WPF不同线程之间的控件的访问

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原文:WPF不同线程之间的控件的访问

WPF不同线程之间的控件是不同访问的，为了能够访问其他线程之间的控件，需要用Dispatcher.Invoke执行一个新的活动即可。

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、异步打开窗口

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、全局异步调用

Application.Current.Dispatcher.Invoke(new Action(() =>
{
AddText();
})); this.Dispatcher.Invoke(new Action(() =>
{
AddText();
}));Application.Current.Dispatcher.Invoke(new Action(delegate { AddText();}));