private void OnGetEndpointsComplete(IAsyncResult result)
{
GetEndpointsData data = result.AsyncState as GetEndpointsData;
try
{
EndpointDescriptionCollection endpoints = null;
data.DiscoveryClient.EndGetEndpoints(result, out endpoints);
data.Endpoints = endpoints;
data.OperationCompleted();
}
catch (Exception e)
{
data.Exception = e;
data.OperationCompleted();
}
}
public List <EndpointDescription> EndGetEndpoints(IAsyncResult result)
{
GetEndpointsData data = result as GetEndpointsData;
if (data == null)
{
throw new ArgumentException("Did not pass the correct IAsyncResult to end method.", "success");
}
try
{
if (!data.WaitForComplete())
{
throw new TimeoutException();
}
return(data.Endpoints);
}
finally
{
data.DiscoveryClient.Close();
}
}
public IAsyncResult BeginGetEndpoints(
string endpointUrl,
string endpointTransportProfileUri,
AsyncCallback callback,
object callbackData)
{
DiscoveryClient client = CreateClient(endpointUrl, endpointTransportProfileUri);
GetEndpointsData data = new GetEndpointsData(callback, callbackData, client.OperationTimeout)
{
DiscoveryClient = client
};
data.InnerResult = client.BeginGetEndpoints(
null,
endpointUrl,
new StringCollection(PreferredLocales),
null,
OnGetEndpointsComplete,
data);
return(data);
}
private void OnGetEndpointsComplete(IAsyncResult result)
{
if (InvokeRequired)
{
BeginInvoke(new AsyncCallback(OnGetEndpointsComplete), result);
return;
}
GetEndpointsData data = (GetEndpointsData)result.AsyncState;
try
{
List <EndpointDescription> endpoints = data.Lds.EndGetEndpoints(result);
if (DiscoveryTreeView.SelectedNode == data.Parent)
{
ShowEndpointDescriptions(endpoints);
}
}
catch (Exception e)
{
Opc.Ua.Client.Controls.ExceptionDlg.Show(Text, e);
}
}
