how to change transparency of a color in c#

Question

I am using SSRS reportviewer to generate a report using objects. In my program, I am asking the user to input a string of commonly known colors such as \"Red\", \"<

Answer 1

There is a method that does exactly what you need Color.FromArgb(int alpha, Color baseColor).

Valid alpha values are 0 through 255. Where 255 is the most opaque color and 0 a totally transparent color.

Use example

Color newColor = Color.FromArgb(newAlpha, mycolor);