Initializes a cancelable asynchronous query of WorkItem objects by using a callback function.
Namespace:  Microsoft.TeamFoundation.WorkItemTracking.Client
Assembly:  Microsoft.TeamFoundation.WorkItemTracking.Client (in Microsoft.TeamFoundation.WorkItemTracking.Client.dll)
Syntax
声明
Public Function BeginQuery ( _
    callBack As AsyncCallback _
) As ICancelableAsyncResult
public ICancelableAsyncResult BeginQuery(
    AsyncCallback callBack
)
public:
ICancelableAsyncResult^ BeginQuery(
    AsyncCallback^ callBack
)
member BeginQuery : 
        callBack:AsyncCallback -> ICancelableAsyncResult 
public function BeginQuery(
    callBack : AsyncCallback
) : ICancelableAsyncResult
Parameters
- callBack
 Type: System.AsyncCallback
 The function to call when this method has completed.
Return Value
Type: Microsoft.TeamFoundation.Client.ICancelableAsyncResult
An object that represents the status of the cancelable asynchronous query.
Remarks
This method should be followed by Query.RunQuery() to execute the query.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.