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

Install the CData ADO.NET Provider for LinkedIn

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

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

Create a LinkedIn-Connected Blazor App

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

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

SELECT LinkedIn Data from the Blazor App

1. Open the Index.razor file from the Project page.
2. In a LinkedInConnection object, set the connection string: LinkedIn uses the OAuth 2 authentication standard. Obtain the OAuthClientId and OAuthClientSecret by registering an app with LinkedIn. For more information refer to our authentication guide.

   For example: OAuthClientId=MyOAuthClientId;OAuthClientSecret=MyOAuthClientSecret;CallbackURL=http://localhost:portNumber;CompanyId=XXXXXXX;InitiateOAuth=GETANDREFRESH;

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

    @page "/"
    @using System.Data;
    @using System.Data.CData.LinkedIn;
    
    <h1>Hello, world!</h1>
    
    Welcome to your Data app.
    
    <div class="row">
    <div class="col-12">
    
    @using (LinkedInConnection connection = new LinkedInConnection(
    "OAuthClientId=MyOAuthClientId;OAuthClientSecret=MyOAuthClientSecret;CallbackURL=http://localhost:portNumber;CompanyId=XXXXXXX;InitiateOAuth=GETANDREFRESH;"))
    {
    var sql = "SELECT VisibilityCode, Comment FROM CompanyStatusUpdates";
    var results = new DataTable();
    
    LinkedInDataAdapter dataAdapter = new LinkedInDataAdapter(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 LinkedIn data as an HTML table in the Blazor app. 👁 Query LinkedIn from Blazor app.
   

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