ContactGroupServices.BeginAddContact Method (String, AsyncCallback, Object)

Begins an asynchronous operation to add a contact.

Namespace:  Microsoft.Rtc.Collaboration.ContactsGroups
Assembly:  Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)

Syntax

'Declaration
Public Function BeginAddContact ( _
    contactUri As String, _
    userCallback As AsyncCallback, _
    state As Object _
) As IAsyncResult
'Usage
Dim instance As ContactGroupServices
Dim contactUri As String
Dim userCallback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult

returnValue = instance.BeginAddContact(contactUri, _
    userCallback, state)
public IAsyncResult BeginAddContact(
    string contactUri,
    AsyncCallback userCallback,
    Object state
)

Parameters

  • 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
InvalidOperationException

Thrown when the subscription state is not idle or subscribed.

ArgumentException

Thrown when contactUri is an invalid sip URI.

See Also

Reference

ContactGroupServices Class

ContactGroupServices Members

BeginAddContact Overload

Microsoft.Rtc.Collaboration.ContactsGroups Namespace