/// <summary>
        /// Load pic from file.
        /// </summary>
        private void LoadPicture()
        {
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                // MessageBox.Show(openFileDialog1.FileName);
                pictureBox1.ImageLocation = openFileDialog1.FileName;
            }
            else
            {
                MessageBox.Show("User Canceled.");
            }
        }