C#

SetStyle(ControlStyles.UserPaint, true);<br />
SetStyle(ControlStyles.DoubleBuffer, true);<br />
SetStyle(ControlStyles.AllPaintingInWmPaint, true);<br />
<br />
private void timer1_Tick(object sender, System.EventArgs e)<br />
{<br />
  Invalidate();<br />
}<br />
<br />
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)<br />
{<br />
  Graphics g = e.Graphics;<br />
  ...<br />
}<br />

private void timer1_Tick(object sender, System.EventArgs e)<br />
{<br />
    panel1.Invalidate();<br />
}<br />
<br />
private void panel1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)<br />
{<br />
  Graphics g = e.Graphics;<br />
  ...<br />
}<br />

<br />
string currentPath;<br />
<br />
private void frmPicture_Load(object sender, System.EventArgs e)<br />
{<br />
  currentPath = @"D:\Image\1.jpg";<br />
  this.pictureBox1.Image = Image.FromFile(currentPath);<br />
}<br />
<br />
private void updateButton_Click(object sender, System.EventArgs e)<br />
{<br />
  if (File.Exists(currentPath))<br />
  {<br />
     string newPath = Application.StartupPath + @"\PatientImages\" + arrISN[index].ToString() + ext;<br />
     this.pictureBox1.Image = null;<br />
     File.Copy(currentPath, newPath, true);<br />
  }<br />
}<br />