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Using #Postgres from .NET Core

This little “Hello World” of Postgres is a simple application in .NET that accesses the CRT.SH certifiate database to list all known Certificate Authorities.

The CRT.SH database is open to all clients thanks to Sectigo.

TL;DR; Here is the Github repo https://github.com/infiniteloopltd/HelloWorldPostgres2

using System;
using Npgsql; // Install-Package Npgsql -Version

namespace HelloPostgres
    class Program
        static void Main(string[] args)
            const string connString = "Host=crt.sh;Username=guest;Password=certwatch;Database=certwatch";
            var conn = new NpgsqlConnection(connString);
            // List all certificate authorities
            var cmd = new NpgsqlCommand("select name from ca", conn);
            var reader = cmd.ExecuteReader();
            while (reader.Read())

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