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

Install the CData ADO.NET Provider for Suadeo

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

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

Create a Suadeo-Connected Blazor App

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

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.Suadeo.dll, typically located at C:\Program Files\CData\CData ADO.NET Provider for Suadeo\lib etstandard2.0).

SELECT Suadeo Data from the Blazor App

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

   The driver uses the OAuth 2.0 Resource Owner Password Credentials (ROPC) grant to authenticate to Suadeo. Authentication occurs directly using your credentials; there is no browser-based authorization flow or refresh token.

   Set the following connection properties:

   • URL: The base URL of your Suadeo instance.
   • User: Your Suadeo username.
   • Password: Your Suadeo password.
   • AuthenticationName: The name identifier for the authentication configuration in your Suadeo instance. Different authentication names can be configured for different environments or use cases.

   When you connect, the driver sends your credentials to the Suadeo OAuth token endpoint, receives an access token, and uses it for all subsequent requests. A new access token is obtained automatically when needed during the session.

   For example: URL=https://mysuadeoinstance;User=username;Password=password;AuthenticationName=your_auth_name;

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

         @page "/"
         @using System.Data;
         @using System.Data.CData.Suadeo;
         
         <h1>Hello, world!</h1>
         
         Welcome to your Data app.
         
         <div class="row">
             <div class="col-12">
         
                 @using (SuadeoConnection connection = new SuadeoConnection(
                   "URL=https://mysuadeoinstance;User=username;Password=password;AuthenticationName=your_auth_name;"))
                 {
                     var sql = "SELECT Id, Name FROM Customers WHERE Status = 'Active'";
                     var results = new DataTable();
         
                     SuadeoDataAdapter dataAdapter = new SuadeoDataAdapter(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 Suadeo data as an HTML table in the Blazor app.

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