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

Install the CData ADO.NET Provider for Amazon DynamoDB

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

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

Create a Amazon DynamoDB-Connected Blazor App

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

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

SELECT Amazon DynamoDB Data from the Blazor App

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

   The connection to Amazon DynamoDB is made using your AccessKey, SecretKey, and optionally your Domain and Region. Your AccessKey and SecretKey can be obtained on the security credentials page for your Amazon Web Services account. Your Region will be displayed in the upper left-hand corner when you are logged into DynamoDB.

   For example: Access Key=xxx;Secret Key=xxx;Domain=amazonaws.com;Region=OREGON;

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

    @page "/"
    @using System.Data;
    @using System.Data.CData.AmazonDynamoDB;
    
    <h1>Hello, world!</h1>
    
    Welcome to your Data app.
    
    <div class="row">
    <div class="col-12">
    
    @using (AmazonDynamoDBConnection connection = new AmazonDynamoDBConnection(
    "Access Key=xxx;Secret Key=xxx;Domain=amazonaws.com;Region=OREGON;"))
    {
    var sql = "SELECT Industry, Revenue FROM Lead";
    var results = new DataTable();
    
    AmazonDynamoDBDataAdapter dataAdapter = new AmazonDynamoDBDataAdapter(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 Amazon DynamoDB data as an HTML table in the Blazor app. 👁 Query Amazon DynamoDB from Blazor app.
   

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