WPF不同線程之間的控件的訪問
阿新 • • 發佈：2019-04-15
notes har false true ble form int() ive init 原文:WPF不同線程之間的控件的訪問
WPF不同線程之間的控件是不同訪問的，為了能夠訪問其他線程之間的控件，需要用Dispatcher.Invoke執行一個新的活動即可。
例如：
public void SetNotes(string notes)
{
if (Dispatcher.Thread != Thread.CurrentThread)
{
this.txtNote.Dispatcher.Invoke(new Action(() =>
{
this.txtNote.Text += notes;
this.txtNote.Text += "\r";
this.txtNote.ScrollToEnd();
}));
}
else
{
this.txtNote.Text += notes;
this.txtNote.Text += "\r";
this.txtNote.ScrollToEnd();
}
}
WinForm中：
private delegate void delegateCrossThread(string message); private void SetStatus(string message) { if (this.m_StatusLabel.InvokeRequired == true) { delegateCrossThread ct = new delegateCrossThread(SetStatus);this.Invoke(ct, new object[] { message }); } else { this.m_StatusLabel.Text = message; this.m_StatusLabel.Refresh(); } }
3、異步打開窗口
Thread newWindowThread = new Thread(new ThreadStart(ThreadStartingPoint)); newWindowThread.SetApartmentState(ApartmentState.STA); newWindowThread.Start();private void ThreadStartingPoint() { SurveyStatWindow surveyStatDialog = new SurveyStatWindow(); if (m_StatDataTable != null) { surveyStatDialog.TimeData = m_StatDataTable; surveyStatDialog.Init(); } surveyStatDialog.ShowDialog(); }
4、全局異步調用
Application.Current.Dispatcher.Invoke(new Action(() =>
{
AddText();
}));
this.Dispatcher.Invoke(new Action(() =>
{
AddText();
}));
Application.Current.Dispatcher.Invoke(new Action(delegate { AddText();}));
WPF不同線程之間的控件的訪問