Connect to Vercel 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 Vercel 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 Vercel using standard SQL queries.

Install the CData API Driver for ADO.NET

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

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

Create a Vercel-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 Vercel .dll in the Blazor app.

SELECT Vercel Data from the Blazor App

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

   Using API Key Authentication

   Vercel uses Bearer token authentication. You can use either a personal access token or an OAuth access token as the API key.

   To obtain a personal access token:

   1. Log into your Vercel account at https://vercel.com/
   2. Navigate to Account Settings > Tokens.
   3. Click Create Token, enter a name and expiration, and click Create.
   4. Copy the generated token (it will only be shown once).

   After obtaining your token, set the following connection properties:

   • AuthScheme: Set this to APIKey.
   • APIKey: Set this to your Vercel personal access token or OAuth access token.

   Example Connection String

   Profile=C:\profiles\Vercel.apip;AuthScheme=APIKey;APIKey=your_access_token;
   

   Working with Teams

   Many Vercel resources are scoped to a team. To scope all requests to a specific team, set the TeamId connection property to your team's ID. You can find your team ID by querying the Teams table or from the Vercel dashboard. Alternatively, you can specify TeamId in your SQL queries using the WHERE clause where supported.

   Connecting to Vercel

   Once the authentication is configured, you can connect to Vercel and query data from any of the available tables such as Projects, Deployments, Teams, and Domains.

   For example: Profile=C:\profiles\Vercel.apip;AuthScheme=APIKey;APIKey=your_access_token;

3. The code below creates a simple Blazor app for displaying Vercel data, using standard SQL to query Vercel 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\Vercel.apip;AuthScheme=APIKey;APIKey=your_access_token;"))
    {
    var sql = "SELECT , FROM User WHERE = ''";
    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 Vercel data as an HTML table in the Blazor app. 👁 Query Vercel from Blazor app.
   

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