Array and One Dimensional Array Listbox Quiz
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Questions and Answers

What is the primary purpose of an array?

  • To display a collection of items in a tabular form
  • To store a collection of data of different types
  • To enable the user to select items from a list
  • To store a collection of variables of the same type in contiguous memory locations (correct)

    • How can you populate a Listbox control in a program?

  • By creating a multi-dimensional array and displaying it in a tabular form
  • By calling the Button1_Click() event when the user types an entry in the Textbox and presses Enter
  • By using the Listview control to display a collection of items
  • By inserting the actual text being typed in a Textbox and clicking a Save button (correct)

    • What is the key difference between a one-dimensional array and a multi-dimensional array?

  • One-dimensional arrays store homogeneous data, while multi-dimensional arrays store heterogeneous data
  • One-dimensional arrays can only store a single value, while multi-dimensional arrays can store multiple values
  • One-dimensional arrays are used to display a list of items, while multi-dimensional arrays are used to display a tabular form
  • One-dimensional arrays are stored in row-major order, while multi-dimensional arrays are stored in column-major order (correct)

    • What is the purpose of the Listview control in a program?

    <p>To display a collection of items in a tabular form with different views</p> Signup and view all the answers

    Which of the following is a common implementation of an array?

    <p>Storing a collection of variables of the same type in contiguous memory locations</p> Signup and view all the answers

    How can you improve the program to allow the user to add items to the Listbox by pressing Enter?

    <p>By calling the Button1_Click() event when the user types an entry in the Textbox and presses Enter</p> Signup and view all the answers

    What is the purpose of the String.Substring method in C#?

    <p>To retrieve a substring from a string</p> Signup and view all the answers

    Which operation in string manipulation is performed by concatenation?

    <p>Joining two strings together</p> Signup and view all the answers

    In programming, what does the 'Length' statement do when applied to a string?

    <p>Calculates the total number of characters in the string</p> Signup and view all the answers

    What does a one-dimensional array primarily consist of?

    <p>Single line or row of elements</p> Signup and view all the answers

    Which control is commonly used for displaying an array of items in a graphical user interface?

    <p>Listbox control</p> Signup and view all the answers

    What does the 'Substring(Int32, Int32)' method do when applied to a string instance?

    <p>Retrieves a substring from the specified position with a specified length</p> Signup and view all the answers

    How is the string 'Testdata ' modified using the Insert method with startIndex 3 and empty value?

    <p>Tesdata</p> Signup and view all the answers

    Which method is commonly used in C# to insert variables or objects into a string?

    <p>string.Format</p> Signup and view all the answers

    What is used as a placeholder in the string.Format method to indicate where the variable should be inserted?

    <p>{0}</p> Signup and view all the answers

    Which data structure is an array often considered as in programming?

    <p>List</p> Signup and view all the answers

    How do we commonly format strings using placeholders in C#?

    <p>% formatting</p> Signup and view all the answers

    What is the primary benefit of using arrays in programming?

    <p>Sequential storage</p> Signup and view all the answers

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