Practice Questions for Exam 70-536 (MCTS - Microsoft Certified Technology Specialist)

QUESTIONS Technology Focus: Developing applications that use system types and collections


1. You are developing a text processing application by using the .NET Framework. You write the following code to iterate over a collection of strings and populate a ListBox control with the values it contains (line numbers are for reference only). The GetStrings function returns an array of strings.

C# 01: StringCollection myStrCol = new StringCollection(); 02: myStrCol.AddRange(GetStrings()); 03: StringEnumerator myEnumerator = myStrCol.GetEnumerator(); Visual Basic 01: Dim myStrCol As StringCollection = New StringCollection() 02: myStrCol.AddRange(GetStrings()) 03: Dim myEnumerator As StringEnumerator = myStrCol.GetEnumerator() You need to add code to populate the ListBox control. What code should you add?   Option A C# while (myEnumerator.MoveNext()) lstStrings.Items.Add(myEnumerator.Current); Visual Basic While (myEnumerator.MoveNext()) lstStrings.Items.Add(myEnumerator.Current) End While

Option B C# do { lstStrings.items.Add(myEnumerator.Current) } while (myEnumerator.MoveNext()) Visual Basic Do lstStrings.items.Add(myEnumerator.Current) Loop While (myEnumerator.MoveNext())

Option C C# myEnumerator.Reset(); do { lstStrings.items.Add(myEnumerator.Current) } while (myEnumerator.MoveNext()) Visual Basic myEnumerator.Reset() Do lstStrings.items.Add(myEnumerator.Current) Loop While (myEnumerator.MoveNext())

Option D C# do { lstStrings.items.Add(myEnumerator.Current) myEnumerator.Reset(); } while (myEnumerator.MoveNext()) Visual Basic myEnumerator.Reset() Do lstStrings.items.Add(myEnumerator.Current) Loop Until (myEnumerator.MoveNext())

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