ahh,, its my stupid mistake,, i accidently delete my handler.. Sorry guys
private void PrintDocument1_PrintPage(System.Object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
byte[] gambar = new byte[0];
gambar = (byte[])(dgv_ProductData.CurrentRow.Cells[5].Value);
MemoryStream ms = new MemoryStream(gambar);
Bitmap bm = new Bitmap(ms);
e.Graphics.DrawImage(bm, 0, 0);
}
private void btn_Print_Click(object sender, EventArgs e)
{
printPreviewDialog1.Document = printDocument1;
printPreviewDialog1.ShowDialog();
printDialog1.ShowDialog();
}