EF Core with Postgres connection string error - asp.net-core

Question

I am trying to use ASP.net Core along with postgres for the very first time. I was following (http://dotnetthoughts.net/using-postgresql-with-aspnet-core/) this blog post to create my first migration. I already created a database in my posgresSQL called asp_api_test.
My dotnet ef migrations add Initial was successful. However when I ran dotnet ef database update I ran into error Format of the initialization string does not conform to specification starting at index 0
My appsettings.json:
{
"ConnectionStrings": {
"DataAccessPostgreSqlProvider": "Host=localhost;Username=postgres;Password=root;Database=asp_trial_api;Pooling=true;"
},
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Debug",
"System": "Information",
"Microsoft": "Information"
}
}
}
I am guessing my connection string is incorrect.
My startup.cs:
public void ConfigureServices(IServiceCollection services)
{
// Add framework services.
services.AddApplicationInsightsTelemetry(Configuration);
services.AddDbContext<WebAPIDataContext>(options => {
options.UseNpgsql("DataAccessPostgreSqlProvider", b => b.MigrationsAssembly("New_Api"));
});
services.AddMvc();
}
My project.json:
{
"dependencies": {
"Microsoft.NETCore.App": {
"version": "1.0.0",
"type": "platform"
},
"Microsoft.AspNetCore.Mvc": "1.0.0",
"Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
"Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
"Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
"Microsoft.Extensions.Configuration.FileExtensions": "1.0.0",
"Microsoft.Extensions.Configuration.Json": "1.0.0",
"Microsoft.Extensions.Configuration.CommandLine": "1.0.0",
"Microsoft.Extensions.Logging": "1.0.0",
"Microsoft.Extensions.Logging.Console": "1.0.0",
"Microsoft.Extensions.Logging.Debug": "1.0.0",
"Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
"Microsoft.EntityFrameworkCore": "1.0.0",
"Microsoft.EntityFrameworkCore.Design": "1.0.0-preview2-final",
"Microsoft.EntityFrameworkCore.Tools": {
"version": "1.0.0-preview1-final",
"imports": [
"portable-net45+win8+dnxcore50",
"portable-net45+win8"
]
},
"Npgsql.EntityFrameworkCore.PostgreSQL": "1.0.0",
"Microsoft.ApplicationInsights.AspNetCore": "2.0.0"
},
"tools": {
"Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
"Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final"
},
"frameworks": {
"netcoreapp1.0": {
"imports": [
"dotnet5.6",
"portable-net45+win8"
]
}
},
"buildOptions": {
"emitEntryPoint": true,
"preserveCompilationContext": true
},
"runtimeOptions": {
"configProperties": {
"System.GC.Server": true
}
},
"publishOptions": {
"include": [
"wwwroot",
"**/*.cshtml",
"appsettings.json",
"web.config"
]
},
"scripts": {
"postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
}
}
What am I doing wrong?

Answer 1

I updated to following-
appsettings.js:
{
"Data": {
"DefaultConnection": {
"ConnectionString": "Host=localhost;Username={{postgres}};Password={{root}};Database={{asp_trial_api}}"
}
},
"Logging": {
"IncludeScopes": false,
"LogLevel": {
"Default": "Debug",
"System": "Information",
"Microsoft": "Information"
}
}
}
and in my startup.cs:
services.AddDbContext<WebAPIDataContext>(options => {
options.UseNpgsql(Configuration["Data:DefaultConnection:ConnectionString"]);
});