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Question ID 16990

You are implementing a method named Calculate that performs conversions between
value types and reference types. The following code segment implements the method.
(Line numbers are included for reference only.)

Option A

int balance = (int) (float)amountRef;

Option B

int balance = (int)amountRef;

Option C

 int balance = amountRef;

Option D

int balance = (int) (double) amountRef;

Correct Answer A
Explanation


Question ID 16991

You are developing an application by using C#. The application includes the following code
segment. (Line numbers are included for reference only.)

The DoWork() method must not throw any exceptions when converting the obj object to the
IDataContainer interface or when accessing the Data property.
You need to meet the requirements. Which code segment should you insert at line 07?

Option A

var dataContainer = (IDataContainer)obj;

Option B

dynamic dataContainer = obj;

Option C

 var dataContainer = obj is IDataContainer;

Option D

var dataContainer = obj as IDataContainer;

Correct Answer D
Explanation Explanation: As - The as operator is like a cast operation. However, if the conversion isn't possible, as returns null instead of raising an exception. http://msdn.microsoft.com/en-us/library/cscsdfbt(v=vs.110).aspx

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