March 27 - Files Big Idea: I will know how to create

software that can open and save to files Minds On: Learn how to learn Action: File Review Consolidation: Continue or move on?

Learn how to learn What strategies do you use to be

successful in school? How do you learn independently?

What strategies do you use to be successful in school?

Organization

In class/on time

Do your homework

Stay awake

Stay focused

Stay clean

How do you learn independently?

Research

Practice

Trial and error

Have initiative

Read a book

Youtube

Be responsibl

e

Time table plan

File Streams

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T i a   9 2 Cr Lf

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//Example 3 System.IO.FileInfo textFile3 = new

System.IO.FileInfo("wonder.txt"); System.IO.StreamReader readFile; String lineOfText;

try { readFile = new

System.IO.StreamReader(textFile3.FullName); while ((lineOfText = readFile.ReadLine()) != null) { Console.WriteLine(lineOfText); } readFile.Close(); }

catch (Exception e) { Console.WriteLine("File does not exist

or could not be found."); Console.WriteLine(e.Message); }

YOUR TASK Create a console application called u3MMDDReadFileName

that reads and then displays the contents of a file containing instructions for this assignment. Use Notepad to create the file and be sure it is saved as a Text file (TXT). The application will need to include the correct path to the location. Bonus marks if you can figure out how to do it without a path!

AND ANOTHER TASK Create a program called u3MMDDReadNumbersName that

reads a text file that has a number on each line. As each line is read the number should be output and the number should be added to a variable called intTotal. Another variable intNumbOfItems is increased by one. Once the file is finished, then the average is calculated and displayed.

FileInfo dataFile = new FileInfo("scores.dat");

StreamReader readFile; String score; Double avgScore; Double totalScores = 0; Int32 numScores = 0;

try { readFile = new StreamReader(dataFile.FullName); while ((score = readFile.ReadLine()) != null) { numScores += 1; Console.WriteLine(score); totalScores += Double.Parse(score); } avgScore = totalScores / numScores; Console.WriteLine("Average = " + avgScore); readFile.Close(); }

catch(Exception ex){ Console.WriteLine("The following error

occurred: "); Console.WriteLine(ex.Message); }