Solved

Upload-Resize-Crop Image In SQL Databse in Binary Format in ASP.Net using C#

Posted on 2009-04-11
4
815 Views
Last Modified: 2013-11-26
I want to upload the Multiple images at a time(on button click)(using flash uploder or any other) in SQL databse where the images saves in binary format.(Please not that I am not storing the images path in database) and also i want the images should be resized and crop before upload.
<email deleted>

Thanks!
Vikas.
0
Comment
Question by:SCALERCODE
  • 2
4 Comments
 
LVL 23

Expert Comment

by:Jens Fiederer
ID: 24129596
I should probably leave this to the admins, but please note that solutions are supposed to be posted right here on Experts Exchange - that way they can help more than one person.

You might want to be specific about the type of database you are using (do you mean SQLServer database?)
0
 
LVL 15

Expert Comment

by:oobayly
ID: 24130569
The page that handles the file upload post can get the InputStream for each file from the Request.Files object.

A method like this will take the inputStream and generate a byte array that contains the thumbnail data. It's then a simple matter of inserting the binary data into your database
    private byte[] GetThumbBytes(Stream inputStream, Size maxSize) {
      Bitmap original = new Bitmap(inputStream);
      double scale = Math.Min(maxSize.Width / original.Width, maxSize.Height, original.Height);
      Bitmap thumb = new Bitmap(original, (int)(scale * original.Width), (int)(scale * original.Height));
 
      // Save the thumb to a memorystream
      MemoryStream ms = new MemoryStream();
      thumb.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
      byte[] buff = ms.ToArray();
 
      original.Dispose();
      thumb.Dispose();
      ms.Dispose();
 
      return buff;
    }

Open in new window

0
 
LVL 15

Accepted Solution

by:
oobayly earned 500 total points
ID: 24133828
Minor mistake, the scale is calcualated incorrectly. The numerators have to be cast as double, else scale ends up being to the nearest integer which isn't ideal.
    private byte[] GetThumbBytes(Stream inputStream, Size maxSize) {
      Bitmap original = new Bitmap(inputStream);
      double scale = Math.Min((double)maxSize.Width / original.Width, (double)maxSize.Height / original.Height);
      Bitmap thumb = new Bitmap(original, (int)(scale * original.Width), (int)(scale * original.Height));
 
      // Save the thumb to a memorystream
      MemoryStream ms = new MemoryStream();
      thumb.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
      byte[] buff = ms.ToArray();
 
      original.Dispose();
      thumb.Dispose();
      ms.Dispose();
 
      return buff;
    }

Open in new window

0

Featured Post

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

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

In my previous two articles we discussed Binary Serialization (http://www.experts-exchange.com/A_4362.html) and XML Serialization (http://www.experts-exchange.com/A_4425.html). In this article we will try to know more about SOAP (Simple Object Acces…
Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

816 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

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now