Tag Archives: C#

Draw a radar chart in C#

A radar chart shows measurements along several axes that all radiate out from a common center. This lets you compare several properties for different objects at the same time. in a way, you can think of a radar chart as … Continue reading

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Revised: Graph world total COVID-19 cases, deaths, and recoveries in C#

This post revises the example Graph world total COVID-19 cases, deaths, and recoveries in C#. Ulrich Rosin left a comment on that post. He added a seven-day average. He also displayed tick marks for the beginning of each month instead … Continue reading

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Create button images in WPF and C#

It seems like I’m constantly building programs like this one to create simple button images that I can use in other programs. This example uses XAML code to create some simple button images. The program’s code then saves those images … Continue reading

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Overlay parts of images in C#

My previous post Brighten pixels in an image in C# lets you brighten certain pixels in an image. Unfortunately is often brightens pixels outside of the area that you want to modify. For example, in the left side of the … Continue reading

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Brighten pixels in an image in C#

Sometimes when I take a picture, the poor lighting makes some pixels come out less brightly than I would like. For example, in the picture on the right the red raspberries aren’t very red. This example lets you brighten pixels. … Continue reading

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Perform binary contrast enhancement more quickly in C#

The example Perform binary contrast enhancement interactively in C# lets you convert an image into completely black and white pixels depending on their brightness. Pixels that are brighter than a given cutoff value are converted into white. Those that are … Continue reading

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Save a RichTextBox image in C#

My post Get the image of a control or form, or a form’s client area in C# uses a control’s DrawToBitmap method to make it draw itself onto a bitmap. Unfortunately the RichTextBox control does not support that method. Another … Continue reading

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Expand a ComboBox when the user presses Enter in C#

A ComboBox control’s DropDownStyle property determines how it lets the user select values. The three possible DropDownStyle values are: Simple – The ComboBox displays a text box (where the user can type a value) and a list (where the user … Continue reading

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Make a blended composite image in C#

The other day I wanted to do something that all of us do from time to time: make a composite image with the Eye of Sauron on top of another picture. This turned out to be a bit more complicated … Continue reading

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Crop scaled images to a desired aspect ratio in C#

I often need to crop images and sometimes I want a specific aspect ratio. (In case you haven’t heard this term before, the aspect ratio is the ratio of the image’s width to height. As an equation, it’s width / … Continue reading

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