EDSDKLib : JPG to pictureBox1.Image dont work !

Posted on 2008-10-28
Last Modified: 2012-06-21
For my first use of EDSDK lib, i want to load a JPG file with this library on a C# pictureBox.
This dont work, at the line : pictureBox1.Image = Image.FromStream(readStream);  i have error message  (parameter is not valid).

I have try UNSAFE, METAFILE ... but nothing work.
See attache code file here.

Thanks in advance.

Question by:lgc5800
  • 2
  • 2

Expert Comment

ID: 22823145
I am not familiar with that library but try this:

UnmanagedMemoryStream readStream = new UnmanagedMemoryStream((byte*)(void*)fs.ToPointer(), streamLength, streamLength, FileAccess.Read);


UnmanagedMemoryStream readStream = new UnmanagedMemoryStream((byte*)fs, streamLength, streamLength, FileAccess.Read);

Author Comment

ID: 22826165
mac-will, i have tested but dont work. Thank you

Expert Comment

ID: 22830491
Just to make sure it is a valid JPEG why don't you try copying the unmanaged stream to the managed heap. (Marshal.Copy)

Accepted Solution

lgc5800 earned 0 total points
ID: 22848524
I have found, and this work fine .
I use stream to take the JPG from Camera and save it to folder on my PC and then
assign it to the picturebox.

Thanks everyone

EDSDK.EdsCreateFileStream(System.IO.Path.Combine(Application.StartupPath, ObjectInfo.szFileName), FileDisp, FileAccess, out StreamRef);

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Summary: Persistence is the capability of an application to store the state of objects and recover it when necessary. This article compares the two common types of serialization in aspects of data access, readability, and runtime cost. A ready-to…
It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
Need to grow your business through quality cloud solutions? With everything required to build a cloud platform and solution, you may feel like the distance between you and the cloud is quite long. Help is here. Spend some time learning about the Con…

929 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

15 Experts available now in Live!

Get 1:1 Help Now