Resolving Greyed-Out "Create New REST Service" While Adding Native ReportViewer

Environment

Product	Reporting, ReportViewer
Version	19.1.25.716

Description

While adding the native ReportViewer to a Blazor WebAssembly project, the "Create new REST service" option is unavailable. This happens because Blazor WebAssembly operates strictly as a client-side application, running directly on the browser UI thread. As a result, the Reports Web Service cannot be hosted within the same project.

Solution

To resolve this issue, host the Reporting REST Service in a separate project. Follow these steps:

1. Create a new ASP.NET Core project for the Reports Web Service.
2. Implement the Reporting REST Service in the new project using Minimal API. Refer to the article Hosting the Reporting REST Service in ASP.NET Core with Minimal API.
3. Integrate the separately hosted Reporting REST Service with your Blazor WebAssembly project.

See Also

• Hosting the Reporting REST Service in ASP.NET Core with Minimal API
• Blazor WebAssembly vs. Server
• Embedding Reports in Applications