Error connecting to SQL Server from Razor Pages - asp.net-core

Question

I am trying to convert my very basic website from straight HTML to Razor Pages. My main resources have been Adam Freeman and Mike Brind. So far I have created a small foundation and now am trying to run a query against my database in Index.cshtml. If I comment out the query, the application will compile and run (that is to say it will display the home page). When I try to include the query I get a runtime error when trying to load the home page:
An unhandled exception occurred while processing the request.
SqlException: Cannot open database "Alpha" requested by the login. The login failed.
InvalidOperationException: An exception has been raised that is likely due to a transient failure. Consider enabling transient error resiliency by adding 'EnableRetryOnFailure' to the 'UseSqlServer' call.
Alpha.Pages.Pages_Index.ExecuteAsync() in Index.cshtml
#foreach (YearSummary s in Model.YearSummaries) {
fail: Microsoft.EntityFrameworkCore.Database.Connection[20004]
An error occurred using the connection to database 'Alpha' on server '(localdb)\MSSQLLocalDB'.
fail: Microsoft.EntityFrameworkCore.Query[10100]
An exception occurred while iterating over the results of a query for context type 'Alpha.Data.AlphaContext'.
I'm assuming this has something to do with my connection string.
appsettings.json
"AllowedHosts": "*",
"ConnectionStrings": {
"AlphaConnection": "Server=(localdb)\MSSQLLocalDB;Database=Alpha;MultipleActiveResultSets=true"
}
Program.cs
builder.Services.AddDbContext(options => {
options.UseSqlServer(builder.Configuration.GetConnectionString("AlphaConnection"));
});
Index.cshtml
#foreach (YearSummary s in Model.YearSummaries) {
I've played around with the connection string, with no luck. I really don't know where to go from here.
I have uploaded my code to GitHub: https://github.com/JB45424/Alpha
Thank you for any assistance.

Answer 1

Have you updated the database after the database migration? If the database is not updated, problems like this can occur.
I cloned your code and ran it directly and I also encountered your error. But after I install the Microsoft.EntityFrameworkCore.Tools NuGet package and run the following commands to migrate and update the database, the program works fine:
Add-Migration InitialCreate
Update-Database
Helpful link: Test the Asp.Net Core MVC app.
Test Result:
Is this the effect of your page loading normally?