcess[0].NonpagedSystemMemorySize/1024).ToString()+"K";
this.label13.Text="物理內(nèi)存："+(MyProcess[0].WorkingSet/1024).ToString()+"K";
this.label14.Text="虛擬內(nèi)存："+(MyProcess[0].VirtualMemorySize/1024).ToString()+"K";
}
catch(Exception Err)
{
MessageBox.Show("沒(méi)有此進(jìn)程，無(wú)法獲取信息！","信息提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
//不處理異常
            }