CODEWITHSUNDEEP
c#asp.net-web-api
Ayobamilaye
Ayobamilaye

Reputation: 1573

ASP.NET Core Web API - The name 'WebApplication' does not exist in the current context WebApi

In ASP.NET Core-6 Web API, I have this code in Program.cs of the WebApi Project:

WebApi Program.cs:

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();

I got this error:

Error CS0103 The name 'WebApplication' does not exist in the current context WebApi

How do I resolve this?

Thanks

Upvotes: 5

Views: 18348

Answers (4)

AngelaG
AngelaG

Reputation: 755

Fully qualify it like this:

var builder = Microsoft.AspNetCore.Builder.WebApplication.CreateBuilder(args);

Upvotes: 16

RichIntellect
RichIntellect

Reputation: 291

This also happens if you create a project and the Project SDK is not a Web SDK

In your project file:

Incorrect:

<Project Sdk="Microsoft.NET.Sdk">

Correct:

<Project Sdk="Microsoft.NET.Sdk.Web">

Upvotes: 17

Trev
Trev

Reputation: 11

I had the same message but this disappeared after changing the TargetPackage from net7.0 to net6.0 in the cproj file

<TargetFramework>net6.0</TargetFramework>

Upvotes: 0

bencstrs
bencstrs

Reputation: 303

Usually this happens when you have updated a .Net < 5 app to .Net 6. The reason is that you have to enable ImplicitUsings in the .csproj file

Makes sure the property group for your .csproj file contains this line in it:

<ImplicitUsings>enable</ImplicitUsings>

Here is an example PropertyGroup from one of the recent projects where I upgraded from .Net Core 3.1 to .Net 6:

<PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>

Upvotes: 15

Related Questions