Cancels the execution of a pending Execute or Open call.
The Cancel method is used to cancel the last pending, asynchronous call involving either the Execute or the
Open methods of the Connection object.
This requires that the Options parameter of the Open method be set to the adSyncConnect ADO constant
or that the Options parameter of the Execute method be set to either the adAsyncExecute
or adAsyncFetch ADO constant.
Otherwise, a run-time error will be generated.
An asynchronous call returns control to the calling program before the operation is completed and allows
the execution of the code to continue.
objConnection.Cancel