Build MVC Applications with Connectivity to IBM Cloud Data Engine Data



This article shows how to use only the Entity Framework and the CData ADO.NET provider to access IBM Cloud Data Engine from an ASP.NET MVC application.

In this article, we will guide you through the process of utilizing wizards within Visual Studio to seamlessly integrate the CData ADO.NET Provider for IBM Cloud Data Engine into a basic MVC (Model, View, Controller) project.

Create the Entity Framework Model

Follow the steps below to save connection properties and map tables to entities in the data model.

  1. Create a new MVC project in Visual Studio. In this example, the project name is MvcIBMCloudDataEngineApp.
  2. If you are using Entity Framework 6, you will need to take the preliminary step of registering the IBM Cloud Data Engine Entity Framework provider for your project. See the "LINQ and Entity Framework" chapter in the help documentation for a guide.

    Note that MVC 3 scaffolding and MVC 4 scaffolding do not support Entity Framework 6. You can use your scaffolding with Entity Framework 6 by upgrading to the latest version of MVC.

  3. To add the .edmx file from the designer, right-click your Models folder and click Add New Item. Select ADO.NET Entity Data Model, name the model, and click Add. In this example, the name of the model is IBMCloudDataEngineModel.
  4. In the Entity Data Model wizard, select the option 'EF Designer from database'. The Entity Data Model wizard is displayed.
  5. Click New Connection. Select CData IBM Cloud Data Engine Data Source in the dialog that is displayed.
  6. Specify the required connection string properties.

    IBM Cloud Data Engine uses the OAuth and HMAC authentication standards. See the "Getting Started" chapter of the help documentation for a guide to using OAuth.

    A typical connection string is below:

    Api Key=MyAPIKey;Instance CRN=myInstanceCRN;Region=myRegion;Schema=mySchema;OAuth Client Id=myOAuthClientId;OAuth Client Secret=myOAuthClientSecret;InitiateOAuth=GETANDREFRESH
  7. Name the connection and select whether to include sensitive information, such as connection credentials, in the connection string. For simplicity, this example saves sensitive information in Web.config. The connection settings are saved as IBMCloudDataEngineEntities.

  8. Select the tables and views you need. In this example, Jobs is imported. Also, the option to pluralize object names is deselected in this example. Click Finish to create the .edmx file.
  9. Build your project to complete this step.

Scaffold the Controller and Views

Once you've established the model and completed the project build, you can employ ASP.NET Scaffolding wizards to generate both the controller and the views.

  1. In Solution Explorer, right-click the controllers folder and click Add -> Controller. Select MVC 5 Controller with views, using Entity Framework.
  2. In the Add Controller dialog that is then displayed, select the following options:

    • Model class: Select a table you imported; for example, Jobs.
    • Data context class: Select your context class.
  3. Leave the default values for the other fields.

You can now access the list of Jobs records at http://MySite/Jobs. Next to each record are links to edit, delete, and see more information. You can also create new Jobs records. With every state change the site picks up any data changes.

Ready to get started?

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Rapidly create and deploy powerful .NET applications that integrate with IBM Cloud Data Engine.