Adding More Methods

Welcome back. 0:00 How did you do? 0:01 Don't worry if you weren't able to complete every part of the challenge, 0:02 it's normal to struggle when you're learning something new. 0:06 Let's walk through my solution. 0:09 In the Album.cs file, I added a method to the Album class. 0:10 Remember that a methods return type is the data type of the value that will be 0:16 returned from the method. 0:20 So I use string for the method's return type, 0:21 then I name my method GetDisplayText. 0:26 After the method name, I added a pair of parentheses. 0:29 If this method needed parameters I'd define them here between the parentheses. 0:33 But this method won't define any parameters. 0:37 So I'll leave this part as it is. 0:40 Then I added a set of curly braces to define the code block for my method body. 0:43 In order for the method to be accessible from the program.cs file main method, 0:48 we need to include the public access modifier right before the return type. 0:53 To return a string value from our method, 1:00 we use the return keyword followed by a string value. 1:02 For my string value, 1:08 I'll use string concatenation to combine string literals and field values. 1:09 I'll do the same thing that I was doing in the program.cs main method. 1:14 So Album: " + Title. 1:18 Then another string literal contain the word by, then the artist field value. 1:25 Cmd+S or Ctrl+S to save the file and open program.cs. 1:32 Here, I did a little bit of clean up and 1:39 removed all of the code that didn't pertain to the album media type 1:41 since that's the one media type that we're working with in this practice session. 1:44 I also renamed the album variable to album 1. 1:53 And added two more album class instances. 1:59 var album2 = new Album. 2:03 And for the title, how about The Wall? 2:07 And for the artist, Pink Floyd? 2:10 Then var album3. 2:15 New album. 2:18 How about Pet Sounds by The Beach Boys. 2:21 And to write each album's media type information to the console, 2:29 I passed a call to the album classes, 2:33 get display text method into the console right line method call. 2:35 First, album1. 2:43 So, album1.GetDisplayText then 2:45 repeat that for album2 and album3. 2:50 And finally, I compiled and ran the program. 2:58 Ncs star.cs, in order to include all the cs files 3:04 in our project, then -out colon Program.exe, 3:09 in order to name the exe file then let's also run the program. 3:14 && space mono program.exe. 3:20 And here is the output for all three of my album media types. 3:27 Are you ready for the second challenge? 3:31 When thinking about the behaviors that I wanted my media types to support, 3:33 I remembered that sometimes I let family members and 3:37 friends borrow items from my media library. 3:39 So I thought it'd be helpful to add two methods, loan and return, that can 3:42 be used to track when an item is loaned out to someone and when it's returned. 3:48 The loan method should accept a string of the name of the person who is borrowing 3:54 the item and store the person's name in a new field named, Loanee. 3:58 Use a boolean field, OnLoan, to indicate whether or 4:03 not an item has been loaned out. 4:06 The return method should reset the loan-related 4:09 fields to their default values. 4:12 Null for the Loanee field and False for the OnLoan field. 4:14 Unlike the getDisplayText method, neither of these methods, loan or 4:18 return, will return a value. 4:22 Speaking of the getDisplayText method, 4:25 update it to include the loan related field items if the item is out on loan. 4:28 For example, if an album is currently on loan, it should display the text 4:33 Album:Yellow Submarine by the Beatles, and then in parentheses, 4:37 Currently on loan to Joe Smith, the name of the person who borrowed it. 4:42 And lastly, to test your changes, update the program.cs file to call the loan and 4:47 return methods. 4:52 Be sure to use the get display text method to write the media type information to 4:54 the console after calling the loan and return methods. 4:58 They'll help you to determine if the new methods are working properly. 5:02 And that's the second challenge. 5:05 After the break, I'll show you my solution. 5:08