Blazor WebAssembly cannot load resources files from class library

Question

I'm currently working on a Blazor WebAssembly Asp.NET hosted in .NET Standard 2.1.

I try to load resources files from a separate .NET Standard 2.1. C# Class library.

Unfortunately I always get the following error:

"Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100] Unhandled exception rendering component: Could not load type of field 'MyNamespace.Footer:k__BackingField' (0) due to: Could not load file or assembly 'MyNamespace.Resources, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies."

My .resx files are set to Access Modifier: Public and look like this in the properties tab:

My project structure looks like this:

MyNamespace.BlazorApp.Client
MyNamespace.BlazorApp.Server
MyNamespace.BlazorApp.Resources

I load the resources like this:

MyNamespace.BlazorApp.Client:

In my Program.cs Main Method I set the current culture like this:

CultureInfo.DefaultThreadCurrentCulture = new CultureInfo("en-US");
CultureInfo.DefaultThreadCurrentUICulture = new CultureInfo("en-US");

and I add the Localization service:

services.AddLocalization();

Further on in a .razor page where I want to use the culture setting I inject the Localization service:

@inject IStringLocalizer<Translations> Translations

MyNamespace.BlazorApp.Server

Here I simply load the project reference to my resources project. I don't use the .resx in this project.

Do you know how to load resources from an external .NET Standard 2.1. C# Class library into a Blazor Wasm project?

Shooting blindly... Does the 3rd party have AddRazorSupportForMvc in the project file? ref: learn.microsoft.com/en-us/aspnet/core/migration/… — mynkow
– mynkow, Commented Aug 3, 2020 at 9:37
Still quite a few details are missing: Where is Translations defined (ns & asm), what is the folderstructure? What is the exact name of the resx files? — Henk Holterman
– Henk Holterman, Commented Aug 3, 2020 at 10:13

Henk Holterman · Accepted Answer · 2020-08-03 10:23:07Z

3

The error comes from a name clash, the project can be compiled but not loaded.
I know a way to get it working, I'm not sure is this is the only or best way.

Rename your resx project to MyNamespace.BlazorApp.Translations
Make sure there is a public class Translation in the root (no 's')
Make a Folder called Resources in the Translations project
Add Translation.resx, Translation.es.resx etc to that folder
Change the config to builder.Services.AddLocalization(options => options.ResourcesPath = "Resources");

Resources is a default name at several places, not a good idea to name your own project the same. The ResourcesPath seems to be required, I don't know what the defaults are.

answered Aug 3, 2020 at 10:23

Henk Holterman

276k33 gold badges353 silver badges540 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Blazor WebAssembly cannot load resources files from class library

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related