BD

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Data.SqlClient;

namespace bd
{
    public partial class Form1 : Form
    {
        private SqlConnection sqlConnection = null;
        private SqlDataAdapter adapter = null;
        private DataTable table;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string ConnectionString = @"Data Source=xxx.xxx.xxx.xxx;Initial Catalog=db22204;User ID=User000;Password=**********;Integrated Security=False";
            sqlConnection = new SqlConnection(ConnectionString);

            sqlConnection.Open();

            adapter = new SqlDataAdapter("SELECT concat(txtClientSurname, ' ', txtClientName, ' ', txtClientSecondName) as 'ФИО клиента', intAccountTypeId as 'Тип счета', datAccountBegin as 'Дата открытия', txtAccountNumber as 'Номер счета' FROM tblAccount, tblClient WHERE tblAccount.intClientId = tblClient.intClientId", sqlConnection);

            table = new DataTable();

            adapter.Fill(table);
            dataGridView1.DataSource = table;
            dataGridView1.AutoResizeColumns();

            sqlConnection.Close();
        }

        private void button1_Click(object sender, EventArgs e)
        {

        }
    }
}