我发现一种很好的方法来执行后台工作并更新GUI是使用后台处理程序。但是,对于这个(愚蠢)的小任务(从1数到10000),它没有更新标签内容,而是打印到调试器!(当然,这只是另一个项目的尝试解决方案...)
下面是代码:
下面是代码:
public partial class MainWindow : Window
{
BackgroundWorker bw = new BackgroundWorker();
public MainWindow()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
bw.DoWork += new DoWorkEventHandler(bw_DoWork);
bw.ProgressChanged += new ProgressChangedEventHandler(bw_ProgressChanged);
bw.WorkerReportsProgress = true;
bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bw_RunWorkerCompleted);
bw.RunWorkerAsync();
}
void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
MessageBox.Show("DONE");
}
void bw_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
label1.Content = "going here: "+e.ProgressPercentage;
Debug.WriteLine(e.ProgressPercentage);
}
void bw_DoWork(object sender, DoWorkEventArgs e)
{
for (int i=0; i < 10000; i++)
{
bw.ReportProgress((i*100)/10000);
}
}
}