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Working with the application code

From: Visual Studio 2010 Essential Training

Video: Working with the application code

It doesn't matter how good the UI designer tools are inside Visual Studio. They can't do everything for you. At some point, we must write some code. I'm going to write some code in this project called InfoReaderV3, and I'm going to double-click on this MainWindow.xaml file. So let's take a minute to look around our UI. I have a number of elements in here from the previous movie, and I'm going to work with these two buttons here: this Search Bing button and this Get RSS button. So the idea is you're going to type some text in the Search Term textbox, and this textbook has a name; it's called searchText.

Working with the application code

It doesn't matter how good the UI designer tools are inside Visual Studio. They can't do everything for you. At some point, we must write some code. I'm going to write some code in this project called InfoReaderV3, and I'm going to double-click on this MainWindow.xaml file. So let's take a minute to look around our UI. I have a number of elements in here from the previous movie, and I'm going to work with these two buttons here: this Search Bing button and this Get RSS button. So the idea is you're going to type some text in the Search Term textbox, and this textbook has a name; it's called searchText.

Names are important because in order to talk to them in your code, they have to have an identifying name. The user's going to type something in this text box. They'll click on the Search Bing button. Now, as you can see, this button does not have a name, so I need to provide it a name. And then I'll take the results from the Bing web site, and I'll put it done here in this control, which is named browser; it's a web browser control. So before I continue, I would like to name both these buttons. I will click on the Search Bing button and then go over to the Properties window and type in a new name up here at the top.

I'm going to call this one searchAsRSSButton. Now, by naming this, I'll also get more readable event procedure names when I'm ready to write my code. So, now I'm going to go to this button. I'll show you several ways to add code to your project. I'm going to double-click on the Search Bing button, and Visual Studio will switch me over to the Code window, and it automatically stubs in a function with the name of my button and then _Click. The other way to stub in code--I'll switch back, I just did a Ctrl+Tab to switch back to the other item-- I'll click on this RSS button, and instead of double-clicking here, I can go over to the Properties window and click the Events tab, and then I can find the event I want--in this case the Click event--and double-click here, or I can type my own name in, if I'd rather.

I think I'll just double-click on this one to stub the code in here too. Now I have these two buttons. I'm going to write one more procedure, my own custom procedure, which I'm going to call from both these buttons. It's going to be a private function. It's going to return a void value. It's going to be called SendToBing(). I need the two parentheses to signify that it's a method. Then I move down to the next line, and I type the two curly braces, which signify the section where I write my code inside the function. I'm going to pass in a parameter from both of these functions.

The idea is if you click on the searchBingButton, then I'm going to pass in a false, because I don't want the data returned as an RSS feed. So I'm going to create a parameter down here called searchAsRSS, and then up here, I will call that function. The nice thing about the IntelliSense Engine in Visual Studio is that it knows that I've just written that function, and it shows me in my IntelliSense list. I'm going to click the down arrow on my keyboard and then press the Tab key to have it finish typing, then an open parenthesis, the word "false", and then to end the line of code in C# you use a semicolon.

I'm now going to copy this, right-click and choose Copy, and then I'm going to come down here and do a Ctrl+V to paste, and then I need to change this to true. Let's review what I did. I wrote two procedures using the Visual Studio "auto stubbing in of the code" future. That's not the official name, but I just double-clicked on the button, and it stubbed in the code. Then I wrote my own custom function down here, SendToBing, and then I'm calling that custom function when I click on the two buttons. Now, you have the basic infrastructure written. In the next movie, I'll show you how to test this code and also how to retrieve information from the Bing search engine.

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This video is part of

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

86 video lessons · 30496 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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