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

Install the CData ADO.NET Provider for SAP HANA XS Advanced

CData ADO.NET Providers allow users to access SAP HANA XS Advanced just like they would access SQL Server, using simple SQL queries.

Install the SAP HANA XS Advanced ADO.NET Data Provider from the CData website or from NuGet. Search NuGet for "SAP HANA XS Advanced ADO.NET Data Provider."

Create a SAP HANA XS Advanced-Connected Blazor App

Start by creating a Blazor project that references the CData ADO.NET Provider for SAP HANA XS Advanced

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.SAPHanaXSA.dll, typically located at C:\Program Files\CData\CData ADO.NET Provider for SAP HANA XS Advanced\lib etstandard2.0).

SELECT SAP HANA XS Advanced Data from the Blazor App

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

   SAP HANA XSA uses the OAuth authentication standard. Before connecting, it is necessary to establish an SAP HANA XSA OData Service. See the OAuth section in the Help documentation for a guide.

   For example: OAuthClientID=my-ouath-client-id;OAuthClientSecret=my-oauth-client-secret;URL=https://hxehost:51027/euro.xsodata;CallbackURL=http://localhost:33333;

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

         @page "/"
         @using System.Data;
         @using System.Data.CData.SAPHanaXSA;
         
         <h1>Hello, world!</h1>
         
         Welcome to your Data app.
         
         <div class="row">
             <div class="col-12">
         
                 @using (SAPHanaXSAConnection connection = new SAPHanaXSAConnection(
                   "OAuthClientID=my-ouath-client-id;OAuthClientSecret=my-oauth-client-secret;URL=https://hxehost:51027/euro.xsodata;CallbackURL=http://localhost:33333;"))
                 {
                     var sql = "SELECT ,  FROM  WHERE  = ''";
                     var results = new DataTable();
         
                     SAPHanaXSADataAdapter dataAdapter = new SAPHanaXSADataAdapter(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 SAP HANA XS Advanced data as an HTML table in the Blazor app.

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