Connect to Phoenix 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 Phoenix can be used with standard ADO.NET interfaces, such as LINQ and Entity Framework, to interact with live Phoenix 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 Phoenix using standard SQL queries.

Install the CData ADO.NET Provider for Phoenix

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

Install the Phoenix ADO.NET Data Provider from the CData website or from NuGet. Search NuGet for "Phoenix ADO.NET Data Provider."

Create a Phoenix-Connected Blazor App

Start by creating a Blazor project that references the CData ADO.NET Provider for Phoenix

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.ApachePhoenix.dll, typically located at C:\Program Files\CData\CData ADO.NET Provider for Phoenix\lib etstandard2.0).
👁 Reference ADO.NET for Phoenix .dll in the Blazor app.

SELECT Phoenix Data from the Blazor App

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

   Connect to Apache Phoenix via the Phoenix Query Server. Set the Server and Port (if different from the default port) properties to connect to Apache Phoenix. The Server property will typically be the host name or IP address of the server hosting Apache Phoenix.

   Authenticating to Apache Phoenix

   By default, no authentication will be used (plain). If authentication is configured for your server, set AuthScheme to NEGOTIATE and set the User and Password properties (if necessary) to authenticate through Kerberos.

   For example: Server=localhost;Port=8765;

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

    @page "/"
    @using System.Data;
    @using System.Data.CData.ApachePhoenix;
    
    <h1>Hello, world!</h1>
    
    Welcome to your Data app.
    
    <div class="row">
    <div class="col-12">
    
    @using (ApachePhoenixConnection connection = new ApachePhoenixConnection(
    "Server=localhost;Port=8765;"))
    {
    var sql = "SELECT Id, Column1 FROM MyTable WHERE Id = '123456'";
    var results = new DataTable();
    
    ApachePhoenixDataAdapter dataAdapter = new ApachePhoenixDataAdapter(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 Phoenix data as an HTML table in the Blazor app. 👁 Query Phoenix from Blazor app.
   

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