DoubleBufferedSample.cs

using System;
using System.Data;
using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    private DataTable table = new DataTable();
    private MyDataGridView dataGridView1 = new MyDataGridView();
    private DataGridView dataGridView2 = new DataGridView();
    private BindingSource bindingSource1 = new BindingSource();
    private BindingSource bindingSource2 = new BindingSource();
    private SplitContainer splitContainer1 = new SplitContainer();
    private Label label1 = new Label();
    private Label label2 = new Label();

    private void FillTable()
    {
        for (int col = 0; col < 100; ++col)
            table.Columns.Add("Col_" + col);

        var rand = new Random();
        for (int row = 0; row < 1000; ++row)
        {
            var curRow = table.NewRow();
            for (int col = 0; col < 100; ++col)
            {
                curRow[col] = rand.Next(1, 1000);
            }
            table.Rows.Add(curRow);
        }
    }

    public Form1()
    {
        FillTable();
        // bindingSource
        bindingSource1.DataSource = table;
        bindingSource2.DataSource = table;

        // label1
        label1.AutoSize = true;
        label1.Dock = DockStyle.Top;
        label1.ForeColor = Color.Blue;
        label1.Text = "MyDataGridView";

        // label2
        label2.AutoSize = true;
        label2.Dock = DockStyle.Top;
        label2.ForeColor = Color.Red;
        label2.Text = "DataGridView";

        // splitContainer1
        splitContainer1.Dock = DockStyle.Fill;
        splitContainer1.Panel1.Controls.Add(label1);
        splitContainer1.Panel2.Controls.Add(label2);
        splitContainer1.SplitterDistance = Width / 2;

        // dataGridView1
        dataGridView1.DataSource = bindingSource1;
        dataGridView1.Dock = DockStyle.Fill;
        dataGridView1.AutoGenerateColumns = true;

        // dataGridView2
        dataGridView2.DataSource = bindingSource2;
        dataGridView2.Dock = DockStyle.Fill;
        dataGridView2.AutoGenerateColumns = true;

        // append controls
        splitContainer1.Panel1.Controls.Add(dataGridView1);
        splitContainer1.Panel2.Controls.Add(dataGridView2);
        splitContainer1.Panel1.Controls.Add(label1);
        splitContainer1.Panel2.Controls.Add(label2);
        Controls.Add(splitContainer1);

        // resize form
        Resize += (o, e) => splitContainer1.SplitterDistance = Width / 2;
        Width = 800;
        Height = 500;
    }
}

public class MyDataGridView : DataGridView
{
    public MyDataGridView()
    {
        DoubleBuffered = true;
    }
}

static class Program
{
    [STAThread]
    static void Main()
    {
        Application.Run(new Form1());
    }
}