Begins a presence query request for a given
list of targets for the given set of presence categories.
Namespace:
Microsoft.Rtc.Collaboration.Presence
Assembly:
Microsoft.Rtc.Collaboration(in
Microsoft.Rtc.Collaboration.dll)
Syntax
| Visual Basic (Declaration) |
Public
Function
BeginPresenceQuery ( _
targets
As
IEnumerable(
Of
String), _
categories
As
String(), _
queryResultHandler
As
EventHandler(
Of
RemotePresenceNotificationEventArgs), _
userCallback
As
AsyncCallback, _
state
As
Object _
)
As
IAsyncResult
|
| C# |
public
IAsyncResult
BeginPresenceQuery(
IEnumerable<
string>
targets,
string[]
categories,
EventHandler<
RemotePresenceNotificationEventArgs>
queryResultHandler,
AsyncCallback
userCallback,
Object
state
)
|
| Visual C++ |
public:
IAsyncResult^
BeginPresenceQuery(
IEnumerable<
String^>^
targets,
array<
String^>^
categories,
EventHandler<
RemotePresenceNotificationEventArgs^>^
queryResultHandler,
AsyncCallback^
userCallback,
Object^
state
)
|
| JavaScript |
function
beginPresenceQuery(
targets,
categories,
queryResultHandler,
userCallback,
state);
|
Parameters
-
targets
- Type:
IEnumerable
<
(Of
<
(
String
>
)
>
)
The list of target addresses for the query.
-
categories
- Type:
array<
String
>
[]
()
[]
The list of presence categories for the query. Categories
that can be set are "contactCard", "note", "state", "services", and
"calendarData".
-
queryResultHandler
- Type:
EventHandler
<
(Of
<
(
RemotePresenceNotificationEventArgs
>
)
>
)
EventHandler to be invoked as results become available. This
value can be null.
-
userCallback
- Type:
AsyncCallback
The method to be called when the asynchronous operation is
completed. This value can be null.
-
state
- Type:
Object
A user-provided object that distinguishes this particular
asynchronous operation from other asynchronous operations.
Return Value
An IAsyncResult that
references the asynchronous operation.
Remarks
See Also
