private void RotateButton_Click(object sender, EventArgs e)
{
Image image = PictureBox1.Image;
int angle = int.Parse(angleField.Text);
image = imageOperation.RotateImage(image, angle);
PictureBox1.Image = image;
}
private void RotateButton_Click(object sender, EventArgs e)
{
Bitmap image = ConvertToBitmap(PictureBox1.Source as BitmapSource);
int angle = int.Parse(angleField.Text);
image = imageOperation.RotateImage(image, angle);
PictureBox1.Source = BitmapToImageSource(image);
}