C#

DateTime d1 = new DateTime(2008, 5, 1, 23, 59, 0);
DateTime d2 = new DateTime(2008, 5, 2, 0, 0, 1);

if ((d2 - d1) > TimeSpan.FromDays(1))
{
    Console.WriteLine("hit");
}

//DateTime d1 = first date            
//DateTime d2 = second date
if (DateTime.Compare(d1.Date, d2.Date) == 0)
    {
     Console.WriteLine("Same Date");
    }

yourPictureBox.Image = yourImageList[imageToDisplay];

this.Size = Screen.PrimaryScreen.WorkingArea.Size;
this.Location = new Point(0, 0);

this.Size = Parent.ClientRectangle.Size;
this.Location = new Point(0, 0);

private void ChildFillClientArea()
{
    if (ActiveMdiChild !=null)
    {
        Form activeChild = ActiveMdiChild;
        Rectangle clientArea = Rectangle.Empty;
        foreach (Control control in this.Controls)
        {
            if (control is MdiClient) clientArea = control.ClientRectangle;
        }
        activeChild.Bounds = clientArea;
    }
}

MonitorRiscoResultadoFrm frmMonitor = new MonitorRiscoResultadoFrm();
frmMonitor.MdiParent = this;
frmMonitor.Show();
ChildFillClientArea();