?
Solved

Changing the color of a drawn rectangle

Posted on 2007-12-04
3
Medium Priority
?
464 Views
Last Modified: 2013-12-16
Hi Experts,

   I have a user control (C# 2005 w/ .NET FW 2.0), which has a picture box. When the user control gets created for the first time, I draw a rectangle on top of it using the picture box' Graphics object and the FillRectangle (Brush, RectangleF) function (using a SolidBrush).  I have a public method, that's supposed to allow the user to change the rectangle's color.  My question is: How do I change the color of that existing rectangle? I tried saving the RectangleF object and just calling the FillRectangle function on it a second time using a different Brush color, but that returns a "Parameter is not valid" error.

Any help would be greatly appreciated.

Thanks,
axnst2
0
Comment
Question by:axnst2
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 96

Accepted Solution

by:
Bob Learned earned 2000 total points
ID: 20403610
You could use a private field value to store the selected color, and then call the Invalidate method for the PictureBox to fire the Paint event, and fill the rectangle in the Paint event handler, using the stored color for the SolidBrush.

Bob
0
 

Author Comment

by:axnst2
ID: 20404782
Thanks Bob,

   That was it...

~axnst2
0
 

Author Closing Comment

by:axnst2
ID: 31412595
Good Job!!!!
0

Featured Post

Learn by Doing. Anytime. Anywhere.

Do you like to learn by doing?
Our labs and exercises give you the chance to do just that: Learn by performing actions on real environments.

Hands-on, scenario-based labs give you experience on real environments provided by us so you don't have to worry about breaking anything.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
Suggested Courses

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question