diff --git a/aspnetcore/data/ef-rp/read-related-data.md b/aspnetcore/data/ef-rp/read-related-data.md index 20d9c2d892..30586e3649 100644 --- a/aspnetcore/data/ef-rp/read-related-data.md +++ b/aspnetcore/data/ef-rp/read-related-data.md @@ -69,20 +69,12 @@ To display the name of the assigned department in a list of courses: * Run the following command: ```console + dotnet add package Microsoft.VisualStudio.Web.CodeGeneration.Design --version 2.1.0 dotnet aspnet-codegenerator razorpage -m Course -dc SchoolContext -udl -outDir Pages\Courses --referenceScriptLibraries ``` The preceding command scaffolds the `Course` model. Open the project in Visual Studio. -Build the project. The build generates errors like the following: - -`1>Pages/Courses/Index.cshtml.cs(26,37,26,43): error CS1061: 'SchoolContext' does not - contain a definition for 'Course' and no extension method 'Course' accepting a first - argument of type 'SchoolContext' could be found (are you missing a using directive or - an assembly reference?)` - - Globally change `_context.Course` to `_context.Courses` (that is, add an "s" to `Course`). 7 occurrences are found and updated. - Open *Pages/Courses/Index.cshtml.cs* and examine the `OnGetAsync` method. The scaffolding engine specified eager loading for the `Department` navigation property. The `Include` method specifies eager loading. Run the app and select the **Courses** link. The department column displays the `DepartmentID`, which isn't useful.