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

Install the CData ADO.NET Provider for HBase

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

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

Create a HBase-Connected Blazor App

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

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

SELECT HBase Data from the Blazor App

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

   Set the Port and Server to connect to Apache HBase.

   For example: Server=127.0.0.1;Port=8080;

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

    @page "/"
    @using System.Data;
    @using System.Data.CData.ApacheHBase;
    
    <h1>Hello, world!</h1>
    
    Welcome to your Data app.
    
    <div class="row">
    <div class="col-12">
    
    @using (ApacheHBaseConnection connection = new ApacheHBaseConnection(
    "Server=127.0.0.1;Port=8080;"))
    {
    var sql = "SELECT SUM(CustomerName), Price FROM Customers GROUP BY Price";
    var results = new DataTable();
    
    ApacheHBaseDataAdapter dataAdapter = new ApacheHBaseDataAdapter(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 HBase data as an HTML table in the Blazor app. 👁 Query HBase from Blazor app.
   

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