微软MCAD 70-310 实战百题
题目内容

You create a Windows service named myService that queries a table named Orders in a Microsoft SQL Server database. You want myService to check every 30 seconds for now rows in Orders.You create the following method in myService:Private Sub ProcessOrders(ByVal source As Object, ByVal event- arguments As Timers.ElapsedEventArgs)'Logic to process Orders table goes here.End SubYou need to add additional code to myService to invoke the ProcessOrders method.What should you do?

2021-12-25

A.To the OnStart method, add the following code segment:Dim myTimer As New Timers.Timer()AddHandler myTimer.Elapsed, AddressOfProcessOrders myTimer.Interval = 30000 myTimer.Enabled = True

B.To the OnCustomCommand method, add the following code segment: Dim myTimer As New Timers.Timer ()AddHandler myTimer.Elapsed, AddressOf ProcessOrders myTimer.Interval = 30000 myTimer.Enabled = True

C.To the OnStart method, add the following code segment: Dim myTimer As New Timers.Timer ()AddHandler myTimer.Elapsed, AddressOf ProcessOrders myTimer.Interval = 30000 myTimer.AutoReset = True

D.To the OnCustomCommand method, add the following code segment: Dim myTimer As New Timers.Timer ()AddHandler myTimer.Elapsed, AddressOf ProcessOrders myTimer.Interval = 30000 myTimer.AutoReset = True

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