CODEWITHSUNDEEP
asp.net-coreiispartial-views
Justin
Justin

Reputation: 1503

Partial view not found exception with asp.net core in IIS only

We are having problems with partial views after migrating to .net 5. The main page will optionally render a custom partial view to allow per-customer customizations. After migrating we are unable to render these partial views. the error message is:

InvalidOperationException: The partial view ~/Resources/Customer/Views/File.cshtml was not found. The following locations were searched: ~/Resources/Customer/Views/File.cshtml

We know the path is valid because if we rename the file the page renders (without customizations). If we debug in visual studio the page renders as expected but in a deployed IIS server it fails. We suspect there is a permissions issue but we have been unable to find it. So far we haven't been able to find anything in google searches or SO

Here is a snippet where we handle the custom file:

// load file path from config
string url = configuration.OrderPageSetting["OrderInfoViewRenderFile"];
bool exists = false;

// determine the path
if (!string.IsNullOrWhiteSpace(url))
{
    string _url = url;
    if (_url.StartsWith("~/")) _url = _url.Substring(2);
    else if (_url.StartsWith("/")) _url = _url.Substring(1);
    exists = System.IO.File.Exists(System.IO.Path.Combine(Resource.SystemDirectory, _url));
}

// test for and render custom view
if (exists)
{
    var data = new ViewDataDictionary<object>(new EmptyModelMetadataProvider(), new ModelStateDictionary());
    data.Add("Order", order);
    data.Add("Config", configuration);
    await Html.RenderPartialAsync(url, data);
}
else
{
... default rendering ...
}

The application is hosted in a virtual directory with a dedicated application pool. This problem occurs without a web.config at the site level. On the same server, the prior .net framework version of the application works correctly.

here is the applications web.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\myapp.dll" stdoutLogEnabled="false" hostingModel="InProcess" stdoutLogFile=".\logs\stdout">
        <environmentVariables>
          <environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
        </environmentVariables>
      </aspNetCore>
    </system.webServer>
  </location>
</configuration>

Upvotes: 0

Views: 715

Answers (2)

Manuprasad .M
Manuprasad .M

Reputation: 1

Open the project page (ProjectName.csproj) and check the following line is there or not <Content Remove="Views\**\**.cshtml" />

if there , please remove. And include the following

<None Include="Views\**\**.cshtml" />

Note:-Please replace the url with your partial page url.

Upvotes: 0

Justin
Justin

Reputation: 1503

A co-worker found the solution the problem, the clue was in https://weblog.west-wind.com/posts/2019/Sep/30/Serving-ASPNET-Core-Web-Content-from-External-Folders

There were 2 changes required:

  1. Add package: Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation
  2. called extension to support runtime complication on the controllers/views:
    services.AddControllersWithViews().AddRazorRuntimeCompilation(opt =>
    {
        opt.FileProviders.Add(
            new PhysicalFileProvider(System.IO.Path.Combine(Environment.ContentRootPath, ""))
        );
    })

if you want to change where the dynamic compilation is supported, simply change the "" to the path where it is permitted.

Upvotes: 0

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