How to make image editor tool in c#: Rotations of image

In the last four articles of this series we discussed how to load an image in our Windows form, resize an image, crop an image and how to set the brightness of an image; see:

Part1: Open an image

Part2: Resizing image

Part3: Cropping image

Part 4: brightness of image

This article is the next part of how to make an image editor C#.

In this article we will discuss how to rotate, flip and save an image.

Form Designer:

Put four buttons on a form like this:

Code:

We are using here the RotateFlip() method for rotating images; the RotateFlip method accepts a RotateFlipType enumeration that has these members (Ref: MDSN):

Rotate90FlipNone	Specifies a 90-degree clockwise rotation without flipping.
Rotate180FlipNone	Specifies a 180-degree clockwise rotation without flipping.
Rotate270FlipNone	Specifies a 270-degree clockwise rotation without flipping.
RotateNoneFlipX	Specifies no clockwise rotation followed by a horizontal flip.
Rotate90FlipX	Specifies a 90-degree clockwise rotation followed by a horizontal flip.
Rotate180FlipX	Specifies a 180-degree clockwise rotation followed by a horizontal flip.
Rotate270FlipX	Specifies a 270-degree clockwise rotation followed by a horizontal flip.
RotateNoneFlipY	Specifies no clockwise rotation followed by a vertical flip.
Rotate90FlipY	Specifies a 90-degree clockwise rotation followed by a vertical flip.
Rotate180FlipY	Specifies a 180-degree clockwise rotation followed by a vertical flip.
Rotate270FlipY	Specifies a 270-degree clockwise rotation followed by a vertical flip.
RotateNoneFlipXY	Specifies no clockwise rotation followed by a horizontal and vertical flip.
Rotate90FlipXY	Specifies a 90-degree clockwise rotation followed by a horizontal and vertical flip.
Rotate180FlipXY	Specifies a 180-degree clockwise rotation followed by a horizontal and vertical flip.
Rotate270FlipXY	Specifies a 270-degree clockwise rotation followed by a horizontal and vertical flip.

Generate a click event for all four buttons and try to apply these code snippets:

    private void btnRotateLeft_Click(object sender, EventArgs e)

        {

               PictureBox1.Image.RotateFlip(RotateFlipType.Rotate90FlipNone);

               PictureBox1.Refresh();

        }

 

        private void btnRotateRight_Click(object sender, EventArgs e)

        {

            PictureBox1.Image.RotateFlip(RotateFlipType.Rotate270FlipNone);

        PictureBox1.Refresh();

        }

 

        private void btnRotateHorizantal_Click(object sender, EventArgs e)

        {

            PictureBox1.Image.RotateFlip(RotateFlipType.RotateNoneFlipX);

        PictureBox1.Refresh();

        }

 

        private void btnRotatevertical_Click(object sender, EventArgs e)

        {

            PictureBox1.Image.RotateFlip(RotateFlipType.RotateNoneFlipY);

        PictureBox1.Refresh();

        }

 

 

You can download source code for description.

One more thing; the RotateFlip method rotates the image clockwise.