Microsoft visual studio lightswitch business application development download

The familiar drag-and-drop interface makes it a breeze by previewing your changes instantly. Bring your application to live in seconds. No coding required. Read the blog post Michael Washington. NET application from your LightSwitch database in seconds. Deploying to your local IIS is one click away. No vendor lock-in Radzen applications use open-source technologies -.

Desktop and Mobile Radzen applications are responsive out of the box and look great on desktop and mobile devices. Rather than add the same Sort to three queries on three different screens, you can create one query and use it on the three screens.

To create a query, you can right-click on an entity in the Solution Designer and select Add Query. You can name the query and then add filtering, sorting and parameters. The CurrentAppointments query, shown in Figure 13 , returns all appointments, sorted by start time, where the start time is now or later. You can also use it as the basis for additional queries. For example, in the sample application, the CurrentAppointmentsByEmployee query starts with the CurrentAppointments query and then filters the results to return only the appointments for a particular employee.

Access control gives you the ability to control what actions users can take in an application. LightSwitch uses the standard ASP. NET membership and role providers to enable both Windows and Forms authentication. You can authorize users to perform actions by creating permissions, assigning them to users and then checking in code whether the user has a particular permission.

By default, all users can perform all actions in a LightSwitch application. To change this, open the Application Designer and select the Access Control tab, as shown in Figure Then select either Windows or Forms authentication. The built-in SecurityAdministration permission controls whether a user can see the security administration screens at run time.

You use those screens to assign permissions to users and add users if necessary. You can create additional permissions if desired. During development, you can turn off permissions by unchecking Granted for debug. This enables you to test the application using various combinations of permissions. You can check for permissions in code at the entity, screen and query levels.

You can access these from the Write Code button drop-down list in the Data Designer. For example, in the sample application, only administrators can modify employee data.

The following code ensures this:. Screens provide a CanRun method, which runs on the client. The following code ensures that only administrators can open the ManageEmployees screen:.

At run time, the administrator creates roles and assigns users to them. The administrator then assigns permissions to roles. LightSwitch provides three models for deploying applications: two-tier desktop application, three-tier desktop application and three-tier Web application. The application connects to the database directly in typical client-server fashion.

This avoids the need for a Web server. The application has access to local resources, including COM or local files. COM support provides the ability to control applications such as Word or Excel. Note that desktop applications require Windows. A three-tier desktop application runs as an out-of-browser Silverlight application hosted on IIS or Azure.

The UI is browser-based and the middle-tier components run on the host server. To deploy an application, you first publish it. To publish the application, click the Publish button on the Application Type tab in the Application Designer, as shown in Figure You can also specify where this database resides. Wrapping up, the primary audience for LightSwitch is end-user developers. These are people building applications to support business functions.

They may need an application to manage an event, such as a quarterly open house. LightSwitch provides these users with a smooth on-ramp to development. It also provides a simple and flexible deployment model. LightSwitch is the simplest way to build data applications for the desktop and the cloud. The Dalias of the world can build the applications they need and then turn them over to the Antonios of the world to be extended and deployed.

This is his second stint at Microsoft. From to , he was a senior consultant with MCW Technologies, focused on developer training. NET Framework apps. The home screen opens, showing all sessions in a virtualized collection—and this time also showing a blue command bar with a single Filter button.

When this button is clicked, a pop-up is displayed showing the four filter options shown in Figure 3 on a couple different devices. As soon as you actually make a selection, the optional query arguments are automatically updated because of the data binding. This in turn automatically triggers a new HTTP GET operation to be sent to the back-end OData service, which filters the sessions by the correct arguments and returns the result.

In summary, the screen designer does an excellent job of making the correct abstractions so you can focus on setting up a professional HTML app with minimal effort. For example, this app includes a virtualized list that can be filtered, all of which has been set up without having to write a single line of code.

However, LightSwitch offers many scenarios in the screen designer, as well as a large number of extension points, so you can roll up your sleeves and override, alter or append to the HTML, JavaScript and CSS mix that forms an app. As an example, you can add a new query to the app that returns only those sessions in the next Time Slot as a Data Item on the screen, and drag that query onto a new tab in the home screen.

Again, you can keep the List control to show the sessions, but instead of having a one-line summary per session the title , the screen designer is used to nest some row and column layouts and display some additional information about the session, which results in the first on the left-hand side layout in Figure 4.

The logo, in fact, is nothing more than a. LightSwitch ships with a light default and a dark theme, both of which you can further modify using the online JQuery Mobile ThemeRoller. Changing both the logo and the theme results in the center layout in Figure 4. Finally, you can further define the look of your app by using Render or PostRender methods. By selecting any LightSwitch control in the screen designer, a link in the Properties window labeled Edit PostRender Code becomes available.

When you click this link, a JavaScript method stub is generated that will be executed at run time, directly after the LightSwitch JavaScript library has rendered the required HTML elements for the particular control. A possible use of this extension point is to alter the background of each row in the list, depending on the track that the session is a part of, by writing the following code in that method:.

Figure 4 reveals an obvious fault in design: If the track has a bright color associated with it, then because of the contrast between the content and the background, an item can become unreadable. To correct this, add two reusable CSS classes to the user-customization. Customizing the rendering process by writing PostRender methods can be used for a variety of options, ranging from simple CSS tricks such as changing the background color to applying a reusable JQuery UI widget that hides all items in the list but one, turning the list into a dynamic banner or image carousel.

To add a legend of tracks and their color code, add a query on all tracks as a date item to the screen view model and display it as a Tile List a built-in alternative collection control. In the template of each tile, render the color of each track as a simple square, using this JavaScript code:. Besides various visual customizations, LightSwitch also offers numerous code extension points in the ViewModel and Model layers to help you tweak the control flow and business rules of your apps.

This app now has a first tab that features the upcoming sessions in the form of a banner and has a legend of colors per track, along with a second tab with an overview of all the sessions, including an easy-to-use filter. This generates a JavaScript method stub where you can write the following:. The app now has three different perspectives to slice the sessions: see the upcoming sessions in a banner; click on a track to see the list of sessions filtered by that track; or adjust track, time slot, speaker or room on that same filter manually.

One last perspective you can add is an overview of your favorite sessions. To accomplish this, add a simple entity called FavoriteSessions. When the screen to view a particular session is opened, determine if such an entry exists by asynchronously executing a specialized FindFavoriteSessions query on the server and storing the existence of this result in a Boolean screen property called IsFavorite:.

The LightSwitch JavaScript library calls these methods at the appropriate times and makes sure the UI is updated accordingly. Just set a new value for the IsFavorite property from anywhere within the app and the LightSwitch runtime will automatically know to reevaluate these particular CanExecute methods and update the view show or hide the buttons as required.

After adding the list of FavoriteSessions to a new tab on the homepage, the app is ready for packaging and deployment. It turns out that LightSwitch does a great job of keeping a balance between designing the app in a simple but powerful screen designer and the amount of customizability you need to sacrifice for this simplified and speedy development. NET that is robust toward creating enterprise-quality applications that scale and are reliable, that provide good user experience.

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Skip to content. READ MORE Book Summary: In this fully updated second edition, award-winning author Tim Leung explains how to build data-centric business applications for the desktop, cloud, web, and mobile devices in just a few clicks—with no code required—using Visual Studio Lightswitch