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You have an SQL query that takes one minute to execute. You use the following code segment to execute the SQL query asynchronously. Dim ar As IAsyncResult = cmd.BeginExecuteReader( ) You need to execute a method named DoWork( ) that takes one second to run while the SQL query is executing. DoWork( ) must run as many times as possible while the SQL query is executing. Which code segment should you use?()

发布日期:2020-04-10

You have an SQL query that takes one minute to exe...
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