如何在颜色选择器对话框中更改颜色的Alpha通道？

Question

I've made a Color Picker in C#, but someone asked me to make an Alpha property. So far it works great, except for the part of the Alpha property itself.

The question is: How do I change the ColorDialog.Color.A by scrolling up and down a ScrollBar?

Answer 1

在ScrollBar类上使用ValueChanged事件。