RemotePresence.BeginRemoveTarget Method
Begins an asynchronous operation to unsubscribe to a target.
Namespace: Microsoft.Rtc.Collaboration.Presence
Assembly: Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)
Syntax
'Declaration
Public Function BeginRemoveTarget ( _
uri As String, _
userCallback As AsyncCallback, _
state As Object _
) As IAsyncResult
'Usage
Dim instance As RemotePresence
Dim uri As String
Dim userCallback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult
returnValue = instance.BeginRemoveTarget(uri, _
userCallback, state)
public IAsyncResult BeginRemoveTarget(
string uri,
AsyncCallback userCallback,
Object state
)
Parameters
- uri
Type: System.String
The URI of the target to remove.
- userCallback
Type: System.AsyncCallback
The method to be called when the asynchronous operation is completed.
- state
Type: System.Object
A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.
Return Value
Type: System.IAsyncResult
An IAsyncResult that references the asynchronous operation.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | Thrown when uri is null. |
| ArgumentException | Thrown when uri is an invalid sip URI or a subscription does not exist for this target. |