Cs0102 c# der typ mainwindow enthält bereits eine definition für

Is there an existing issue for this?

I have searched the existing issues

Describe the bug

This is similar to bug 21656. But the underlying causes are different

Inhaltsverzeichnis Show

Is there an existing issue for this?
Describe the bug
Expected Behavior
Steps To Reproduce
Exceptions (if any)
.NET Version
Anything else?
How To Solve The generic type already contains a definition Error ?

I have a OpenAPI json file which I believe is to spec (below) it generates multiple clients in the same namespace offering me no way to make only one client or to separate the clients name. I have tried the workaround in 21656 and it does not seem to work.

Expected Behavior

That i can specify something like
{tags}Client
under
So that the client generates properly,
Or that the client generates properly under one client name as this has no collisions in the JSON, so I am unsure why the tool is doing this.

Steps To Reproduce

Generate a Client in vs 2022 based on this JSON FILE:
https://devopsishealthy.kldev.io/api/openapi/V2_JSON?domain=https://devopsishealthy.kldev.io

Exceptions (if any)

Severity Code Description Project File Line Suppression State Error CS0102 The type 'cli' already contains a definition for '_baseUrl' ConsoleApp2 C:\Users\Developer\source\repos\ConsoleApp2\ConsoleApp2\obj\V2_JSON1Client.cs 614 Active Error CS0102 The type 'cli' already contains a definition for '_httpClient' ConsoleApp2 C:\Users\Developer\source\repos .... etc

.NET Version

6.0.202

Anything else?

Visual Studio 2022

info:

.NET SDK (reflecting any global.json):
Version: 6.0.202
Commit: f8a55617d2

Runtime Environment:
OS Name: Windows
OS Version: 10.0.19043
OS Platform: Windows
RID: win10-x64
Base Path: C:\Program Files\dotnet\sdk\6.0.202\

Host (useful for support):
Version: 6.0.4
Commit: be98e88c76

.NET SDKs installed:
5.0.301 [C:\Program Files\dotnet\sdk]
6.0.101 [C:\Program Files\dotnet\sdk]
6.0.202 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.1 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 6.0.4 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 2.1.30 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 2.2.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.1 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.4 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Using grpc.tools to generate c# code for proto message MetricConfigResponse.Schedule.Pattern results in compiler conflict on object.Equals(object?).

C:\Users\Victor\src\victlu-opentelemetry-dotnet\test\Benchmarks-Proto\obj\Debug\net5.0\opentelemetry\proto\metrics\experimental\MetricsConfigService.cs(846,27): warning CS0108: 'MetricConfigResponse.Types.Schedule.Types.Pattern.Equals' hides inherited member 'object.Equals(object?)'. Use the new keyword if hiding was intended. [C:\Users\Victor\src\victlu-opentelemetry-dotnet\test\Benchmarks-Proto\protobench.csproj] C:\Users\Victor\src\victlu-opentelemetry-dotnet\test\Benchmarks-Proto\obj\Debug\net5.0\opentelemetry\proto\metrics\experimental\MetricsConfigService.cs(888,34): error CS0102: The type 'MetricConfigResponse.Types.Schedule.Types.Pattern' already contains a definition for 'Equals' [C:\Users\Victor\src\victlu-opentelemetry-dotnet\test\Benchmarks-Proto\protobench.csproj] C:\Users\Victor\src\victlu-opentelemetry-dotnet\test\Benchmarks-Proto\obj\Debug\net5.0\opentelemetry\proto\metrics\experimental\MetricsConfigService.cs(893,25): error CS0102: The type 'MetricConfigResponse.Types.Schedule.Types.Pattern' already contains a definition for 'Equals' [C:\Users\Victor\src\victlu-opentelemetry-dotnet\test\Benchmarks-Proto\protobench.csproj]

In file proto\metrics\experimental\metrics_config_service.proto the string equals = 1 in the following message is the root cause:

message Pattern { oneof match { string equals = 1; // matches the metric name exactly string starts_with = 2; // prefix-matches the metric name } }

Hello Guys, How are you all? Hope You all Are Fine. Today I try to define the following Pair<A, B> class in C#, I get a compiler error. The compiler error is error CS0102: The type ‘Pair’ already contains a definition for ‘A’ in C#. So Here I am Explain to you all the possible solutions here.

Without Wasting your time, Lets start This Article to Solve This Error.

Today I try to define the following Pair<A, B> class in C#, I get a compiler error. The compiler error is error CS0102: The type ‘Pair’ already contains a definition for ‘A’ in C#

error CS0102: The type 'Pair<A, B>' already contains a definition for 'A' error CS0102: The type 'Pair<A, B>' already contains a definition for 'B'

How To Solve The generic type already contains a definition Error ?

Question: How To Solve The generic type already contains a definition Error ?
Answer: The name of a type parameter in the type_parameter_list of a class declaration shall differ from the names of all other type parameters in the same type_parameter_list and shall differ from the name of the class and the names of all members of the class.

Solution 1

As Per Theirs Document

The name of a type parameter in the type_parameter_list of a class declaration shall differ from the names of all other type parameters in the same type_parameter_list and shall differ from the name of the class and the names of all members of the class.

Meanwhile, you can’t get a type parameter the same name as another type parameter or a class member. Here, you have a type parameter called A and a property called A. In this example, the error message suddenly makes sense

class Broken<T> { public string T { get; set; } }

Summery

It’s all About this issue. Hope all solution helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which solution worked for you?

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