C# 如何在流程完成时加载进度条?
我正在使用以下命令ping主机名:C# 如何在流程完成时加载进度条?,c#,process,progress-bar,C#,Process,Progress Bar,我正在使用以下命令ping主机名: Process p = new Process(); p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.CreateNoWindow = true; p.StartInfo.FileName = "cmd.exe"; p.StartI
Process p = new Process();
p.StartInfo.UseShellExecute = false;
p.StartInfo.RedirectStandardOutput = true;
p.StartInfo.CreateNoWindow = true;
p.StartInfo.FileName = "cmd.exe";
p.StartInfo.Arguments = pingData;
p.Start();
p.WaitForExit();
string result = p.StandardOutput.ReadToEnd();
System.Windows.Forms.Clipboard.SetText(result);
if(p.HasExited)
{
richTextBox1.Text = result;
outPut = result;
MessageBox.Show( "Ping request has completed. \n Results have been copied to the clipboard.");
}
在ping命令期间,是否有一个进度条“加载”,并在ping完成后完成加载
谢谢。甚至有一个关于如何使用Ping的示例。根据您希望显示进度条的方式,您可以修改示例,让事件处理程序设置一个标志,指示ping已完成。然后,在主执行线程中添加一个while循环,该循环将进度条填充为已用时间/超时值的百分比。下面是作为示例重新格式化的示例
namespace PingTest
{
using global::System;
using System.Diagnostics;
using global::System.Net.NetworkInformation;
using System.Text;
using System.Threading;
/// <summary>
/// The ping example.
/// </summary>
public class PingExample
{
#region Static Fields
private static bool pingComplete;
#endregion
#region Public Methods and Operators
public static void DisplayReply(PingReply reply)
{
if (reply == null)
{
return;
}
Console.WriteLine("ping status: {0}", reply.Status);
if (reply.Status == IPStatus.Success)
{
Console.WriteLine("Address: {0}", reply.Address);
Console.WriteLine("RoundTrip time: {0}", reply.RoundtripTime);
Console.WriteLine("Time to live: {0}", reply.Options.Ttl);
Console.WriteLine("Don't fragment: {0}", reply.Options.DontFragment);
Console.WriteLine("Buffer size: {0}", reply.Buffer.Length);
}
}
public static void Main(string[] args)
{
if (args.Length == 0)
{
throw new ArgumentException("Ping needs a host or IP Address.");
}
string who = args[0];
var waiter = new AutoResetEvent(false);
var pingSender = new Ping();
// When the PingCompleted event is raised,
// the PingCompletedCallback method is called.
pingSender.PingCompleted += PingCompletedCallback;
// Create a buffer of 32 bytes of data to be transmitted.
const string Data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
byte[] buffer = Encoding.ASCII.GetBytes(Data);
// Wait 12 seconds for a reply.
const int Timeout = 12000;
// Set options for transmission:
// The data can go through 64 gateways or routers
// before it is destroyed, and the data packet
// cannot be fragmented.
var options = new PingOptions(64, true);
Console.WriteLine("Time to live: {0}", options.Ttl);
Console.WriteLine("Don't fragment: {0}", options.DontFragment);
// Send the ping asynchronously.
// Use the waiter as the user token.
// When the callback completes, it can wake up this thread.
pingComplete = false;
var watch = Stopwatch.StartNew();
watch.Start();
pingSender.SendAsync(who, Timeout, buffer, options, waiter);
while (!pingComplete && watch.ElapsedMilliseconds <= Timeout)
{
// Do display stuff for your progress bar here.
}
// Prevent this example application from ending.
// A real application should do something useful
// when possible.
waiter.WaitOne();
Console.WriteLine("Ping example completed.");
Console.ReadLine();
}
#endregion
#region Methods
private static void PingCompletedCallback(object sender, PingCompletedEventArgs e)
{
// If the operation was canceled, display a message to the user.
if (e.Cancelled)
{
Console.WriteLine("Ping canceled.");
// Let the main thread resume.
// UserToken is the AutoResetEvent object that the main thread
// is waiting for.
((AutoResetEvent)e.UserState).Set();
}
// If an error occurred, display the exception to the user.
if (e.Error != null)
{
Console.WriteLine("Ping failed:");
Console.WriteLine(e.Error.ToString());
// Let the main thread resume.
((AutoResetEvent)e.UserState).Set();
}
PingReply reply = e.Reply;
pingComplete = true;
DisplayReply(reply);
// Let the main thread resume.
((AutoResetEvent)e.UserState).Set();
}
#endregion
}
}
名称空间PingTest
{
使用全局::系统;
使用系统诊断;
使用global::System.Net.NetworkInformation;
使用系统文本;
使用系统线程;
///
///ping示例。
///
公共类示例
{
#区域静态场
私有静态bool-pingComplete;
#端区
#区域公共方法和运算符
公共静态void DisplayReply(PingReply-reply)
{
if(reply==null)
{
返回;
}
WriteLine(“ping状态:{0}”,reply.status);
if(reply.Status==IPStatus.Success)
{
WriteLine(“地址:{0}”,reply.Address);
WriteLine(“往返时间:{0}”,reply.RoundtripTime);
WriteLine(“生存时间:{0}”,reply.Options.Ttl);
WriteLine(“不分段:{0}”,reply.Options.DontFragment);
WriteLine(“缓冲区大小:{0}”,reply.Buffer.Length);
}
}
公共静态void Main(字符串[]args)
{
如果(args.Length==0)
{
抛出新的ArgumentException(“Ping需要主机或IP地址”);
}
字符串who=args[0];
var WAERER=新自动重置事件(假);
var pingSender=new Ping();
//当引发PingCompleted事件时,
//调用PingCompletedCallback方法。
pingSender.PingCompleted+=PingCompletedCallback;
//创建一个包含32字节数据的缓冲区以进行传输。
const string Data=“aaaaaaaaaaaaaaaaaaaaaaaaaaaa”;
byte[]buffer=Encoding.ASCII.GetBytes(数据);
//等待12秒钟,等待答复。
常数int超时=12000;
//设置变速器的选项:
//数据可以通过64个网关或路由器
//在它被销毁之前,数据包
//不能分割。
var options=新的PingOptions(64,true);
WriteLine(“生存时间:{0}”,options.Ttl);
WriteLine(“不分段:{0}”,options.DontFragment);
//异步发送ping。
//使用服务员作为用户令牌。
//回调完成后,它可以唤醒此线程。
pingComplete=false;
var watch=Stopwatch.StartNew();
watch.Start();
pingSender.SendAsync(谁、超时、缓冲区、选项、服务员);
虽然(!pingComplete&&watch.elapsedmillishes),但真正的问题是,如何确定进度条的位置?您完全可以在进程执行时让进度条运行,并对其进行更新,但除非您要读取和解释STD输出(即使对于“静默”进程也不起作用),你不知道它的值是什么。我可以给你一些通用的线程代码来更新进度条,但就评估“进程完成”而言,我认为你会走运。