Daily Tips- Tip #41 -What is the short-cut for uncommenting code ?

Ctrl + K, Ctrl + U

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Daily Tips- Tip #40 -What is the Short-cut for commenting out the code?

Ctrl + K, Ctrl + C

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What is the expansion of CAO?

Client-Activated Objects.

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Daily Tips- Tip #39 - How will you beging a running a standard application message loop on the current thread?

Application.Run(new Form1());

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Daily Tips- Tip #38 - What is the method in MS Exception Management Application Block which is used to publish exceptions?

ExceptionManager.Publish(ex);

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Is it true that objects don't always get destroyed immediately when the last reference goes away?

Yes. The garbage collector offers no guarantees about the time when an object will be destroyed and its memory reclaimed.

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Daily Tips- Tip #37 - What is the best way to check for a null and an empty value in a string?

string mystr;
if (String.IsNullOrEmpty(mystr))

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