Connect to Oracle HCM Cloud Data from Blazor Apps

Blazor is a framework for developing modern, client-side web UIs using .NET technology. Instead of coding in JavaScript, developers can use the familiar C# language and .NET libraries to build app UIs.

The CData ADO.NET Provider for Oracle HCM Cloud can be used with standard ADO.NET interfaces, such as LINQ and Entity Framework, to interact with live Oracle HCM Cloud data. Since Blazor supports .NET Core, developers can use CData ADO.NET Providers in Blazor apps. In this article, we will guide you to build a simple Blazor app that talks to Oracle HCM Cloud using standard SQL queries.

Install the CData ADO.NET Provider for Oracle HCM Cloud

CData ADO.NET Providers allow users to access Oracle HCM Cloud just like they would access SQL Server, using simple SQL queries.

Install the Oracle HCM Cloud ADO.NET Data Provider from the CData website or from NuGet. Search NuGet for "Oracle HCM Cloud ADO.NET Data Provider."

Create a Oracle HCM Cloud-Connected Blazor App

Start by creating a Blazor project that references the CData ADO.NET Provider for Oracle HCM Cloud

1. Create a Blazor project on Visual Studio.
👁 Create a Blazor app project.

2. From the Solution Explorer, right click Dependencies, then click Add Project Reference.
3. In the Reference Manager, click the Browse button, and choose the .dll file of the installed ADO.NET Provider (e.g. System.Data.CData.OracleHCM.dll, typically located at C:\Program Files\CData\CData ADO.NET Provider for Oracle HCM Cloud\lib etstandard2.0).
👁 Reference ADO.NET for Oracle HCM Cloud .dll in the Blazor app.

SELECT Oracle HCM Cloud Data from the Blazor App

1. Open the Index.razor file from the Project page.
2. In a OracleHCMConnection object, set the connection string:

   Using Basic Authentication

   You must set the following to authenticate to Oracle HCM Cloud:

   • Url: The Url of your account.
   • User: The user of your account.
   • Password: The password of your account.

   For example: Url=https://abc.oraclecloud.com;User=user;Password=password;

3. The code below creates a simple Blazor app for displaying Oracle HCM Cloud data, using standard SQL to query Oracle HCM Cloud just like SQL Server.

    @page "/"
    @using System.Data;
    @using System.Data.CData.OracleHCM;
    
    <h1>Hello, world!</h1>
    
    Welcome to your Data app.
    
    <div class="row">
    <div class="col-12">
    
    @using (OracleHCMConnection connection = new OracleHCMConnection(
    "Url=https://abc.oraclecloud.com;User=user;Password=password;"))
    {
    var sql = "SELECT SiteId, SiteName FROM RecruitingCESites WHERE Language = 'English'";
    var results = new DataTable();
    
    OracleHCMDataAdapter dataAdapter = new OracleHCMDataAdapter(sql, connection);
    dataAdapter.Fill(results);
    
    <table class="table table-bordered">
    <thead class="thead-light">
    <tr>
    @foreach (DataColumn item in results.Rows[0].Table.Columns)
    {
    <th scope="col">@item.ColumnName</th>
    }
    </tr>
    </thead>
    <tbody>
    @foreach (DataRow row in results.Rows)
    {
    <tr>
    @foreach (var column in row.ItemArray)
    {
    <td>@column.ToString()</td>
    }
    </tr>
    }
    </tbody>
    </table>
    }
    </div>
    </div>
    

4. Rebuild and run the project. The ADO.NET Provider renders Oracle HCM Cloud data as an HTML table in the Blazor app. 👁 Query Oracle HCM Cloud from Blazor app.
   

   At this point, you have a Oracle HCM Cloud-connected Blazor app, capable of working with live Oracle HCM Cloud data just like you would work with a SQL Server instance. Download a free, 30-day trial and start working with live Oracle HCM Cloud data in your Blazor apps today.