public RadForm1()
        {
            InitializeComponent();

            this.radGridView1.MouseDown += radGridView1_MouseDown;
            this.radGridView1.MouseMove += radGridView1_MouseMove;
            this.radGridView1.MouseUp += radGridView1_MouseUp;
        }

        private void radGridView1_MouseUp(object sender, MouseEventArgs e)
        {
            downLocation = Point.Empty;
        }

        private void radGridView1_MouseMove(object sender, MouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                int delta = e.Y - downLocation.Y;
                if (delta > 0)
                {
                    this.radGridView1.TableElement.VScrollBar.Value = Math.Min(this.radGridView1.TableElement.VScrollBar.Maximum - this.radGridView1.TableElement.VScrollBar.LargeChange - 1,
                        this.radGridView1.TableElement.VScrollBar.Value + this.radGridView1.TableElement.VScrollBar.SmallChange);
                }
                else
                {
                    this.radGridView1.TableElement.VScrollBar.Value = Math.Max(this.radGridView1.TableElement.VScrollBar.Minimum,
                        this.radGridView1.TableElement.VScrollBar.Value - this.radGridView1.TableElement.VScrollBar.SmallChange);
                }
            }
        }

        Point downLocation = Point.Empty;

        private void radGridView1_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                downLocation = e.Location;
            }
        }

        private void RadForm1_Load(object sender, EventArgs e)
        { 
            this.productsTableAdapter.Fill(this.nwindDataSet.Products);

            this.radGridView1.BestFitColumns();

            this.radGridView1.EnableKineticScrolling = false;
            this.radGridView1.TableElement.VScrollBar.SmallChange = 10;
        }