//********************************************
//Start
//********************************************
/// <summary>
/// <para>Subscribes to events with the given query and delivers
/// them, asynchronously, through the <see cref='System.Management.ManagementEventWatcher.EventArrived'/> event.</para>
/// </summary>
public void Start()
{
Initialize();
// Cancel any current event query
Stop();
// Submit a new query
SecurityHandler securityHandler = Scope.GetSecurityHandler();
IWbemServices wbemServices = scope.GetIWbemServices();
try
{
sink = new SinkForEventQuery(this, options.Context, wbemServices);
if (sink.Status < 0)
{
Marshal.ThrowExceptionForHR(sink.Status, WmiNetUtilsHelper.GetErrorInfo_f());
}
// For async event queries we should ensure 0 flags as this is
// the only legal value
int status = scope.GetSecuredIWbemServicesHandler(wbemServices).ExecNotificationQueryAsync_(
query.QueryLanguage,
query.QueryString,
0,
options.GetContext(),
sink.Stub);
if (status < 0)
{
if (sink != null)
{
sink.ReleaseStub();
sink = null;
}
if ((status & 0xfffff000) == 0x80041000)
{
ManagementException.ThrowWithExtendedInfo((ManagementStatus)status);
}
else
{
Marshal.ThrowExceptionForHR(status, WmiNetUtilsHelper.GetErrorInfo_f());
}
}
}
finally
{
securityHandler.Reset();
}
}
//********************************************
//Start
//********************************************
/// <summary>
/// <para>Subscribes for events with the given query and delivers them asynchronously, through the EventArrived event.</para>
/// </summary>
public void Start()
{
Initialize();
// Cancel any current event query
Stop();
SecurityHandler securityHandler = Scope.GetSecurityHandler();
int status = (int)ManagementStatus.NoError;
// Submit a new query
try
{
IWbemServices wbemServices = scope.GetIWbemServices();
sink = new SinkForEventQuery(this, options.GetContext(), wbemServices);
// For async event queries we should ensure 0 flags as this is
// the only legal value
status = wbemServices.ExecNotificationQueryAsync_(
query.QueryLanguage,
query.QueryString,
0,
options.GetContext(),
sink.Stub);
} catch (Exception e) {
// BUGBUG : securityHandler.Reset()?
if (sink != null) // BUGBUG : This looks dangerous
{
sink.ReleaseStub();
sink = null;
}
ManagementException.ThrowWithExtendedInfo(e);
} finally {
securityHandler.Reset();
}
if ((status & 0xfffff000) == 0x80041000)
{
ManagementException.ThrowWithExtendedInfo((ManagementStatus)status);
}
else if ((status & 0x80000000) != 0)
{
Marshal.ThrowExceptionForHR(status);
}
}
//********************************************
//Start
//********************************************
/// <summary>
/// <para>Subscribes to events with the given query and delivers
/// them, asynchronously, through the <see cref='System.Management.ManagementEventWatcher.EventArrived'/> event.</para>
/// </summary>
public void Start()
{
Initialize ();
// Cancel any current event query
Stop ();
// Submit a new query
SecurityHandler securityHandler = Scope.GetSecurityHandler();
IWbemServices wbemServices = scope.GetIWbemServices();
try
{
sink = new SinkForEventQuery(this, options.Context, wbemServices);
if (sink.Status < 0)
{
Marshal.ThrowExceptionForHR(sink.Status);
}
// For async event queries we should ensure 0 flags as this is
// the only legal value
int status = scope.GetSecuredIWbemServicesHandler(wbemServices).ExecNotificationQueryAsync_(
query.QueryLanguage,
query.QueryString,
0,
options.GetContext(),
sink.Stub);
if (status < 0)
{
if (sink != null)
{
sink.ReleaseStub();
sink = null;
}
if ((status & 0xfffff000) == 0x80041000)
ManagementException.ThrowWithExtendedInfo((ManagementStatus)status);
else
Marshal.ThrowExceptionForHR(status);
}
}
finally
{
securityHandler.Reset();
}
}