试题详情
- 单项选择题 You are creating a Windows application by using the .NET Framework 3.5.You plan to create a form that might result in a timeconsuming operation.You use the QueueUserWorkItem method and a Label control named lblResult.You need to update the users by using the lblResult control when the process has completed the operation. Which code segment should you use？（）
A、A
B、B
C、C
D、D
- A
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