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

Install the CData ADO.NET Provider for Azure Synapse

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

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

Create a Azure Synapse-Connected Blazor App

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

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

SELECT Azure Synapse Data from the Blazor App

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

   Connecting to Azure Synapse

   In addition to providing authentication (see below), set the following properties to connect to a Azure Synapse database:

   • Server: The server running Azure. You can find this by logging into the Azure portal and navigating to Azure Synapse Analytics -> Select your database -> Overview -> Server name.
   • Database: The name of the database, as seen in the Azure portal on the Azure Synapse Analytics page.

   Authenticating to Azure Synapse

   Connect to Azure Synapse using the following properties:

   • User: The username provided for authentication with Azure.
   • Password: The password associated with the authenticating user.

   For example: User=myuser;Password=mypassword;Server=localhost;Database=Northwind;

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

    @page "/"
    @using System.Data;
    @using System.Data.CData.AzureSynapse;
    
    <h1>Hello, world!</h1>
    
    Welcome to your Data app.
    
    <div class="row">
    <div class="col-12">
    
    @using (AzureSynapseConnection connection = new AzureSynapseConnection(
    "User=myuser;Password=mypassword;Server=localhost;Database=Northwind;"))
    {
    var sql = "SELECT Id, ProductName FROM Products WHERE ProductName = 'Konbu'";
    var results = new DataTable();
    
    AzureSynapseDataAdapter dataAdapter = new AzureSynapseDataAdapter(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 Azure Synapse data as an HTML table in the Blazor app. 👁 Query Azure Synapse from Blazor app.
   

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