当我点击登录按钮时,我的后台工作人员开始处理并显示一个加载对话框窗口。
但是,我的任务完成后如何关闭它?
private void LoginButton_Click(object sender, RoutedEventArgs e)
{
AdjustControls(false);
if (Username == null)
{
Error("Username required");
return;
}
loading.ShowDialog();
backgroundWorker = new BackgroundWorker();
backgroundWorker.DoWork += login_backgroundWorker_DoWork;
backgroundWorker.ProgressChanged += login_backgroundWorker_ProgressChanged;
backgroundWorker.RunWorkerCompleted += login_backgroundWorker_RunWorkerCompleted;
backgroundWorker.WorkerReportsProgress = true;
backgroundWorker.RunWorkerAsync();
}
private void login_backgroundWorker_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
var backgroundWorker = sender as BackgroundWorker;
try
{
this.Dispatcher.Invoke(new MethodInvoker(delegate ()
{
loading.ShowDialog();
Action closeAction = () => loading.Close();
loading.Dispatcher.Invoke(closeAction);
this.Close();
}));
}
catch (Exception InputChangedException)
{
Console.WriteLine(InputChangedException);
if (InputChangedException != null)
{
Error(InputChangedException.Message);
}
}
}
private void login_backgroundWorker_ProgressChanged(object sender, System.ComponentModel.ProgressChangedEventArgs e)
{
}
private void login_backgroundWorker_RunWorkerCompleted(object sender, System.ComponentModel.RunWorkerCompletedEventArgs e)
{
this.Dispatcher.Invoke(new MethodInvoker(delegate ()
{
loading.Close();
}));
}
答案 0 :(得分:0)
我找到了答案,看起来很简单。我只需要设置一个操作:
this.Dispatcher.BeginInvoke(new Action(() => loading.ShowDialog()));
这是启动它,然后再关闭它