后台工作人员c#
可能重复:后台工作人员c#,c#,winforms,C#,Winforms,可能重复: 请告诉我如何使用backgroundworker,或者在应用程序执行一些长过程时,我必须使用什么来防止gui冻结 当我执行ping过程或其他操作时,Gui会冻结。。这很烦人,我想在ping时显示ping不同主机的结果,但它会被冻结,直到它停止ping列表中的所有主机。以下是一个: 使用System.ComponentModel; 使用System.Windows; 使用System.Windows.Controls; 命名空间SL_BackgroundWorker_CS { 公共部
请告诉我如何使用backgroundworker,或者在应用程序执行一些长过程时,我必须使用什么来防止gui冻结 当我执行ping过程或其他操作时,Gui会冻结。。这很烦人,我想在ping时显示ping不同主机的结果,但它会被冻结,直到它停止ping列表中的所有主机。以下是一个:
使用System.ComponentModel;
使用System.Windows;
使用System.Windows.Controls;
命名空间SL_BackgroundWorker_CS
{
公共部分类页面:UserControl
{
私有BackgroundWorker bw=新BackgroundWorker();
公共网页()
{
初始化组件();
bw.WorkerReportsProgress=true;
bw.workersupport扫描单元=真;
bw.DoWork+=新DoWorkEventHandler(bw_DoWork);
bw.ProgressChanged+=新的ProgressChangedEventHandler(bw\U ProgressChanged);
bw.RunWorkerCompleted+=新的RunWorkerCompletedEventHandler(bw\u RunWorkerCompleted);
}
私有无效按钮开始单击(对象发送者,路由目标)
{
如果(bw.IsBusy!=真)
{
RunWorkerAsync();
}
}
私有无效按钮取消单击(对象发送者,路由目标)
{
如果(bw.workersupport扫描单元==真)
{
CancelAsync();
}
}
私有void bw_DoWork(对象发送方,DoWorkEventArgs e)
{
BackgroundWorker worker=发件人作为BackgroundWorker;
对于(inti=1;(i)当它冻结时,您可以从演示如何使用它中获益。我从来没有遇到过这个问题。
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
namespace SL_BackgroundWorker_CS
{
public partial class Page : UserControl
{
private BackgroundWorker bw = new BackgroundWorker();
public Page()
{
InitializeComponent();
bw.WorkerReportsProgress = true;
bw.WorkerSupportsCancellation = true;
bw.DoWork += new DoWorkEventHandler(bw_DoWork);
bw.ProgressChanged += new ProgressChangedEventHandler(bw_ProgressChanged);
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);
}
private void buttonStart_Click(object sender, RoutedEventArgs e)
{
if (bw.IsBusy != true)
{
bw.RunWorkerAsync();
}
}
private void buttonCancel_Click(object sender, RoutedEventArgs e)
{
if (bw.WorkerSupportsCancellation == true)
{
bw.CancelAsync();
}
}
private void bw_DoWork(object sender, DoWorkEventArgs e)
{
BackgroundWorker worker = sender as BackgroundWorker;
for (int i = 1; (i <= 10); i++)
{
if ((worker.CancellationPending == true))
{
e.Cancel = true;
break;
}
else
{
// Perform a time consuming operation and report progress.
System.Threading.Thread.Sleep(500);
worker.ReportProgress((i * 10));
}
}
}
private void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if ((e.Cancelled == true))
{
this.tbProgress.Text = "Canceled!";
}
else if (!(e.Error == null))
{
this.tbProgress.Text = ("Error: " + e.Error.Message);
}
else
{
this.tbProgress.Text = "Done!";
}
}
private void bw_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
this.tbProgress.Text = (e.ProgressPercentage.ToString() + "%");
}
}
}
BackgroundWorker worker = new BackgroundWorker();
public Form1()
{
InitializeComponent();
worker.DoWork += worker_DoWork;
worker.RunWorkerCompleted += worker_RunWorkerCompleted;
worker.RunWorkerAsync();//Calls worker_DoWork on a separate thread.
}
void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)//Runs when worker_DoWork is completed.
{
//
}
void worker_DoWork(object sender, DoWorkEventArgs e)
{
//
}