使用 Npgsql.dll 链接 PostgreSQL 数据库

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using Npgsql;
using NpgsqlTypes;

namespace ConsoleApplication3
{
class Program
{
static void Main(string[] args)
{
using (var conn = new NpgsqlConnection("Host=192.168.1.12;Username=postgres;Password=123456;Database=postgres"))
{
conn.Open();
using (var cmd = new NpgsqlCommand())
{
cmd.Connection = conn;
cmd.CommandText = "SELECT * FROM \"Teacher\";";
using (var reader = cmd.ExecuteReader())
{
while (reader.Read())
{
string id = reader["id"].ToString();
string name = reader["name"].ToString();
Console.WriteLine(id+"   "+name);
}
Console.ReadKey();
reader.Close();
}
}
}
}
}
}