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about image rotating

P: n/a
Hello all, how could I rotate a server side image in asp.net and show it in
web page? Thanks.

Jun 27 '08 #1
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5 Replies


P: n/a
Well, I'm not going to write the whole function for you, but you basically
need to create an *.aspx page that returns an image/gif. In the Load event,
you will simply use the classes in the System.Drawing namespace to rotate
it. If you have never created an *.aspx that returns an image/gif, you
basically use the Save() method of a Bitmap to output the image to the
Response.OutputStream like the following:

mybitmap.Save(Response.OutputStream, ImageFormat.Gif)

I'm not going to going into the other details of the steps you will need to
take, but most of them are reasonably simple, and if you can find a good
website I think you'll be able to figure it out. Good Luck!
--
Nathan Sokalski
nj********@hotmail.com
http://www.nathansokalski.com/

"Michael" <Mi**********@noemail.noemailwrote in message
news:OK**************@TK2MSFTNGP02.phx.gbl...
Hello all, how could I rotate a server side image in asp.net and show it
in web page? Thanks.

Jun 27 '08 #2

P: n/a
Hi Michael,

From your description, you're wantting to display some image files(at
server-side) as rotated format on ASP.NET web page, correct?

If so, I think the proper means is use the .NET GDI+ classes to perform
transforming on the certain images. You can generate an rotated image
stream and output it on page(via an httphander or page...)

Here are some good web articles which has introduced some code and examples
on GDI+ image transformation:

#Matrix Transformation of Images in C#, using .NET GDI+
http://www.codeproject.com/KB/GDI-pl...formation.aspx

#Image Transformation in C# with GDI+
http://www.c-sharpcorner.com/UploadF...04121920050548
03AM/Transformations04.aspx

#NET and GDI+: Transforming Images on the Server - Introduction and
Examples, Part II...
http://www.dotnetjohn.com/articles.aspx?articleid=115

Also, if you're not familar with emiting image stream via httphandler in
ASP.NET, here are some tech articles on this:

http://www.codeproject.com/KB/web-im...umbnailer.aspx

http://www.c-sharpcorner.com/UploadF...rImages1115200
5062705AM/HTTPHandlersForImages.aspx

http://msdn.microsoft.com/en-us/magazine/cc163988.aspx

Hope this helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead
Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
ms****@microsoft.com.

==================================================
Get notification to my posts through email? Please refer to
http://msdn.microsoft.com/subscripti...ult.aspx#notif
ications.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) at
http://msdn.microsoft.com/subscripti...t/default.aspx.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
>Reply-To: "Michael" <Mi**********@noemail.noemail>
From: "Michael" <Mi**********@noemail.noemail>
Subject: about image rotating
Date: Tue, 24 Jun 2008 09:51:42 +0800
>
Hello all, how could I rotate a server side image in asp.net and show it
in
>web page? Thanks.

Jun 27 '08 #3

P: n/a
On Jun 24, 3:48 pm, stch...@online.microsoft.com (Steven Cheng [MSFT])
wrote:
Hi Michael,

From your description, you're wantting to display some image files(at
server-side) as rotated format on ASP.NET web page, correct?

If so, I think the proper means is use the .NET GDI+ classes to perform
transforming on the certain images. You can generate an rotated image
stream and output it on page(via an httphander or page...)

Here are some good web articles which has introduced some code and examples
on GDI+ image transformation:

#Matrix Transformation of Images in C#, using .NET GDI+http://www.codeproject.com/KB/GDI-pl...formation.aspx

#Image Transformation in C# with GDI+http://www.c-sharpcorner.com/UploadF...mations0412192...
03AM/Transformations04.aspx

#NET and GDI+: Transforming Images on the Server - Introduction and
Examples, Part II...http://www.dotnetjohn.com/articles.aspx?articleid=115

Also, if you're not familar with emiting image stream via httphandler in
ASP.NET, here are some tech articles on this:

http://www.codeproject.com/KB/web-im...umbnailer.aspx

http://www.c-sharpcorner.com/UploadF...dlersForImages...
5062705AM/HTTPHandlersForImages.aspx

http://msdn.microsoft.com/en-us/magazine/cc163988.aspx

Hope this helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msd...@microsoft.com.

==================================================
Get notification to my posts through email? Please refer tohttp://msdn.microsoft.com/subscriptions/managednewsgroups/default.asp...
ications.

Note: The MSDN Managed Newsgroup support offering is for non-urgent issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS) athttp://msdn.microsoft.com/subscriptions/support/default.aspx.
==================================================
This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
Reply-To: "Michael" <Michael_M...@noemail.noemail>
From: "Michael" <Michael_M...@noemail.noemail>
Subject: about image rotating
Date: Tue, 24 Jun 2008 09:51:42 +0800
Hello all, how could I rotate a server side image in asp.net and show it
in
web page? Thanks.
if you just want to rotate or flip it by the standard 90/180/270 then
you could try

System.Drawing.Image image =
System.Drawing.Image.FromFile(fileInPath);
image.RotateFlip(RotateFlipType.xxxxx);
image.Save(fileOutPath)
Jun 27 '08 #4

P: n/a
Thanks to everyone's response and informaton. Image.RotateFlip resolved the
issue.

"densial" <de*****@gmail.comwrote in message
news:89**********************************@i18g2000 prn.googlegroups.com...
On Jun 24, 3:48 pm, stch...@online.microsoft.com (Steven Cheng [MSFT])
wrote:
>Hi Michael,

From your description, you're wantting to display some image files(at
server-side) as rotated format on ASP.NET web page, correct?

If so, I think the proper means is use the .NET GDI+ classes to perform
transforming on the certain images. You can generate an rotated image
stream and output it on page(via an httphander or page...)

Here are some good web articles which has introduced some code and
examples
on GDI+ image transformation:

#Matrix Transformation of Images in C#, using .NET
GDI+http://www.codeproject.com/KB/GDI-pl...formation.aspx

#Image Transformation in C# with
GDI+http://www.c-sharpcorner.com/UploadF...mations0412192...
03AM/Transformations04.aspx

#NET and GDI+: Transforming Images on the Server - Introduction and
Examples, Part II...http://www.dotnetjohn.com/articles.aspx?articleid=115

Also, if you're not familar with emiting image stream via httphandler in
ASP.NET, here are some tech articles on this:

http://www.codeproject.com/KB/web-im...umbnailer.aspx

http://www.c-sharpcorner.com/UploadF...dlersForImages...
5062705AM/HTTPHandlersForImages.aspx

http://msdn.microsoft.com/en-us/magazine/cc163988.aspx

Hope this helps.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you.
Please
feel free to let my manager know what you think of the level of service
provided. You can send feedback directly to my manager at:
msd...@microsoft.com.

================================================= =
Get notification to my posts through email? Please refer
tohttp://msdn.microsoft.com/subscriptions/managednewsgroups/default.asp...
ications.

Note: The MSDN Managed Newsgroup support offering is for non-urgent
issues
where an initial response from the community or a Microsoft Support
Engineer within 1 business day is acceptable. Please note that each
follow
up response may take approximately 2 business days as the support
professional working with you may need further investigation to reach the
most efficient resolution. The offering is not appropriate for situations
that require urgent, real-time or phone-based interactions or complex
project analysis and dump analysis issues. Issues of this nature are best
handled working with a dedicated Microsoft Support Engineer by contacting
Microsoft Customer Support Services (CSS)
athttp://msdn.microsoft.com/subscriptions/support/default.aspx.
================================================= =
This posting is provided "AS IS" with no warranties, and confers no
rights.

--------------------
>Reply-To: "Michael" <Michael_M...@noemail.noemail>
From: "Michael" <Michael_M...@noemail.noemail>
Subject: about image rotating
Date: Tue, 24 Jun 2008 09:51:42 +0800
>Hello all, how could I rotate a server side image in asp.net and show it
in
>web page? Thanks.

if you just want to rotate or flip it by the standard 90/180/270 then
you could try

System.Drawing.Image image =
System.Drawing.Image.FromFile(fileInPath);
image.RotateFlip(RotateFlipType.xxxxx);
image.Save(fileOutPath)
Jun 27 '08 #5

P: n/a
Thanks for your quick reply Michael,

I'm glad that it helps you. If you need any further help, welcome to post
here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

--------------------
>Reply-To: "Michael" <Mi**********@noemail.noemail>
From: "Michael" <Mi**********@noemail.noemail>
>In-Reply-To:
<89**********************************@i18g2000prn. googlegroups.com>
>Subject: Re: about image rotating
Date: Tue, 24 Jun 2008 15:34:46 +0800
>
Thanks to everyone's response and informaton. Image.RotateFlip resolved
the
>issue.

"densial" <de*****@gmail.comwrote in message
news:89**********************************@i18g200 0prn.googlegroups.com...
>On Jun 24, 3:48 pm, stch...@online.microsoft.com (Steven Cheng [MSFT])
wrote:
>>Hi Michael,

From your description, you're wantting to display some image files(at
server-side) as rotated format on ASP.NET web page, correct?

If so, I think the proper means is use the .NET GDI+ classes to perform
transforming on the certain images. You can generate an rotated image
stream and output it on page(via an httphander or page...)

Here are some good web articles which has introduced some code and
examples
on GDI+ image transformation:

#Matrix Transformation of Images in C#, using .NET
GDI+http://www.codeproject.com/KB/GDI-pl...formation.aspx

#Image Transformation in C# with
GDI+http://www.c-sharpcorner.com/UploadF...mations0412192...
>>03AM/Transformations04.aspx

#NET and GDI+: Transforming Images on the Server - Introduction and
Examples, Part
II...http://www.dotnetjohn.com/articles.aspx?articleid=115
>>>
Also, if you're not familar with emiting image stream via httphandler in
ASP.NET, here are some tech articles on this:

http://www.codeproject.com/KB/web-im...umbnailer.aspx

http://www.c-sharpcorner.com/UploadF...dlersForImages...
5062705AM/HTTPHandlersForImages.aspx

http://msdn.microsoft.com/en-us/magazine/cc163988.aspx

Hope this helps.

Sincerely,

Steven Cheng
Jun 27 '08 #6

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