DEVRY CIS170B WEEK 7 quiz

(TCO 13) Include the _____ namespace in your C# program to enable it to access files and directories.

Student Answer: System.IO

System.Collections.Generic

System

System.Text

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Question 2. Question :

(TCO 13) Before your C# program attempts to open a file, it should first _____.

Student Answer: call File.Open() to make sure the file can be opened

call File.Exists() to make sure the file exists

call File.Create() to create the file

call File.Close() to close the file in case it was already open

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Question 3. Question :

(TCO 13) To make your C# program put a new file called “newFile.txt” in the current directory, write _____.

Student Answer: File.Create(“newFile.txt”);

File.CreateNew(“newFile.txt”);

File myFile = new File(“newFile.txt”);

File myFile = new FileStream(“newFile.txt”);

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Question 4. Question :

(TCO 13) The following C# code will print out _____.

DirectoryInfo dir = new

DirectoryInfo(“.”);

foreach (FileInfo

fil in dir.GetFiles(“*.*”))

Console.WriteLine(fil.Name);

Student Answer: the names of all objects in a program

the names of the methods in a program

the names of all of the variables in a program

the names of all files in the current directory

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Question 5. Question :

The GetCreationTime() method of the File class returns a string containing the date and time a specified file was created.

True False

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Question 6. Question :

The StreamReader and StreamWriter classes simplify the process of reading and writing to text files.

True False

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Question 7. Question :

Because many runtime errors are possible when accessing system resources such as files, it is not important to catch and handle exceptions that may be thrown.

True False

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Question 8. Question :

The Close() method of the SystemWriter class causes any data in the buffer to be written to the file, and releases any resources associated with the file, such as memory.

True False

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