Solved

Crop Image using VB.Net

Posted on 2009-05-19
4
903 Views
Last Modified: 2013-11-08
Hi to all,

I need to crop images based on the X and Y value. I also have the width and height.

How would I go about in doing that?

Thanks
0
Comment
Question by:ALawrence007
[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
  • 2
4 Comments
 
LVL 39

Accepted Solution

by:
abel earned 500 total points
ID: 24421546
I took a code snippet I used for a similar question here at EE recently and adjusted it a bit. Here you go, Picture1 is a Picture object on your form:

Dim bmpTemp As New Bitmap(Picture1.Image)
Dim graph As Graphics = Graphics.FromImage(bmpTemp)
 
' rectangle you want to cut out '
Dim rect As New Rectangle(10, 10, 100, 100)
 
' clip / cutout image '
graph.DrawImageUnscaledAndClipped(Picture1.Image, rect)
 
' put back into image, you may need to erase it first '
Picture1.Image = bmpTemp

Open in new window

0
 

Author Comment

by:ALawrence007
ID: 24422008
Abel,

I tried the code you supplied, but all it does is display the original image to me. am I missing something?

Thanks
0
 

Author Closing Comment

by:ALawrence007
ID: 31582972
Abel,
I got it working in the end.

Thanks
0
 
LVL 39

Expert Comment

by:abel
ID: 24425054
> but all it does is display the original image to me. am I missing something?
You either missed to clear and redraw the image, or to paint something else (a background) in the parts you did not cover, otherwise the original image stays put. You can also use a different Picture control as a target to see how it works.

Good to hear you got it working. :)
0

Featured Post

How our DevOps Teams Maximize Uptime

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us. Read the use case whitepaper.

Question has a verified solution.

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

More often than not, we developers are confronted with a need: a need to make some kind of magic happen via code. Whether it is for a client, for the boss, or for our own personal projects, the need must be satisfied. Most of the time, the Framework…
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …

705 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