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

Install the CData ADO.NET Provider for SingleStore

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

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

Create a SingleStore-Connected Blazor App

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

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

SELECT SingleStore Data from the Blazor App

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

   The following connection properties are required in order to connect to data.

   • Server: The host name or IP of the server hosting the SingleStore database.
   • Port: The port of the server hosting the SingleStore database.
   • Database (Optional): The default database to connect to when connecting to the SingleStore Server. If this is not set, tables from all databases will be returned.

   Connect Using Standard Authentication

   To authenticate using standard authentication, set the following:

   • User: The user which will be used to authenticate with the SingleStore server.
   • Password: The password which will be used to authenticate with the SingleStore server.

   Connect Using Integrated Security

   As an alternative to providing the standard username and password, you can set IntegratedSecurity to True to authenticate trusted users to the server via Windows Authentication.

   Connect Using SSL Authentication

   You can leverage SSL authentication to connect to SingleStore data via a secure session. Configure the following connection properties to connect to data:

   • SSLClientCert: Set this to the name of the certificate store for the client certificate. Used in the case of 2-way SSL, where truststore and keystore are kept on both the client and server machines.
   • SSLClientCertPassword: If a client certificate store is password-protected, set this value to the store's password.
   • SSLClientCertSubject: The subject of the TLS/SSL client certificate. Used to locate the certificate in the store.
   • SSLClientCertType: The certificate type of the client store.
   • SSLServerCert: The certificate to be accepted from the server.

   Connect Using SSH Authentication

   Using SSH, you can securely login to a remote machine. To access SingleStore data via SSH, configure the following connection properties:

   • SSHClientCert: Set this to the name of the certificate store for the client certificate.
   • SSHClientCertPassword: If a client certificate store is password-protected, set this value to the store's password.
   • SSHClientCertSubject: The subject of the TLS/SSL client certificate. Used to locate the certificate in the store.
   • SSHClientCertType: The certificate type of the client store.
   • SSHPassword: The password that you use to authenticate with the SSH server.
   • SSHPort: The port used for SSH operations.
   • SSHServer: The SSH authentication server you are trying to authenticate against.
   • SSHServerFingerPrint: The SSH Server fingerprint used for verification of the host you are connecting to.
   • SSHUser: Set this to the username that you use to authenticate with the SSH server.

   For example: User=myUser;Password=myPassword;Database=NorthWind;Server=myServer;Port=3306;

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

         @page "/"
         @using System.Data;
         @using System.Data.CData.SingleStore;
         
         <h1>Hello, world!</h1>
         
         Welcome to your Data app.
         
         <div class="row">
             <div class="col-12">
         
                 @using (SingleStoreConnection connection = new SingleStoreConnection(
                   "User=myUser;Password=myPassword;Database=NorthWind;Server=myServer;Port=3306;"))
                 {
                     var sql = "SELECT ShipName, ShipCity FROM Orders WHERE ShipCountry = 'USA'";
                     var results = new DataTable();
         
                     SingleStoreDataAdapter dataAdapter = new SingleStoreDataAdapter(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 SingleStore data as an HTML table in the Blazor app.

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