In C# please, thank you.

Graphics (25%)

In Deitels Java programming book, chapter 4, there is this example:

This is perfect design using drawLine that draws many straight lines with the end points of lines moving along the x-axis and y-axis.

(15%) Write a C# program that generates the right side design of the above picture (with 4 corners).

(10%) Enhance Q7 with GUI to change number of lines, and also GUI to change the color(s) so that the 4 corners may be of different colors.