Aspnetcore: Blazor: Default template doesn't run on newest version
Describe the bug
When I create a new blazor project using the most recent version it builds but it doesn't run.
To Reproduce
- Install .NET Core SDK (3.0.100-preview4-011223)
- dotnet new -i Microsoft.AspNetCore.Blazor.Templates::3.0.0-preview4-19216-03
- dotnet new blazor
- dotnet build
- dotnet run
Error Message
> dotnet run
Could not execute because the specified command or file was not found.
Possible reasons for this include:
* You misspelled a built-in dotnet command.
* You intended to execute a .NET Core program, but dotnet-C:\Users\Ricardo does not exist.
* You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.
Additional context
> dotnet --info
.NET Core SDK (reflecting any global.json):
Version: 3.0.100-preview4-011223
Commit: 118dd862c8
Runtime Environment:
OS Name: Windows
OS Version: 10.0.17763
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\3.0.100-preview4-011223\
Host (useful for support):
Version: 3.0.0-preview4-27615-11
Commit: ee54d4cbd2
.NET Core SDKs installed:
2.1.504 [C:\Program Files\dotnet\sdk]
2.1.602 [C:\Program Files\dotnet\sdk]
2.2.105 [C:\Program Files\dotnet\sdk]
3.0.100-preview4-011223 [C:\Program Files\dotnet\sdk]
.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 3.0.0-preview4-19216-03 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 3.0.0-preview4-27615-11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.0.0-preview4-27613-28 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
rjmr97
👍1
All 17 comments
@rjmr97 Did you cd into the folder?
davidfowl
on 20 Apr 2019
@rjmr97 Did you cd into the folder?
@davidfowl I don't think I need to cd after dotnet new because I didn't specify a folder
I tried it again, here's the full output:
D:\>mkdir test && cd test
D:\test>dotnet new blazor
The template "Blazor (client-side)" was created successfully.
Processing post-creation actions...
Running 'dotnet restore' on D:\test\test.csproj...
Restore completed in 240.32 ms for D:\test\test.csproj.
Restore succeeded.
D:\test>dotnet build
Microsoft (R) Build Engine version 16.1.54-preview+gd004974104 for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.
Restore completed in 26.34 ms for D:\test\test.csproj.
C:\Program Files\dotnet\sdk\3.0.100-preview4-011223\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.RuntimeIdentifierInference.targets(151,5): message NETSDK1057: You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview [D:\test\test.csproj]
test -> D:\test\bin\Debug\netstandard2.0\test.dll
Processing embedded resource linker descriptor: mscorlib.xml
Duplicate preserve in resource mscorlib.xml in mscorlib, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e of System.Threading.WasmRuntime (All). Duplicate uses (All)
Type System.Reflection.Assembly has no fields to preserve
Type Mono.ValueTuple has no fields to preserve
Output action: Link assembly: test, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
Output action: Save assembly: System.ComponentModel.Annotations, Version=4.2.2.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
Output action: Save assembly: Mono.WebAssembly.Interop, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
Output action: Save assembly: Microsoft.JSInterop, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
Output action: Save assembly: Microsoft.Extensions.DependencyInjection.Abstractions, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
Output action: Save assembly: Microsoft.Extensions.DependencyInjection, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
Output action: Save assembly: Microsoft.AspNetCore.Components.Browser, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
Output action: Save assembly: Microsoft.AspNetCore.Components, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
Output action: Save assembly: Microsoft.AspNetCore.Blazor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60
Output action: Delete assembly: netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
Output action: Link assembly: mscorlib, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
Output action: Link assembly: System, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
Output action: Link assembly: Mono.Security, Version=2.0.5.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756
Output action: Delete assembly: System.Xml, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
Output action: Delete assembly: System.Numerics, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Output action: Link assembly: System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
Output action: Delete assembly: System.Data, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Output action: Delete assembly: System.Drawing.Common, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
Output action: Delete assembly: System.IO.Compression, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Output action: Delete assembly: System.IO.Compression.FileSystem, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Output action: Delete assembly: System.ComponentModel.Composition, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Output action: Link assembly: System.Net.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
Output action: Delete assembly: System.Runtime.Serialization, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e
Output action: Delete assembly: System.Transactions, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Output action: Delete assembly: System.Web.Services, Version=2.0.5.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
Output action: Delete assembly: System.Xml.Linq, Version=2.0.5.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
Output action: Delete assembly: System.ServiceModel.Internals, Version=0.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
Writing boot data to: D:\test\obj\Debug\netstandard2.0\blazor\blazor.boot.json
Blazor Build result -> 20 files in D:\test\bin\Debug\netstandard2.0\dist
Build succeeded.
0 Warning(s)
0 Error(s)
Time Elapsed 00:00:08.28
D:\test>dotnet run
Could not execute because the specified command or file was not found.
Possible reasons for this include:
* You misspelled a built-in dotnet command.
* You intended to execute a .NET Core program, but dotnet-C:\Users\Ricardo does not exist.
* You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.
D:\test>
I run into the same error message when running the commands from the Get started with Blazor documentation page:
dotnet new blazor -o WebApplication1
cd WebApplication1
dotnet run
Outputs the same message as @rjmr97, same dotnet --info.
jdebarochez
on 20 Apr 2019
@rjmr97 @jdebarochez Are you able to successfully run a console app using .NET Core 3.0?:
dotnet new console -o ConsoleApp1
cd ConsoleApp1
dotnet run
danroth27
on 21 Apr 2019
No problem with that:
PS C:\dev\draft\todelete> dotnet new console -o ConsoleApp1
The template "Console Application" was created successfully.
Processing post-creation actions...
Running 'dotnet restore' on ConsoleApp1\ConsoleApp1.csproj...
Restore completed in 278.11 ms for C:\dev\draft\todelete\ConsoleApp1\ConsoleApp1.csproj.
Restore succeeded.
PS C:\dev\draft\todelete> cd ConsoleApp1
PS C:\dev\draft\todelete\ConsoleApp1> dotnet run
Hello World!
Only blazor template fails to run apparently. dotnet new blazorserver -o blazor-serverside works for me.
jdebarochez
on 21 Apr 2019
I can also run the console app with no problems.
D:\>mkdir test && cd test
D:\test>dotnet new console
The template "Console Application" was created successfully.
Processing post-creation actions...
Running 'dotnet restore' on D:\test\test.csproj...
Restore completed in 126.13 ms for D:\test\test.csproj.
Restore succeeded.
D:\test>dotnet run
Hello World!
To add to @jdebarochez's response, I can run a blazorhosted app
D:\>mkdir test && cd test
D:\test>dotnet new blazorhosted
The template "Blazor (ASP.NET Core hosted)" was created successfully.
Processing post-creation actions...
Running 'dotnet restore' on D:\test\test.Server/test.Server.csproj...
Restore completed in 240.35 ms for D:\test\test.Shared\test.Shared.csproj.
Restore completed in 240.35 ms for D:\test\test.Client\test.Client.csproj.
Restore completed in 668.47 ms for D:\test\test.Server\test.Server.csproj.
Restore succeeded.
Running 'dotnet restore' on D:\test\test.Client/test.Client.csproj...
Restore completed in 27.01 ms for D:\test\test.Client\test.Client.csproj.
Restore completed in 27.01 ms for D:\test\test.Shared\test.Shared.csproj.
Restore succeeded.
Running 'dotnet restore' on D:\test\test.Shared/test.Shared.csproj...
Restore completed in 22.66 ms for D:\test\test.Shared\test.Shared.csproj.
Restore succeeded.
D:\test>cd test.Server
D:\test\test.Server>dotnet run
info: Microsoft.AspNetCore.DataProtection.KeyManagement.XmlKeyManager[0]
User profile is available. Using 'C:\Users\Ricardo Ribeiro\AppData\Local\ASP.NET\DataProtection-Keys' as key repository and Windows DPAPI to encrypt keys at rest.
Hosting environment: Production
Content root path: D:\test\test.Server
Now listening on: http://localhost:5000
Now listening on: https://localhost:5001
Application started. Press Ctrl+C to shut down.
I think the problem may be Microsoft.AspNetCore.Blazor.DevServer since blazorhosted uses Microsoft.AspNetCore.Blazor.Server instead.
rjmr97
on 21 Apr 2019
I'm having the exact issue with blazor (client-side) and I'm only able to create a blazorserver from Visual Studio but not from CLI.
Unable to determine the desired template from the input template name: blazorserver.
The following templates partially match the input. Be more specific with the template name and/or language.
Templates Short Name Language Tags
---------------------------------------------------------------------------------------------------
Blazor (server-side) blazorserverside [C#] Web/Blazor
Blazor (Server-side in ASP.NET Core) blazorserverside [C#] Web/Blazor/ServerSide
ramimod
on 21 Apr 2019
@ramimod Did you run the command dotnet new -i Microsoft.AspNetCore.Blazor.Templates::3.0.0-preview4-19216-03?
Whats your output of dotnet new --help?
rjmr97
on 21 Apr 2019
@rjmr97
Output for
dotnet new -i Microsoft.AspNetCore.Blazor.Templates::3.0.0-preview4-19216-03
PS C:\Users\My User\Desktop\Blazor> dotnet new -i Microsoft.AspNetCore.Blazor.Templates::3.0.0-preview4-19216-03
Restore completed in 454.36 ms for C:\Users\My User\.templateengine\dotnetcli\v3.0.100-preview4-011223\scratch\restore.csproj.
Usage: new [options]
Options:
-h, --help Displays help for this command.
-l, --list Lists templates containing the specified name. If no name is specified, lists all templates.
-n, --name The name for the output being created. If no name is specified, the name of the current directory is used.
-o, --output Location to place the generated output.
-i, --install Installs a source or a template pack.
-u, --uninstall Uninstalls a source or a template pack.
--nuget-source Specifies a NuGet source to use during install.
--type Filters templates based on available types. Predefined values are "project", "item" or "other".
--dry-run Displays a summary of what would happen if the given command line were run if it would result in a template creation.
--force Forces content to be generated even if it would change existing files.
-lang, --language Filters templates based on language and specifies the language of the template to create.
Templates Short Name Language Tags
-------------------------------------------------------------------------------------------------------------------------------
Console Application console [C#], F#, VB Common/Console
Class library classlib [C#], F#, VB Common/Library
WPF Application wpf [C#] Common/WPF
Windows Forms (WinForms) Application winforms [C#] Common/WinForms
Worker Service worker [C#] Common/Worker/Web
Unit Test Project mstest [C#], F#, VB Test/MSTest
NUnit 3 Test Project nunit [C#], F#, VB Test/NUnit
NUnit 3 Test Item nunit-test [C#], F#, VB Test/NUnit
xUnit Test Project xunit [C#], F#, VB Test/xUnit
Razor Component razorcomponent [C#] Web/ASP.NET
Razor Page page [C#] Web/ASP.NET
MVC ViewImports viewimports [C#] Web/ASP.NET
MVC ViewStart viewstart [C#] Web/ASP.NET
Blazor (server-side) blazorserverside [C#] Web/Blazor
Blazor (ASP.NET Core hosted) blazorhosted [C#] Web/Blazor/Hosted
Blazor Library blazorlib [C#] Web/Blazor/Library
Blazor (Server-side in ASP.NET Core) blazorserverside [C#] Web/Blazor/ServerSide
Blazor (client-side) blazor [C#] Web/Blazor/Standalone
ASP.NET Core Empty web [C#], F# Web/Empty
ASP.NET Core Web App (Model-View-Controller) mvc [C#], F# Web/MVC
ASP.NET Core Web App webapp [C#] Web/MVC/Razor Pages
ASP.NET Core with Angular angular [C#] Web/MVC/SPA
ASP.NET Core with React.js react [C#] Web/MVC/SPA
ASP.NET Core with React.js and Redux reactredux [C#] Web/MVC/SPA
Razor Class Library razorclasslib [C#] Web/Razor/Library/Razor Class Library
ASP.NET Core Web API webapi [C#], F# Web/WebAPI
ASP.NET Core gRPC Service grpc [C#] Web/gRPC
global.json file globaljson Config
NuGet Config nugetconfig Config
Dotnet local tool manifest file tool-manifest Config
Web Config webconfig Config
Solution File sln Solution
Examples:
dotnet new mvc --auth Individual
dotnet new mstest
dotnet new --help
PS C:\Users\My User\Desktop\Blazor>
Output for
dotnet new --help
PS C:\Users\My User\Desktop\Blazor> dotnet new --help
Usage: new [options]
Options:
-h, --help Displays help for this command.
-l, --list Lists templates containing the specified name. If no name is specified, lists all templates.
-n, --name The name for the output being created. If no name is specified, the name of the current directory is used.
-o, --output Location to place the generated output.
-i, --install Installs a source or a template pack.
-u, --uninstall Uninstalls a source or a template pack.
--nuget-source Specifies a NuGet source to use during install.
--type Filters templates based on available types. Predefined values are "project", "item" or "other".
--dry-run Displays a summary of what would happen if the given command line were run if it would result in a template creation.
--force Forces content to be generated even if it would change existing files.
-lang, --language Filters templates based on language and specifies the language of the template to create.
Templates Short Name Language Tags
-------------------------------------------------------------------------------------------------------------------------------
Console Application console [C#], F#, VB Common/Console
Class library classlib [C#], F#, VB Common/Library
WPF Application wpf [C#] Common/WPF
Windows Forms (WinForms) Application winforms [C#] Common/WinForms
Worker Service worker [C#] Common/Worker/Web
Unit Test Project mstest [C#], F#, VB Test/MSTest
NUnit 3 Test Project nunit [C#], F#, VB Test/NUnit
NUnit 3 Test Item nunit-test [C#], F#, VB Test/NUnit
xUnit Test Project xunit [C#], F#, VB Test/xUnit
Razor Component razorcomponent [C#] Web/ASP.NET
Razor Page page [C#] Web/ASP.NET
MVC ViewImports viewimports [C#] Web/ASP.NET
MVC ViewStart viewstart [C#] Web/ASP.NET
Blazor (server-side) blazorserverside [C#] Web/Blazor
Blazor (ASP.NET Core hosted) blazorhosted [C#] Web/Blazor/Hosted
Blazor Library blazorlib [C#] Web/Blazor/Library
Blazor (Server-side in ASP.NET Core) blazorserverside [C#] Web/Blazor/ServerSide
Blazor (client-side) blazor [C#] Web/Blazor/Standalone
ASP.NET Core Empty web [C#], F# Web/Empty
ASP.NET Core Web App (Model-View-Controller) mvc [C#], F# Web/MVC
ASP.NET Core Web App webapp [C#] Web/MVC/Razor Pages
ASP.NET Core with Angular angular [C#] Web/MVC/SPA
ASP.NET Core with React.js react [C#] Web/MVC/SPA
ASP.NET Core with React.js and Redux reactredux [C#] Web/MVC/SPA
Razor Class Library razorclasslib [C#] Web/Razor/Library/Razor Class Library
ASP.NET Core Web API webapi [C#], F# Web/WebAPI
ASP.NET Core gRPC Service grpc [C#] Web/gRPC
global.json file globaljson Config
NuGet Config nugetconfig Config
Dotnet local tool manifest file tool-manifest Config
Web Config webconfig Config
Solution File sln Solution
Examples:
dotnet new mvc --auth Individual
dotnet new webconfig
dotnet new --help
PS C:\Users\My User\Desktop\Blazor>
@ramimod Can you open a new issue so I (or others) can try to help you? I don't think your problem is related to mine so there's no reason to use this thread
rjmr97
on 21 Apr 2019
👍1
You intended to execute a .NET Core program, but dotnet-C:Users\Ricardo does not exist.
@SteveSandersonMS Looks like the Blazor self-host template might have issues when the user has spaces in their user name?
danroth27
on 22 Apr 2019
@danroth27 I created a new account with no spaces (rribeiro) and it worked.
D:\>mkdir test4 && cd test4
D:\test4>dotnet new blazor
The template "Blazor (client-side)" was created successfully.
Processing post-creation actions...
Running 'dotnet restore' on D:\test4\test4.csproj...
Restore completed in 3,14 sec for D:\test4\test4.csproj.
Restore succeeded.
D:\test4>dotnet run
Hosting environment: Production
Content root path: D:\test4
Now listening on: http://localhost:5000
Now listening on: https://localhost:5001
Application started. Press Ctrl+C to shut down.
👍1
Thanks @rjmr97 for reporting this. Thanks @pranavkm and @JunTaoLuo for fixing it!
SteveSandersonMS
on 23 Apr 2019
👍1
I just pulled down the latest templates, etc etc asd per the "Getting Started with Blazor" tutorial and am running into this exact situation. I see the fix was commited, but what can i do to get that fix today? or what is the work around today? Just trying to save time without having to read a bunch on how to call dotnet run with a bunch of switches and parameters. Thanks
Zombie8
on 3 May 2019
I fixed my version by replacing the file C:\Users\USER_NAME\.nuget\packages\microsoft.aspnetcore.blazor.devserver\3.0.0-preview4-19216-03\build\Microsoft.AspNetCore.Blazor.DevServer.props with the one from the fix
rjmr97
on 3 May 2019
👎1
👍1
That did the trick @rjmr97 thanks for the suggestion!
Zombie8
on 3 May 2019
The issue is due to the space between the username (_C:Users{USER_NAME}_)
The fix is in the Below PR. It did resolve the issue.
https://github.com/aspnet/AspNetCore/pull/9659/files
If still, the issue persists. Delete the Debug & Release folders from bin and restart the vs.
Thanks @pakrym for the fix
harikrishnakada
on 24 Jun 2019
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