实例：DataGridView显示数据

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using DevExpress.XtraEditors;
using System.Data.SqlClient;
using System.Configuration;

namespace WindowsApplication1
{
    public partial class XtraForm1 : DevExpress.XtraEditors.XtraForm
    {
        public XtraForm1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string customers = "select * from Customers";
            using (SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["northwind"].ConnectionString))
            {

                DataSet dt = new DataSet();
                SqlDataAdapter da = new SqlDataAdapter(customers, con);
                da.Fill(dt, "Customers");
                dataGridView1.AutoGenerateColumns = true;
                dataGridView1.DataSource = dt;
                dataGridView1.DataMember = "Customers";
            }
        }
    }
}