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Refactoring VB with CodeRush Xpress

From: Visual Studio 2010 Essential Training

Video: Refactoring VB with CodeRush Xpress

If you are a Visual Basic programmer, you don't have refactoring in Visual Studio by default. There is a free CodeRush Xpress tool, however, that is sanctioned by Microsoft. If you plan on following along with me in these demos, you need to install the Xpress tool. I have included a copy of the installer in the Exercise Files folder, and then the Installers folder. This is the file you want to install, CodeRushXpress. Once you've installed CodeRushXpress, you need to restart Visual Studio. Then the next time you run it, you may need to enable DevExpress. On my machine, I have to go to DevExpress load.

Refactoring VB with CodeRush Xpress

If you are a Visual Basic programmer, you don't have refactoring in Visual Studio by default. There is a free CodeRush Xpress tool, however, that is sanctioned by Microsoft. If you plan on following along with me in these demos, you need to install the Xpress tool. I have included a copy of the installer in the Exercise Files folder, and then the Installers folder. This is the file you want to install, CodeRushXpress. Once you've installed CodeRushXpress, you need to restart Visual Studio. Then the next time you run it, you may need to enable DevExpress. On my machine, I have to go to DevExpress load.

For my first refactoring, I am going to open this Program.vb file, and I am going to do a simple rename refactoring. I am going to click on the letter b, and I am going to invoke the Refactoring menu. It's down here. It has an exclamation on end of the name. That's how we know it's the CodeRush Refactor. The refactoring that I want to do today is Rename Local. I am going to press the Enter key, and notice that there are two blue bounding boxes added to my window: one on line 7 and one on line 12.

Those two variables are now linked, and if I type a new name here at the top, it appears online 12 as well. Later, if I go back and click on this item again, you'll see that the link still exists. I can then choose to rename it. Next, I am going to do an extract method refactor. To do that, I am going to open this file, MathLib.vb. This refactor, I am going to take this small calculation here, and I am going to extract it out into a separate method, because I think I might reuse it later in my application. I am going to select this text and then choose refractoring menu, Refactor!.. > Extract Method.

Now you can see a lot of things happening here. There are some blue arrows pointing to my code and some green arrows pointing to my code. I am going to just hit the Enter key, and then I get this red line that lets me choose where I want to put the new method. I think I want to have the new method go down here on line 12. I will press Enter, and again, you see I get those blue bounding boxes. This time I can type in my new name, "CalcArea". Now I want you to notice one more thing: on line 9 there is a blue triangle up there. That is a marker. It was dropped when I did the refactoring.

Now I can press the Escape key. Keep an eye in line 9 when I press the Escape key, and you'll see that the cursor moves back there. I am pressing it now. It was also a little shrinking blue circle that shows I will move to that point. Next, I would like to refactor this method over in the Book class. I am going to switch to the Book class. I am going to reorder the parameters in this method. I am going to invoke the Refactor key on my keyboard, which is Ctrl+ Backtick character, and then I am going to choose Reorder Parameters from this list, and then press Enter.

Now again, you see there is a blue bounding box, and this time there is an arrow that is pointing to the right. What I can do now is I can press the right and left arrows on my keyboard to move these parameters. I am going to move this parameter over to the next position, and then when I am happy with this, I can press the Enter key. Now of course, I can keep going back and forth. Right now, I am happy with it as a last parameter, so I am going to press the Enter key, And then the Refactoring tool takes me over to my Main() method and shows me that on line 12, I made a call to that function, and it needs to be rewritten.

If I approve this change, I click on the check mark. Then it moves to line 15 and says, "Do you want to change the code here," and I approve that one as well. Up at the top of my Book class, I have an autoimplemented property. There is a refactor that lets me turn this into an implemented property. I'll choose Title and then Ctrl+Backtick. I'll choose to Create Backing Store. Notice the red mark there showing it's going to replace that text. I will press Enter, and you see it's rewritten it to about six lines of code. Later, if I want to switch it back, I could choose this item and then switch it back so it would look like this property down here.

There are lots of other refactorings. Let me show you just one more. I am going to show you the Extract Interface. I will click on Book, choosers Refactor!, choose to extract the interface, and you see that it pull the Interface out, used the code down here to implement the interface, wrote the properties for me, Title, and made sure it says Implements IBook.Title, and it has also got the blue bounding markers, showing that there is a link. So if I want to change the name of the interface to something like IWhatever, it's changing all the linked locations.

So as you see, the Xpress tools take a more dramatic approach to refactoring. If you write C# code, then you'll be happy to know that CodeRush has refactoring for your language too.

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This video is part of

Image for Visual Studio 2010 Essential Training
Visual Studio 2010 Essential Training

86 video lessons · 30619 viewers

Walt Ritscher
Author

 
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  1. 2m 3s
    1. Welcome
      1m 2s
    2. Using the exercise files
      1m 1s
  2. 7m 19s
    1. Understanding the Visual Studio versions
      3m 51s
    2. Setting up your developer computer
      3m 28s
  3. 58m 2s
    1. Creating a Visual Studio project
      4m 58s
    2. Working with Solution Explorer
      6m 32s
    3. Working with big projects
      3m 53s
    4. Taking a tour of the Integrated Developer Environment (IDE)
      8m 36s
    5. Introducing drag-and-drop UI design
      7m 38s
    6. Working with the Properties window
      6m 44s
    7. Looking at Server Explorer
      7m 4s
    8. Exploring the new Help engine
      6m 41s
    9. Setting options for the IDE
      5m 56s
  4. 39m 25s
    1. Creating a simple WPF application
      1m 32s
    2. Building the UI with the editors
      9m 14s
    3. Working with the application code
      3m 37s
    4. Communicating with the web site
      7m 15s
    5. Connecting your data
      8m 4s
    6. Binding to an RSS feed
      5m 4s
    7. Packaging and deploying the application
      4m 39s
  5. 39m 46s
    1. What languages are supported in Visual Studio 2010?
      1m 17s
    2. Exploring basic settings for the Code Editor
      5m 35s
    3. Writing a C# program
      6m 48s
    4. Writing a VB program
      6m 29s
    5. Working with C++
      6m 38s
    6. Working with F Sharp
      6m 9s
    7. Font and color options
      6m 50s
  6. 1h 5m
    1. Formatting your code
      6m 43s
    2. Navigating your code
      7m 44s
    3. Using the Task List
      2m 26s
    4. Commenting your code
      2m 45s
    5. Documenting your code
      8m 26s
    6. Using IntelliSense effectively
      7m 0s
    7. Working with code snippets
      6m 25s
    8. Refactoring your code
      5m 15s
    9. Understanding code generation
      2m 10s
    10. Generating code with T4
      6m 29s
    11. Using the Class View, Class Designer, and Class Diagram tools
      5m 51s
    12. Refactoring VB with CodeRush Xpress
      4m 33s
  7. 1h 11m
    1. Working with project and item templates
      8m 38s
    2. Creating a console application
      7m 5s
    3. Creating a class library
      6m 26s
    4. Creating a web site with ASP.NET
      7m 37s
    5. Creating a rich internet application with Silverlight
      6m 57s
    6. Creating a classic Windows application with Windows Forms
      10m 31s
    7. Creating a dramatic Windows application with Windows Presentation Foundation (WPF)
      4m 41s
    8. Creating a WCF service
      9m 1s
    9. Using an existing WCF service
      6m 38s
    10. Navigation UI designs with the Document Outline view
      3m 41s
  8. 33m 18s
    1. Creating a data project with SQL Project
      6m 24s
    2. Clarifying the confusion on .NET Data
      3m 31s
    3. Using ADO.NET in your application
      6m 50s
    4. Creating typed datasets
      7m 55s
    5. Using the data binding tools
      8m 38s
  9. 30m 13s
    1. Debugging code
      9m 32s
    2. Working with the Watch and other debug windows
      7m 46s
    3. Other debugging techniques
      6m 50s
    4. IntelliTrace historical debugging in Visual Studio Ultimate
      6m 5s
  10. 17m 56s
    1. Understanding Visual Studio editions and test tools
      2m 22s
    2. Verifying your code with unit tests
      8m 58s
    3. Running performance and load tests
      6m 36s
  11. 34m 5s
    1. Building your application
      4m 19s
    2. Customizing the build process with MSBuild
      6m 36s
    3. Setting assembly information
      2m 12s
    4. Deploying a basic Windows application
      2m 19s
    5. Creating an installer with Visual Studio
      7m 39s
    6. Creating a ClickOnce application
      5m 13s
    7. Setting up IIS for deploy
      2m 9s
    8. Deploying a Silverlight or ASP.NET application
      3m 38s
  12. 14m 0s
    1. Understanding source control
      2m 9s
    2. Setting up Team Foundation Server source control
      3m 5s
    3. Using Team Foundation Server source control
      8m 46s
  13. 17m 31s
    1. Understanding the .NET Office integration
      4m 16s
    2. Making a Word 2010 application
      7m 54s
    3. Making an Excel 2010 add-in
      5m 21s
  14. 31m 34s
    1. Understanding the extensibility model in Visual Studio
      2m 17s
    2. Adding external tools to the Tools menu
      4m 42s
    3. Creating macros
      7m 16s
    4. Using the Extension Manager
      5m 1s
    5. Creating an MEF add-in
      7m 9s
    6. Deploying and installing an add-in with VSIX
      5m 9s
  15. 25m 34s
    1. Working with configuration files
      5m 37s
    2. Using the Settings Editor
      7m 30s
    3. Using the Resources Editor
      6m 59s
    4. Localizing your resources
      5m 28s
  16. 1m 17s
    1. Goodbye
      1m 17s

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