Unexpected use of an aliased name

[isaacrlevin]

Is there an existing issue for this?

• I have searched the existing issues

Describe the bug

When I try to add a MudBlazor Autocomplete control to a new Blazor WASM project, I get the following error

Expected Behavior

Build and run project

Steps To Reproduce

dotnet new blazorwasm

Follow getting started steps for MudBlazor
https://github.com/MudBlazor/MudBlazor#quick-installation-guide

Create simple result class

public class SearchBarResultView
{
    public string Text {get; set;}
}

Than add Autocomplete component to Index.razor with Search function

<MudAutocomplete T="SearchBarResultView" Label="US States" @bind-Value="selectedResult" SearchFunc="@Search2" />

private async Task<IEnumerable<SearchBarResultView>> Search1(string value)
{
    return new List<SearchBarResultView>();
}

If you build you should get the above error. I pinned with global.json to .NET 6 and do not have issues.

Exceptions (if any)

No response

.NET Version

No response

Anything else?

No response

[dotnetspark]

I was able to run it without any issue with both .NET 6 and 7 (latest preview).

[IvanJosipovic]

I noticed the same issue with 7.0.100-preview.2.22153.17

Something is broken with EventCallbacks. The following won't compile.

<MudTextField T="string" @bind-Value="data"></MudTextField>

@code{
    string data;
}

[dotnetspark]

@IvanJosipovic it does work for me as well

[JeepNL]

@ylr-research is it enclosed in a <MudForm> element?

<MudForm @ref="form">
    <MudTextField T="string" @bind-Value="data"></MudTextField>
</MudForm>

@code {
    MudForm form;
    string data;
}

Because I'm getting lots of the same errors with .NET 7 preview 2 and https://github.com/JeepNL/CloudFlare

[seevali]

Uninstalling the (newly installed) dotnet-sdk-7.0.100-preview.2.22153.17 solved the issue. The issue occurred only after installing the preview version.

[javiercn]

@isaacrlevin thanks for reporting the issue.

I think this was already fixed a couple of weeks ago on this commit ba467bb in the razor compiler repo. @isaacrlevin @seevali if you try the nightly version of the SDK it is very likely that it is already there and you can get unblocked.

Thanks for contacting us.

We're moving this issue to the .NET 7 Planning milestone for future evaluation / consideration. We would like to keep this around to collect more feedback, which can help us with prioritizing this work. We will re-evaluate this issue, during our next planning meeting(s).
If we later determine, that the issue has no community involvement, or it's very rare and low-impact issue, we will close it - so that the team can focus on more important and high impact issues.
To learn more about what to expect next and how this issue will be handled you can read more about our triage process here.

[javiercn]

I'm keeping the issue open for a milestone to make sure that this has been fixed in preview3, @seevali @isaacrlevin, if you want to try a nightly build and confirm its fixed there we can close this issue, otherwise, we'll keep it open until preview3 is out.

[JeepNL]

@javiercn FYI: no errors with nightly build 7.0.100-preview.3.22171.1

C:\Windows\system32>dotnet --info
.NET SDK (reflecting any global.json):
 Version:   7.0.100-preview.3.22171.1
 Commit:    de88eefa40

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19044
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\7.0.100-preview.3.22171.1\

Host (useful for support):
  Version: 7.0.0-preview.3.22151.6
  Commit:  2330b4bef6

.NET SDKs installed:
  3.1.417 [C:\Program Files\dotnet\sdk]
  5.0.406 [C:\Program Files\dotnet\sdk]
  6.0.300-preview.22154.4 [C:\Program Files\dotnet\sdk]
  7.0.100-preview.1.22110.4 [C:\Program Files\dotnet\sdk]
  7.0.100-preview.3.22171.1 [C:\Program Files\dotnet\sdk]

D:\Repos\CloudFlare\News>dotnet build
Microsoft (R) Build Engine version 17.2.0-preview-22154-03+2e82c9f3f for .NET
Copyright (C) Microsoft Corporation. All rights reserved.

  Determining projects to restore...
  All projects are up-to-date for restore.
  You are using a preview version of .NET. See: https://aka.ms/dotnet-support-policy
  News -> D:\Repos\CloudFlare\News\bin\Debug\net7.0\News.dll
  News (Blazor output) -> D:\Repos\CloudFlare\News\bin\Debug\net7.0\wwwroot

Build succeeded.
    0 Warning(s)
    0 Error(s)

Time Elapsed 00:00:02.03

D:\Repos\CloudFlare\News>

[isaacrlevin]

Confirmed nightly works as well. Thanks for the quick triage on this folks!