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

Install the CData ADO.NET Provider for Sybase

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

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

Create a Sybase-Connected Blazor App

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

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

SELECT Sybase Data from the Blazor App

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

   To connect to Sybase, specify the following connection properties:

   • Server: Set this to the name or network address of the Sybase database instance.
   • Database: Set this to the name of the Sybase database running on the specified Server.

   Optionally, you can also secure your connections with TLS/SSL by setting UseSSL to true.

   Sybase supports several methods for authentication including Password and Kerberos.

   Connect Using Password Authentication

   Set the AuthScheme to Password and set the following connection properties to use Sybase authentication.

   • User: Set this to the username of the authenticating Sybase user.
   • Password: Set this to the username of the authenticating Sybase user.

   Connect using LDAP Authentication

   To connect with LDAP authentication, configure Sybase server-side to use the LDAP authentication mechanism.

   After configuring Sybase for LDAP, you can connect using the same credentials as Password authentication.

   Connect Using Kerberos Authentication

   To leverage Kerberos authentication, begin by enabling it setting AuthScheme to Kerberos. See the Using Kerberos section in the Help documentation for more information on using Kerberos authentication.

   You can find an example connection string below: Server=MyServer;Port=MyPort;User=SampleUser;Password=SamplePassword;Database=MyDB;Kerberos=true;KerberosKDC=MyKDC;KerberosRealm=MYREALM.COM;KerberosSPN=server-name

   For example: User=myuser;Password=mypassword;Server=localhost;Database=mydatabase;Charset=iso_1;

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

         @page "/"
         @using System.Data;
         @using System.Data.CData.Sybase;
         
         <h1>Hello, world!</h1>
         
         Welcome to your Data app.
         
         <div class="row">
             <div class="col-12">
         
                 @using (SybaseConnection connection = new SybaseConnection(
                   "User=myuser;Password=mypassword;Server=localhost;Database=mydatabase;Charset=iso_1;"))
                 {
                     var sql = "SELECT Id, ProductName FROM Products WHERE ProductName = Konbu";
                     var results = new DataTable();
         
                     SybaseDataAdapter dataAdapter = new SybaseDataAdapter(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 Sybase data as an HTML table in the Blazor app.

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