ViewEngine.FindView does not find view in Razor Class Library

hosseinitabar commented 2 years ago

Describe the bug

When we use ViewEngine.FindView(ViewContext, "path/inside/rcl", isMainPage: false), we don't get success in spite of view being there.

To Reproduce

Create a Razor Class Library and create a simple view in it.
Then create another ASP.NET Core Web App project using the template, and add project reference to RCL
Try to render HTML conditionally, based on the presence of the view in RCL

Link to GitHub minimal working example

Exceptions (if any)

There are no exceptions. It just doesn't work.

Further technical details

ASP.NET Core version: .NET SDK 3.1.406, Microsoft.NETCore.App 3.1.21
The IDE (VS) you're running on, and its version: Visual Studio Community Edition 16.11.6
Include the output of dotnet --info:

dotnet --info Output

``` C:\Temp\Git\CheckViewExists>dotnet --info .NET SDK (reflecting any global.json): Version: 5.0.403 Commit: bf9d168ac2 Runtime Environment: OS Name: Windows OS Version: 10.0.19042 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\5.0.403\ Host (useful for support): Version: 5.0.12 Commit: 7211aa01b3 .NET SDKs installed: 3.1.406 [C:\Program Files\dotnet\sdk] 5.0.203 [C:\Program Files\dotnet\sdk] 5.0.403 [C:\Program Files\dotnet\sdk] .NET runtimes installed: Microsoft.AspNetCore.All 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.21 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.21 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 3.1.12 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 3.1.21 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 5.0.12 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] To install additional .NET runtimes or SDKs: https://aka.ms/dotnet-download ```

ghost commented 2 years ago

We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.

pranavkm commented 2 years ago

Try using the GetView API since you're trying to look it up using a path:

ViewEngine.GetView("", "/Pages/Customer/Information.cshtml", isMainPage: false)

MartinChen1973 commented 1 year ago

I encountered same problem in a controller which called a view from Razor Class Library. Something like:

return View("_Base_AutoCreate", entity) ;

And I got an exception saying: The view "_Base_AutoCreate" cannot be found. While at the same time, some other views can be found. So I checked the csprj file of the iibrary, there was something like:

    <Content Remove="Views\Shared\_Base_AutoCreate.cshtml" />
    <Content Remove="Views\Shared\_Base_AutoEdit.cshtml" />

These lines were added automatically. Don't know why, neither when. But after removing them it worked as a charm. Wish this information can be helpful.

dotnet / aspnetcore