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ahmed elbarbary
NA
1.6k
275.3k
error CS0234: The type or namespace name 'Hosting' does not exist in t
May 19 2021 9:47 AM
I work on visual studio 2017 asp.net core 2.2 when create new api controller I get Error
There was an error running the template C:\Users\ahmed.barbary\.nuget\packages\microsoft.visualstudio.web.codegenerators.mvc\2.2.3\Templates\ControllerGenerator\ApiEmptyController.cshtml: Template Processing Failed:(4,47): error CS0234: The type or
namespace
name
'Hosting'
does not exist
in
the
namespace
'Microsoft.AspNetCore.Razor'
(are you missing an assembly reference?)
(10,41): error CS0234: The type or
namespace
name
'Hosting'
does not exist
in
the
namespace
'Microsoft.AspNetCore.Razor'
(are you missing an assembly reference?)
at Microsoft.VisualStudio.Web.CodeGeneration.ActionInvoker.<BuildCommandLine>b__6_0()
at Microsoft.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args)
at Microsoft.VisualStudio.Web.CodeGeneration.ActionInvoker.Execute(String[] args)
at Microsoft.VisualStudio.Web.CodeGeneration.CodeGenCommand.Execute(String[] args)
why this error happen and how to solve it
project file as controller project as below :
<Project Sdk=
"Microsoft.NET.Sdk.Web"
>
<PropertyGroup Label=
"Globals"
>
<SccProjectName>SAK</SccProjectName>
<SccProvider>SAK</SccProvider>
<SccAuxPath>SAK</SccAuxPath>
<SccLocalPath>SAK</SccLocalPath>
</PropertyGroup>
<PropertyGroup>
<TargetFramework>netcoreapp2.2</TargetFramework>
</PropertyGroup>
<PropertyGroup Condition=
"'$(Configuration)|$(Platform)'=='Release|AnyCPU'"
>
<DefineConstants>TRACE;RELEASE;NETCOREAPP;NETCOREAPP2_2</DefineConstants>
<Optimize>
true
</Optimize>
<DebugType>portable</DebugType>
<DebugSymbols>
true
</DebugSymbols>
<MvcRazorCompileOnPublish>
false
</MvcRazorCompileOnPublish>
</PropertyGroup>
<ItemGroup>
<Folder Include=
"wwwroot\"
/>
</ItemGroup>
<ItemGroup>
<PackageReference Include=
"Microsoft.AspNetCore.All"
Version=
"2.0.0"
/>
<PackageReference Include=
"Microsoft.VisualStudio.Web.CodeGeneration.Design"
Version=
"2.2.3"
/>
<PackageReference Include=
"Microsoft.Windows.Compatibility"
Version=
"3.1.0"
/>
<PackageReference Include=
"Serilog.Extensions.Logging.File"
Version=
"2.0.0"
/>
</ItemGroup>
<ItemGroup>
<DotNetCliToolReference Include=
"Microsoft.VisualStudio.Web.CodeGeneration.Tools"
Version=
"2.0.0"
/>
</ItemGroup>
<ItemGroup>
<ProjectReference Include=
"..\Framework.Model\Framework.Model.csproj"
/>
<ProjectReference Include=
"..\Framework.MSSQL\Framework.MSSQL.csproj"
/>
<ProjectReference Include=
"..\Framework.Services\Framework.Services.csproj"
/>
</ItemGroup>
<ItemGroup>
<Reference Include=
"Z2Data.Utils.BaseRepository"
>
<HintPath>..\..\..\dll\Z2Data.Utils.BaseRepository.dll</HintPath>
</Reference>
<Reference Include=
"Z2Data.Utils.DataMappingHelper"
>
<HintPath>..\..\..\dll\Z2Data.Utils.DataMappingHelper.dll</HintPath>
</Reference>
<Reference Include=
"Z2Data.Utils.DataProvider"
>
<HintPath>..\..\..\dll\Z2Data.Utils.DataProvider.dll</HintPath>
</Reference>
</ItemGroup>
</Project>
to get version of .net core
i write
dotnet --info
and result
Microsoft Windows [Version 10.0.10586]
(c) 2015 Microsoft Corporation. All rights reserved.
C:\Windows\system32>dotnet --info
.NET Core SDK (reflecting any global.json):
Version: 2.2.110
Commit: 4797dabd3c
Runtime Environment:
OS Name: Windows
OS Version: 10.0.10586
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\2.2.110\
Host (useful
for
support):
Version: 2.2.8
Commit: b9aa1abc51
.NET Core SDKs installed:
1.1.14 [C:\Program Files\dotnet\sdk]
2.1.202 [C:\Program Files\dotnet\sdk]
2.1.509 [C:\Program Files\dotnet\sdk]
2.2.110 [C:\Program Files\dotnet\sdk]
.NET Core runtimes installed:
Microsoft.AspNetCore.All 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.All 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
Microsoft.AspNetCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 1.0.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 1.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.0.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.1.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
so how to solve issue please
I can't create New api controller
Reply
Answers (
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