Class

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data;
using System.Data.OleDb;

namespace Prasetiyo
{
    public class tyo
    {
        public static OleDbConnection con;
        public static OleDbCommand cmd;
        public static OleDbDataReader dtr;

        public static OleDbDataAdapter dapasien;
        public static DataTable tblpasien = new DataTable();
        public static OleDbDataAdapter dadokter;
        public static DataTable tbldokter = new DataTable();

        public static OleDbDataAdapter daadm;
        public static DataTable tbladm = new DataTable();

        public static OleDbConnection konek_db()
        {
            OleDbConnection con = new OleDbConnection
            ("provider=microsoft.ace.oledb.12.0;data source=Dbklinik.accdb");
            con.Open();
            return con;
        }
    }
}