Added new kb article fixing-imvcbuilder-errors-telerik-reporting-rest-service

knowledge-base/fixing-imvcbuilder-errors-telerik-reporting-rest-service.md

@@ -0,0 +1,80 @@
+---
+title: Resolving IMvcBuilder Errors When Hosting Telerik Reporting REST Service in ASP.NET Core
+description: Learn how to address IMvcBuilder errors when implementing the Telerik Reporting REST Service in ASP.NET Core with Minimal API.
+type: how-to
+page_title: Fixing IMvcBuilder Errors in Telerik Reporting REST Service Configuration
+meta_title: Fixing IMvcBuilder Errors in Telerik Reporting REST Service Configuration
+slug: fixing-imvcbuilder-errors-telerik-reporting-rest-service
+tags: reporting, imvcbuilder, errors, asp.net-core, addtelerikreporting, hosting, rest-service
+res_type: kb
+ticketid: 1706442
+---
+
+## Environment
+
+<table>
+   <tbody>
+      <tr>
+         <td> Product </td>
+         <td> Reporting </td>
+      </tr>
+      <tr>
+         <td> Version </td>
+         <td> 19.3.25.1119 </td>
+      </tr>
+   </tbody>
+</table>
+
+## Description
+
+I encountered build error when configuring the Telerik Reporting REST Service in ASP.NET Core with Minimal API. The errors is:
+
+`'IMvcBuilder' does not contain a definition for 'AddTelerikReporting' and no accessible extension method 'AddTelerikReporting' accepting a first argument of type 'IMvcBuilder' could be found (are you missing a using directive or an assembly reference?)`
+
+## Solution
+
+To resolve the error, ensure that the `AddTelerikReporting` method is applied to an `IMvcBuilder` object, as this extension method is defined for the `IMvcBuilder` interface.
+
+Follow these steps:
+
+### Option 1: Add an `IMvcBuilder`  to the IServiceCollection
+
+1. Add the MVC services to the `IServiceCollection`:
+
+   ```csharp
+   var service = builder.Services.AddMvc();
+   ```
+
+1. Add Newtonsoft.Json to the service:
+
+   ```csharp
+   service.AddNewtonsoftJson();
+   ```
+
+1. Define the reports path and add Telerik Reporting:
+
+   ```csharp
+   var reportsPath = System.IO.Path.Combine(builder.Environment.ContentRootPath, "Reports");
+   service.AddTelerikReporting("TelerikReportingRestServiceMinimalApi", reportsPath);
+   ```
+
+### Option 2: Chain the extension methods
+
+Alternatively, chain the `AddMvc`, `AddNewtonsoftJson`, and `AddTelerikReporting` methods directly:
+
+```csharp
+builder.Services.AddMvc().AddNewtonsoftJson().AddTelerikReporting("TelerikReportingRestServiceMinimalApi", reportsPath);
+```
+
+If using controllers, you can chain methods like this:
+
+```csharp
+builder.Services.AddControllers().AddNewtonsoftJson().AddTelerikReporting("TelerikReportingRestServiceMinimalApi", reportsPath);
+```
+
+> Replace `"TelerikReportingRestServiceMinimalApi"` and the reports path with your specific configuration values.
+
+## See Also
+
+* [Hosting the Reporting REST Service in ASP.NET Core with Minimal API]({%slug telerikreporting/using-reports-in-applications/host-the-report-engine-remotely/telerik-reporting-rest-services/asp.net-core-web-api-implementation/how-to-host-reports-service-in-asp.net-core-in-.net-6-with-minimal-api%})
+* [IMvcBuilder Interface](https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.dependencyinjection.imvcbuilder?view=aspnetcore-9.0)