I have the following error:
Program.cs(15,72): error CS1061: 'ConfigurationBuilder' does not contain a definition for 'AddJsonFile' and no accessible extension method 'AddJsonFile' accepting a first argument of type 'ConfigurationBuilder' could be found (are you missing a using directive or an assembly
The project is a dotnet core app, console application, using Azure Search SDK
The line of error is below:
using System;
using System.Linq;
using System.Threading;
using Microsoft.Azure.Search;
using Microsoft.Azure.Search.Models;
using Microsoft.Extensions.Configuration;
using Microsoft.Spatial;
namespace DemoSearchIndexer
{
class Program
{
static void Main(string[] args)
{
IConfigurationBuilder builder = new ConfigurationBuilder().AddJsonFile("appsettings.json");
IConfigurationRoot configuration = builder.Build();
Best Answer
The
AddJsonFile
extension method is available in NuGet:Microsoft.Extensions.Configuration.Json
When building an ASP.NET Core application, which usually references
Microsoft.AspNetCore.App
(or, historically,Microsoft.AspNetCore.All
), you get this "for free".When building a console application, or something that doesn't reference the metapackages, you need an explicit reference to
Microsoft.Extensions.Configuration.Json
.