Microsoft visual studio lightswitch unleashed free ebook

Beginning Visual Studio for Mac. Visual Studio Code Distilled. Visual Basic Unleashed. Learn to build cross-platform mobile apps using the latest features in Xamarin. Forms 4 with the help …. Skip to main content. Start your free trial. Implement features such as screen navigation, data interaction, paging, and Excel export, with absolutely no coding Build simple data-centric applications and add power to them with relationships and details Rapidly create customized queries, filters, sorts, and reports Aggregate data from many locations, including SharePoint, SQL Server, and the cloud Simplify the implementation of application-level data validation Protect your applications with authentication and authorization Fine tune your code for scalability and performance Streamline deployment to local computers, web servers, and the Windows Azure cloud Use.

Table of contents Product information. Exploring the IDE Chapter 3. The Complete Linux Manual May Skip to content Other 0. Implement features such as screen navigation, data interaction, paging, and Excel export, with absolutely no coding Build simple data-centric applications and add power to them with relationships and details Rapidly create customized queries, filters, sorts, and reports Aggregate data from many locations, including SharePoint, SQL Server, and the cloud Simplify the implementation of application-level data validation Protect your applications with authentication and authorization Fine tune your code for scalability and performance Streamline deployment to local computers, web servers, and the Windows Azure cloud Use.

Packed with examples and tips, it shows how to: Build simple data-centric applications, and add power with Relationships and Details screens Implement customized queries, filters, sorts, user controls, and reporting Aggregate data from multiple sources Handle events in code Efficiently debug LightSwitch applications Use authentication to secure LightSwitch applications Write custom.

NET code in Visual Studio. On the right is the screen content tree. You can add data items to the screen as needed. You can rearrange the screen controls as well as modify the screen layout.

For example, you may want the customers list on the left and orders on the right rather than customers on top and orders below. You can also set various properties of controls, such as label text, whether a label appears, horizontal and vertical alignment, height and width. After you create at least one screen, you can press F5 and run the application. You can change this on the Navigation tab of the Application Designer.

LightSwitch applications automatically include an application shell, a navigation menu, a ribbon, a tabbed area for screens and data binding, as shown in Figure 8.

The application also has built-in dirty checking and concurrency handling. The LightSwitch screen templates provide specific functionality. For example, a search screen contains a grid to display items and a button to export those items to Excel.

You can add additional items as needed. To add a button to the grid, use the Command Bar contained in the grid. When you add a button, LightSwitch prompts you for the name of the method that runs when the user clicks the button. You can right-click the button and select Edit Execute Code, and then write the code that executes. Just like entities, screens have a number of events you can handle, as shown in Figure The Run event occurs when a request is made to display a screen.

The Run event handler includes a handled argument. If you set this to true, you can prevent the screen from continuing. The InitializeDataWorkspace event occurs just before the screen data is retrieved. This is a good place for screen initialization code.

The other events are self-explanatory. You might think that events such as Run or Saving are good places to put code that checks whether the user can perform actions such as open the screen or save the data. However, you should put that code in the appropriate Access Control methods, such as CanRun at the screen level or CanUpdate at the entity level. LightSwitch development is designed to be highly iterative. Developers can edit screens at run time while running in Debug Mode by clicking the Design Screen button in the ribbon.

It therefore does not expose XAML at design time. This makes it dramatically easier for users to build applications. You can create composite controls or even entire screens that include custom logic, plus you can easily bind these user controls to screen entities. Another way to add functionality to a LightSwitch application is to use an extension.

There are six types of LightSwitch extensions: controls, screen templates, business types, shells application look and feel , themes colors and brushes for a shell and custom data sources. Extensions are distributed via VSIX packages. If you want to make an extension broadly available, you can upload it to the Visual Studio Gallery.

It will then appear in the Extension Manager within LightSwitch. After installing an extension, you can enable it on the Extensions tab of the Application Designer. The Contoso Construction sample application uses a Bing map control extension to show the location of customers, as shown in Figure All screens are based on queries.

The query for a Detail screen returns one row. The query for a List and Details screen returns one parent row and all of the related child rows. The query for a Search or Editable Grid screen will return all rows by default. The queries support paging by default. To configure the paging, select the query in either the Screen or Query Designer and change the paging-related properties. You can filter the data returned by a screen query that returns a collection of entities.

To do this, click Edit Query in the Screen Designer. In the Query Designer, you can then add Where and Sort clauses. You can also add parameters to queries.