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Hi! My name is Jay Schmelzer and I’m the Director of Program Management for the Visual Studio BizApps team. My team delivers the Visual Studio tooling that enables developers to target the Office, SharePoint and Windows Azure platforms. With the release of the new Office, it’s an exciting time for us because the new Cloud App Model lets developers use all three of these technologies together to create great apps. We’ve been working closely with these teams over the last year to deliver a great developer experience for building apps in the cloud using Visual Studio, which I’ll walk you through in this blog post.
Before we get started building an app, I’d like to talk about the key considerations for creating tools for a new platform and how they apply for Office and SharePoint development:
Make it easy to get started – One of the best ways for developers to learn a new platform is to start with a small project, learn how it works and then iterate from there to explore the possibilities. We also know how important it for you to get started with the first project quickly and without any obstacles. With our Visual Studio development experience, we’ve made getting started with app development quick and straightforward.
Learn from the previous models – With a new app model there is an opportunity for us to make significant improvements in the platforms and the tools that might not have been possible before. For SharePoint developers, you’ll be pleased to see that we’ve enabled development against a remote site so that you no longer need to have SharePoint installed on the local box.
Help developers explore the platform – Many developers use features in Visual Studio such as IntelliSense, debuggers, and integrated samples to learn the platform. With the new Cloud App Model, we’ve made sure that these features are fully functional in the first preview.
Provide a great end-to-end development experience – Visual Studio has dozens of features that combine to deliver a powerful development experience. When working with a new platform, we look across these features to ensure that they provide first-class support for new platforms. One of the great things about the new Cloud App Model is that it is based on web technologies, which means that many of the features that were developed for targeting the web now also apply to Office and SharePoint development.
Now that we’ve talked about how we approach supporting a new platform, let’s walk through building an app for SharePoint that will be hosted in Office 365 and Windows Azure Web Sites.
As with any new project, the first task is to make sure that your tools and environment are ready for development. We’ve streamlined the process so that its just three steps to get up and running:
If you’ve developed for previous versions of SharePoint, you are probably familiar with the strict machine requirements. If you’re developing for a remote SharePoint site, these requirements are eased considerably such that you can use any machine that supports Visual Studio 2012, whether it’s a 32-bit Windows 8 machine or a 64-bit version of Windows Server.
Now that we have our environment configured, let’s get started by creating a new project in Visual Studio. When you open the New Project dialog box, notice that it’s updated to combine the Office and SharePoint templates in a single convenient location. To create your app, choose the “App for SharePoint 2013” template, and give it an appropriate name.
In the wizard that pops up, you can configure common properties for your app. The second option allows you to specify which SharePoint server you want to use for debugging. If you are developing for your Office 365 Developer Site, you should enter the full URL here. Click the Validate button to ensure that you have the correct URL and that you are properly authenticated on the site. The final option in the wizard allows you to choose the shape of your app and where it gets hosted.
In this example, we’ll choose Autohosted because it’s the easiest way to understand the full capabilities of the Cloud App Model. Click Finish to close the wizard.
Visual Studio has now generated two projects that together constitute the key parts of your app. The first project “MyAutohostedApp” or the app project contains all the artifacts that will be deployed to SharePoint, such as lists, content types, workflows, and client web parts. There are two artifacts in the project by default, an icon and the app manifest. When you open the manifest, you are presented with a guided experience where you can describe how your app should appear in the SharePoint site and declare any permissions or features that are required for the app to function properly.
The second project in the solution “MyAutohostedAppWeb” or the web project contains the artifacts that will be deployed to Windows Azure Web Sites. The template provides you with a basic ASP.NET web project that contains a single page that displays the title of the Developer Site. Although the project itself is quite simple, it actually exposes several powerful concepts. The first concept is that the web project can access SharePoint data via OAuth even though it is hosted on a different server. This enables you to write rich web projects that work with SharePoint without having to worry about significantly impacting the performance of the SharePoint site. The template includes a TokenHelper.cs file which contains common functions for working with the context tokens coming from SharePoint. Another powerful concept is that this is a standard web project that has little code that is specific to SharePoint. This enables you to bring your existing web projects and expose them to your users as apps for SharePoint.
Now that I’ve described the key components of the app, let’s debug it to see how it works:
Your breakpoint gets hit, and you can now step line-by-line through the code as it is executed, and you get the same debugging experience that you expect when doing web development. The magic that enables this experience is that for debug sessions, your web project isn’t being hosted in the cloud. Rather, if you inspect the URL in the browser, you will notice that it is running against your localhost and is running on your box using Internet Information Services (IIS) Express.
In most cases, debugging against your local environment is all that is required. But there are cases when you might want to test your app running in a more realistic environment, where the web project is hosted in Windows Azure Web Sites. For autohosted apps, we’ve provided the Deploy command on the context menu for the app project as a convenient way to run your app in Windows Azure Web Sites.
In the previous example, you saw the possibilities of developing an app for SharePoint in the cloud. Developers also have similar options for hosting their apps for Office in the cloud. Windows Azure Web Sites is a great provider for hosting your web project.
Or, you can create a SharePoint-hosted app for Office, where your SharePoint site acts as the provider for hosting your web content. If you want your app for Office to be available as part of a document library on a SharePoint site, you can use Visual Studio to create an Office-enabled app for SharePoint that is autohosted as well.
Now that you’ve seen the walkthrough for creating an app in the cloud using Visual Studio, I’m certain that you’ll want to start exploring more complex apps and the possibilities of the new app model. One great way to explore is using our new samples experience in Visual Studio 2012.
I want to make sure that you have the best developer experience possible for Office and SharePoint. So if you have questions or comments, we’d like to hear from you!