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

Install the CData API Driver for ADO.NET

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

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

Create a Omnisend-Connected Blazor App

Start by creating a Blazor project that references the CData API Driver for ADO.NET

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

SELECT Omnisend Data from the Blazor App

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

   Start by setting the Profile connection property to the location of the Omnisend Profile on disk (e.g. C:\profiles\Omnisend.apip). Next, set the ProfileSettings connection property to the connection string for Omnisend (see below).

   Omnisend API Profile Settings

   Navigate to your Omnisend account integrations at https://app.omnisend.com/#/my-account/integrations/api-keys to generate an API key.

   For example: Profile=C:\profiles\Omnisend.apip;ProfileSettings='APIKey=your_api_key';

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

    @page "/"
    @using System.Data;
    @using System.Data.CData.API;
    
    <h1>Hello, world!</h1>
    
    Welcome to your Data app.
    
    <div class="row">
    <div class="col-12">
    
    @using (APIConnection connection = new APIConnection(
    "Profile=C:\profiles\Omnisend.apip;ProfileSettings='APIKey=your_api_key';"))
    {
    var sql = "SELECT BatchId, Method FROM Batches WHERE Status = 'completed'";
    var results = new DataTable();
    
    APIDataAdapter dataAdapter = new APIDataAdapter(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 Omnisend data as an HTML table in the Blazor app. 👁 Query Omnisend from Blazor app.
   

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