ARTICLE

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

Posted by Hirendra Sisodiya Articles | GDI+ & Graphics March 24, 2011
In this article we will discuss how to rotate, flip and save an image.
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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:

Rotate1.jpg

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();

        }

 

  Rotate2.jpg

You can download source code for description.

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

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