Decent image control

[Bob]

Hi there,

I need to show an image centered on a form. That's easy,
use a Picturebox... problem is the images may be
different sizes, and I need to resize to show the image
with the correct aspect ratio (ie: height vs width)...
sometimes the image will be too big to fit on the form so
then I'd like scrollbars... I need like a "shrink/stretch
to fit" method which understands the aspect ratio bit....

Is it me or is the picturebox control pretty useless...?

Can anybody suggest a way of achieving what I want with
standard .Net controls... or am I going to have to
subclass the picturebox (or make my own version)...?

Any help appreciated...

Cheers

 

[Jason Dorie]

Could you put the PictureBox control inside a Panel control? The panel
should allow you to scroll when the controls inside it are larger than its
client area.

Jason Dorie

 

[Justin Weinberg]

Michael Gold has an article on C# Corner showing a good implementation of a
zoomable, scrollable picturebox.

http://www.c-sharpcorner.com/Graphics/ScrollablePictureBox.asp

We used a slight modification on his example for the export image
functionality of GDI+ Architect with much success.

 

[Herfried K. Wagner [MVP]]

I need to show an image centered on a form. That's easy,
use a Picturebox... problem is the images may be
different sizes, and I need to resize to show the image
with the correct aspect ratio (ie: height vs width)...
sometimes the image will be too big to fit on the form so
then I'd like scrollbars... I need like a "shrink/stretch
to fit" method which understands the aspect ratio bit....

Is it me or is the picturebox control pretty useless...?

Can anybody suggest a way of achieving what I want with
standard .Net controls... or am I going to have to
subclass the picturebox (or make my own version)...?

You can add the picturebox control to a panel control with 'AutoScroll'
= 'True'. If the pixturebox gets larger than the panel, scrollbars will
be showed. The picturebox provides a 'SizeMode' property which allows
you to specify the size mode.

 

[Bob Powell [MVP]]

The GDI+ FAQ has an article on how to display an image in its original
aspect ratio centered on a form or control. It would be easy to adapt this
to a control that would do what you need.

--
Bob Powell [MVP]
C#, System.Drawing

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