When a new session is approved and a time slot is chosen, this will add a new calendar entry. You can then imagine a series of possible workflows that may trigger additional actions that are common with SharePoint. Thus, LightSwitch apps allow you to create touch-enabled experiences that take advantage of business data and processes that are already running in SharePoint in your business.
This adds the appropriate SharePoint references to your project. You can also choose a high-trust configuration if you have that set up on-premises, as shown in Figure 5. To get started developing SharePoint apps quickly, you can sign up for a free trial of the Office developer subscription at dev.
MSDN subscribers can also sign up for a free year through their subscription benefits site. This allows you to manipulate list data directly through the LightSwitch data context. This means you can create screens directly against SharePoint list data that you already have set up, and LightSwitch will handle the authentication and data operations automatically.
For example, in the Visual Studio Live! After indicating the SharePoint site address and selecting to automatically choose the user identity, the SharePoint lists are displayed. The site being used already contains a calendar called ConferenceSchedule. When this is brought into the data model you can set up a virtual relationship to the session table data. Simply click the Relationship button at the top of the data designer and define a One-to-Zero-or-one relationship see Figure 6.
Now you can create a new screen that allows staff to enter new sessions. You could include the ConferenceSchedule data directly on the screen, but in this case some server code will be written so it happens transparently in the background.
There are many hooks on the server that allow you to control business logic and data processing this way. This shows that the SharePoint user credentials flow through the LightSwitch app automatically. You can manipulate not only lists this way but also access other SharePoint assets. For example, if you wanted to create a general app that you could sell in the SharePoint store, you might need to deploy and manipulate SharePoint lists in a more generic way.
You can add a variety of SharePoint-specific items to your app this way that will get deployed when you package your app. Then you can use CSOM to manipulate these items in code. For example, you can add a custom list to your project and then interact with that list via CSOM. LightSwitch exposes a SharePoint object on the Application object that you can use to get at the host and app webs.
For example, we added a custom list to the VSLive. We can tap into the save pipeline again and use the list via CSOM. First, import the Microsoft. Client namespace, and then you can write the code shown in Figure 10 Visual Basic. NET or Figure 11 C. When you install a SharePoint app, a manifest is installed that has information on where your app runs.
As part of the new SharePoint app model, any apps that contain server-side code—which all LightSwitch apps do—must run on a separate server outside of SharePoint. This isolation provides better stability to the SharePoint farm. LightSwitch supports two types of SharePoint deployment: autohosted and provider-hosted.
You need to consider these options when building your app because they might directly affect the architecture of your data. With autohosted apps, the Web site and database are provisioned automatically into Windows Azure each time the app is installed. This is a quick and easy type of deployment. However, if your app is uninstalled, then everything is deleted, even the data. Provider-hosted apps give you the flexibility of hosting the Web app and database wherever you want.
LightSwitch provides row-level filtering mechanisms in the query pipeline to help build multi-tenant apps. You also need to manage availability—if your server goes down, all your SharePoint apps stop working.
You also need to specify how you want your app to authenticate. The Single and the SingleOrDefault queries are composed on the All query, so securing the All query also secures these queries if no specific permissions are specified for the derived query.
However, if you like, you can specify permissions on the derived query that are less restrictive than those on the composing query. Also, the CanRead method on the entity set will be applied before CanExecute for any queries of that type. Figure 5 Query Composition on the Employee Entity. If you need to protect data from read access through relationships, the CanRead method on the entity needs to require the correct level of permission.
Figure 6 HR Application Model. You need to be aware that queries can be used to infer data when the entities are not secured. The LightSwitch presentation tier allows all this flexibility.
It should be clearly understood that providing logic on the screen to hide, show or control the editable state of data does not protect data from user access ; it only controls how the data is displayed.
The storage tier is where your data is stored in a database. You can control access to the data in the storage tier by providing a database login with the minimum necessary privileges on the database. The application uses this login to connect to the database and carry out the necessary operations. All connectivity to the data is done via the middle tier, and end users never have direct access to the data or connection string in a three-tier deployment. This configuration gives the user of the client access to the web.
With the connection string, the user can gain direct access to the database and bypass any access-control logic on the middle tier. Otherwise, a three-tier deployment is necessary to secure the application appropriately.
When deploying a LightSwitch application for the first time, you need to create a LightSwitch administrative user. Initially, this is the only user who will have administrator permissions. This user will then be used to configure roles and users within the client application as discussed earlier. Note that this user will be an administrator of your LightSwitch application, but need not be a Windows administrator.
A command-line utility is also available to create a new administrative user outside of the deployment process. You can find this utility, Microsoft. HTTP specifies that data be sent in clear text, which means that a network eavesdropper could monitor the data the clients and servers exchange. However, regardless of authentication mode, business data transferred between client and server is still subject to eavesdropping unless HTTPS is employed.
The certificate serves two purposes. Second, the server certificate contains the secret key information used to encrypt any data sent to the client. You can purchase a certificate from a number of providers, such as verisign. For LightSwitch Web applications, this should work correctly. Silverlight will not allow desktop applications to come from untrusted server certificates. An untrusted certificate will result in an application that appears to install successfully but will fail immediately upon launch.
Server administrators should configure the Web server to enable HTTPS, and select a certificate in the normal fashion. But note that, as already mentioned, any clients that connect via HTTP are not protecting user password information or sensitive business data.
This setting is in the web. Thus you can create an application pool that hosts a Web application or a set of services that runs under a specific Windows identity and allow access only to the resources that identity needs to run the application. In the case of a LightSwitch application, that additional resource will be the database.
By default, the deployment wizard publishes the application under the ASP. NET 4 application pool that runs under a machine account identity. NET v4. There are a couple of options here. However, when Windows authentication is preferred to connect to the database, a separate application pool is necessary so it can be configured to run under a least-privileged Windows user account.
This account must also be granted appropriate access to the application database. All LightSwitch applications that are hosted in Azure are publicly accessible. Note that the March Update to Visual Studio caused, what seems like, breaking changes to the user management side of this tutorial.
As noted in the title, this tutorial will show you how to setup a core LightSwitch project. Not just any LightSwitch project, but one that will allow User Management natively vs. I know that this is a huge tutorial, again. I did try to make it a bit more manageable by breaking it up into pages vs. I encourage you to go through the tutorial at least read it rather than just downloading and running the code, there are some items that you should understand in order to have a successful deployment.
Tutorial code can be downloaded from github at LsCoreProject. Any update on when the blog posts will be updated for user management after the March update? Thanks for sharing your thoughts. I really appreciate your efforts and I am waiting for your further write ups thanks once again. I found your blogs to very good. In your project. I am trying to do two things: 1. Move all the databases into my own. How do I move the user, permission tables etc..
This a newbie question but where is the database stored for these security tables. I want to add more fields to the registration screen. I have modify the createwizard in the resgistration page. User table is part of ASP. NET actually. NET tables if you like. Database is actually the SQL Server that you use for your application. You can write additional code in the code behind file or in web. Is there any way to make use of menus and menu tiles under windows authentication?
Would be cool to have externals coming in under forms authentication and internal clients come in under windows authentication.
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