Connect to Amazon S3 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 S3 can be used with standard ADO.NET interfaces, such as LINQ and Entity Framework, to interact with live Amazon S3 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 S3 using standard SQL queries.

Install the CData ADO.NET Provider for Amazon S3

CData ADO.NET Providers allow users to access Amazon S3 just like they would access SQL Server, using simple SQL queries.

Install the Amazon S3 ADO.NET Data Provider from the CData website or from NuGet. Search NuGet for "Amazon S3 ADO.NET Data Provider."

Create a Amazon S3-Connected Blazor App

Start by creating a Blazor project that references the CData ADO.NET Provider for Amazon S3

1. Create a Blazor project on Visual Studio.
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.AmazonS3.dll, typically located at C:\Program Files\CData\CData ADO.NET Provider for Amazon S3\lib etstandard2.0).

SELECT Amazon S3 Data from the Blazor App

1. Open the Index.razor file from the Project page.
2. In a AmazonS3Connection object, set the connection string:

   To authorize Amazon S3 requests, provide the credentials for an administrator account or for an IAM user with custom permissions. Set AccessKey to the access key Id. Set SecretKey to the secret access key.

   Note: You can connect as the AWS account administrator, but it is recommended to use IAM user credentials to access AWS services.

   For information on obtaining the credentials and other authentication methods, refer to the Getting Started section of the Help documentation.

   For example: AccessKey=a123;SecretKey=s123;

3. The code below creates a simple Blazor app for displaying Amazon S3 data, using standard SQL to query Amazon S3 just like SQL Server.

         @page "/"
         @using System.Data;
         @using System.Data.CData.AmazonS3;
         
         <h1>Hello, world!</h1>
         
         Welcome to your Data app.
         
         <div class="row">
             <div class="col-12">
         
                 @using (AmazonS3Connection connection = new AmazonS3Connection(
                   "AccessKey=a123;SecretKey=s123;"))
                 {
                     var sql = "SELECT Name, OwnerId FROM ObjectsACL WHERE Name = 'TestBucket'";
                     var results = new DataTable();
         
                     AmazonS3DataAdapter dataAdapter = new AmazonS3DataAdapter(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 S3 data as an HTML table in the Blazor app.

   At this point, you have a Amazon S3-connected Blazor app, capable of working with live Amazon S3 data just like you would work with a SQL Server instance. Download a free, 30-day trial and start working with live Amazon S3 data in your Blazor apps today.