Exam 70-483 Topic 5 Question 5 Discussion

Actual exam question for Microsoft's 70-483 exam
Question #: 5
Topic #: 5
You are developing a C# application. The application includes the following code segment, (Line numbers are included for reference only.)

The application fails at line 17 with the following error message: "An item with the same key has already been added." You need to resolve the error.
Which code segment should you insert at line 16?

Suggested Answer: A Vote an answer

Explanation: The dictionary<TKey,TValue>.ContainsKey method (TKey) determines whether the Dictionary<TKey,TValue> contains the specified key.
Reference: Dictionary<TKey,TValue>.ContainsKey Method (TKey)
https://msdn.microsoft.com/en-us/library/kw5aaea4(v=vs.110).aspx

by Gene at Aug 27, 2026, 09:05 PM

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