Opening and reading files

1. Opening and reading files Name:

2. Why is it important to read and write files? • Evaluate the importance of it and describe when you would need it

3. Make a new project • 2 buttons – open and write • 1 textbox – with multiline • Efficient and extended: make sure they all have suitable names

4. Make a file in your my documents • Make a text file in your my documents called – test

5. Add this code to write • Dim FILE_NAME As String = "C:\Users\Miles Conway\Documents\test2.txt" • Dim objWriter As New System.IO.StreamWriter(FILE_NAME) • objWriter.WriteLine(TextBox1.Text) • objWriter.Close() • MsgBox("Text written to file") • Extended: use the if statement to check if the file exists

6. Add this code for read • Dim FILE_NAME As String = "C:\Users\Miles Conway\Documents\test2.txt“ • Dim objReader As New System.IO.StreamReader(FILE_NAME) • TextBox1.Text = objReader.ReadToEnd • objReader.Close() • Extended: use the if statement to check if the file exists

7. Evaluation • What is the program doing so far? • How is your efficient is your programming?

8. Task 1 • Make a program where you can add a new high score each time • You should be able to open text file • You should be able to write to the text file • Use IF statements and different text boxes

9. Extended challenge: Task 2 • Make a program that has a list of films and the price of them • The program should let the user enter the quantity • The quantity is multiplied by the price of the film

10. Evaluation of programming • How well did the programming go today? • How can you improve? • Evaluate the importance of reading and writing files