need help to solve question.

Question

I am prepairing .net exam and trying to solve this question. any help appreciated


you need to write a multicast deledate that accepts DateTime argument and returns a Boolean value. Which code segment should you use?

A. public delegate int PowerDeviceOn(bool, DateTime);
B. public delegate bool PowerDeviceOn(Object, EventArgs);
C. public delegate void PowerDeviceOn(DateTime);
D. public delegate bool PowerDeviceOn(DateTime);

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asim

Answer 1

Sorry dude, this is an easy exam question ... we really don't want to do your school work for you. Look carefully at the signatures of the 4 statements ... take into account the parameters passed and the value returned. No more clues from me.

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~~Bonnie Berent [C# MVP]

(new blog --- not many posts yet --- be patient)
geek-goddess-bonnie.blogspot.com

Answer 2

I agree with bonnie. Check for information about delegate, write an example & you would know what params & signatures should be followed while writing a delegate.

http://msdn.microsoft.com/en-us/library/aa288459%28VS.71%29.aspx

FYI. I passed 70-536 a week ago & I still remember the answer for this question given in the test prep CD.. lol. There is plethora of information & examples all over the MSDN site for reference.



Good Luck.

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Learning C# & .NET

Answer 3

I think the answer is D.

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asim

Answer 4

The answer is C.

You are right in case of Singlecast delegate, but the question clearly says that you need to write a MulticastDelegate.

System.MulticastDelegate inherits from System.Delegate.

Check this article for more reference.
http://msdn.microsoft.com/en-us/library/system.multicastdelegate%28VS.71%29.aspx

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Learning C# & ASP.NET