Category Archives: image processing

Combine images in rows and columns in C#

Posted on February 10, 2018 by RodStephens

I just finished my latest book WPF 3d, Three-Dimensional Graphics with WPF and C# and I wanted to combine images showing samples from the book into a single image. You can use a program such as MS Paint to do … Continue reading →

Posted in algorithms, drawing, graphics, image processing | Tagged algorithms, C#, C# programming, combine images, drawing, example, example program, graphics, image processing, Windows Forms programming | 1 Comment

Make a button display the picture beneath slightly grayed it in C#

Posted on November 1, 2017 by RodStephens

The example Make a button display the picture beneath it in C# shows how to make a button display the picture that lies below it. Unfortunately, the button only adds a border as decoration and the border doesn’t have a … Continue reading →

Posted in controls, graphics, image processing | Tagged button images, button pictures, buttons, C#, C# programming, controls, example, example program, graphics, image processing, images, picture below button, Windows Forms programming | Leave a comment

Make a button display the picture beneath it in C#

Posted on October 31, 2017 by Rod Stephens

This example makes a button display copies of the picture on which it sits, making it appear that the button is part of the underlying image. The key to this example is the following SetButtonBackground method. // Make the Button … Continue reading →

Tile a PictureBox in C#

Posted on September 20, 2017 by RodStephens

If you set a form’s BackgroundImageLayout property Tile, then the control fills itself with copies of its background image. Strangely the PictureBox control does not have a corresponding Tile property. This example shows one way you can tile images on … Continue reading →

Posted in drawing, graphics, image processing | Tagged C#, C# programming, drawing, example, example program, graphics, image processing, picture box, PictureBox, TextureBrush, tile, tile image, Windows Forms programming | Leave a comment

Change image resolution in C#

Posted on September 1, 2017 by RodStephens

This example shows how to change an image’s resolution. It’s another example I created to help while writing books. Computers usually work with images that have a resolution of 96 pixels per inch (PPI). Printers and publishers often require images … Continue reading →

Posted in image processing | Tagged C#, C# programming, change image resolution, change resolution, dots per inch, DPI, example, example program, image processing, image resolution, pixels per inch, PPI, resolution, Windows Forms programming | 1 Comment

Use the mouse wheel to scale an image in C#

Posted on August 7, 2017 by RodStephens

This example lets you use the mouse wheel to zoom in and out on an image. To use the mouse wheel, the program needs to catch the MouseWheel event. Unfortunately that event isn’t listed in the Form Designer so you … Continue reading →

Posted in events, graphics, image processing | Tagged C#, C# programming, events, example, example program, graphics, image processing, mouse wheel, scale, Windows Forms programming, zoom | Leave a comment

Save several images into Access in C#

Posted on May 12, 2017 by Rod Stephens

The example Save images in an Access database in C# includes an Access database. Unfortunately if you save several images into the database and then open the database in Access, Access removes the images. It just doesn’t seem to understand … Continue reading →