I am working on generating HTML to send to a PDF generator and discovered this this question on Stackoverflow. It points to Paris Polyzos and his article. Upon implementing the code in .Net Core 3.0, the following error appears:
Cannot resolve scoped service 'Microsoft.AspNetCore.Mvc.ViewFeatures.Buffers.IViewBufferScope' from root provider.
Has anyone any thought on how to work around this?
I had the same problem with you since I needed to render a HTML view to a string. I managed to solve it by using an IServiceScopeFactory. You need to inject an IServiceScopeFactory (for example via the constructor) and then use that one to create a scope with CreateScope() method and then feed the ServiceProvider of that scope to the HttpContext RequestServices property. For example:
class MyRendererService
{
private readonly IServiceScopeFactory _serviceScopeFactory {get; set;}
public MyRendererService(IServiceScopeFactory serviceScopeFactory)
{
_serviceScopeFactory = serviceScopeFactory;
}
public void MyRenderingMethod()
{
using (var scope = _serviceScopeFactory.CreateScope())
{
var httpContext = new DefaultHttpContext() { RequestServices = scope.ServiceProvider };
// The rest of your Html rendering code here...
}
}
}
I know that you might have already solved the problem since you asked this more than a month ago, but it might help someone else too.
