[英]How to raise cross thread event
如何從另一個線程中引發事件GeocodeAddressEventHandler?
System.Threading.Thread MapThread;
WinformMap map ;
public delegate void GeocodeAddressEventHandler(object sender, EventArgs e);
public event GeocodeAddressEventHandler GeocodeAddressEvent;
//How to Raise this Event from another thread??
public void GeocodeAddress_Raised(object sender, EventArgs e)
{
MapLib.GeocodeAddress("12798 1ST ST", "", "", "");
}
public bool LoadMap(string restorepoint)
{
////////////////////////Engine Controls////////////////////////////////////////////////////////
try
{
System.ServiceModel.OperationContext context = System.ServiceModel.OperationContext.Current;
//This is to instantiate a winform from a Console (will convert to service shortly)
MapThread = new System.Threading.Thread(new System.Threading.ThreadStart(delegate
{
using (System.ServiceModel.OperationContextScope scope = new System.ServiceModel.OperationContextScope(context))
{
this.GeocodeAddressEvent += new GeocodeAddressEventHandler(GeocodeAddress_Raised);
}
}));
MapThread.SetApartmentState(System.Threading.ApartmentState.STA);
MapThread.Start();
MapThread.Join();
}
catch (Exception ex)
{
return false;
}
return true;
}
實際上,事實證明,在委托的范圍終止后,該線程正在終止。 這可能是一種愚蠢的方式,但我在該范圍內放置了一段時間Queue.empty {sleep},因此它永遠不會終止,然后我從另一個線程啟動了LoadMap,這樣它就會堵塞我的WCF服務等待無休止的隊列終止。
看一下Invoke()
方法:
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