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BlazorWebView for WPF not debuggable when blazor code is in a different project

See original GitHub issue

Description

I am unable to run/debug WPF application from Visual Studio when hosting a blazor application from another project because index.html does not exist in the output folder. I want to re-use the blazor project from my web application.

WPF’s BlazorWebView uses PhysicalFileProvider to the folder of the file pointed to by the value of HostPage property. But that file is in another project and is not copied to the WPF project’s output folder. If provide path to that file then the generated isolated css file will not be loaded. It should either be customizable and/or a CompositeFileProvider that uses all paths from the blazor project’s static web assets xml file should be configured if that file exists.

Steps to Reproduce

Extract the attached zip file
Open the solution is Visual Studio
Press F5 to run it

Expected Behavior

The application runs and displays my web page as it would in web browser when the blazor project is run.

Actual Behavior

DirectoryNotFoundException is thrown pointing to BlazorWpf1\BlazorWpf1\bin\Debug\net6.0-windows\wwwroot\

Basic Information

Version with issue: 6.0.0-preview.4.21253.5
Last known good version: none
IDE: Visual Studio 2019
Platform Target Frameworks: net6.0-windows
Nuget Packages:
1. Microsoft.AspNetCore.Components.WebView.Wpf (version 6.0.0-preview.4.21253.5)
Affected Devices:

Reproduction Link

BlazorWpf1.zip

Workaround

From the source of WPF WebView, I could not figure out any.

Issue Analytics

State:
Created 2 years ago
Comments:12 (2 by maintainers)

Top GitHub Comments

1reaction

Eiloncommented, Dec 15, 2021

Hi, I know this is an older issue now, but I got the repro project working on my machine by doing the following:

Updating NuGet packages to the latest .NET / MAUI versions
Updating the WPF project’s CSPROJ to have <Project Sdk="Microsoft.NET.Sdk.Razor">

The reason that (2) is needed is that the logic for making static web assets such as CSS/HTML/JS available is all part of the Razor SDK. By referencing the SDK, that brings in the MSBuild targets that place files in the correct location in order to be loaded by the system.

If you want a totally custom way of providing static assets, we recently added that feature in this PR: https://github.com/dotnet/maui/pull/3191

0reactions

Eiloncommented, Dec 16, 2021

2 days ago 😁 https://www.nuget.org/packages/Microsoft.AspNetCore.Components.WebView.Wpf/6.0.101-preview.11.2349