Databases
StackOverflow2013
Postsdbo
POSaving Image to MemoryStream- Generic GDI+ Error
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSaving Image to MemoryStream- Generic GDI+ Error
    primarykey
    data
    text
    <p>Overview of my application: On the client side, a series of snapshots are taken with a webcam. On submit, I want the images to be converted to a byte array, and have that byte array sent to a service I have written.</p> <p>My problem: I'm trying to save a single image to a <code>MemoryStream</code>, but it continues to break, spitting out the message, <strong><em>"A generic error occured in GDI+."</em></strong> When I dig deeper, I see that the exception is thrown when the MemoryStream's buffer position is at 54. Unfortunately, it's a <code>1.2 mb</code> photo. Here's the block of code:</p> <pre><code>// Create array of MemoryStreams var imageStreams = new MemoryStream[SelectedImages.Count]; for (int i = 0; i &lt; this.SelectedImages.Count; i++) { System.Drawing.Image image = BitmapFromSource(this.SelectedImages[i]); imageStreams[i] = new MemoryStream(); image.Save(imageStreams[i], ImageFormat.Bmp); /* Error is thrown here! */ } // Combine MemoryStreams into a single byte array (Threw this // in in case somebody has a better approach) byte[] bytes = new byte[imageStreams.Sum(s =&gt; s.Length)]; for(int i = 0; i &lt; imageStreams.Length; i++) { bytes.Concat(imageStreams[i].ToArray()); } </code></pre> <p>And here is my BitmapFromSource method</p> <pre><code>// Converts a BitmapSource object to a Bitmap object private System.Drawing.Image BitmapFromSource(BitmapSource source) { System.Drawing.Image bitmap; using (MemoryStream ms = new MemoryStream()) { BitmapEncoder encoder = new BmpBitmapEncoder(); encoder.Frames.Add(BitmapFrame.Create(source)); encoder.Save(ms); bitmap = new System.Drawing.Bitmap(ms); } return bitmap; } </code></pre> <p>A lot of what I have read about the Generic GDI+ Error points to a permissions issue, but I don't see how that would apply here, considering I'm not saving to the file system. Also, I've seen that this error can arise due to the MemoryStream closing before the image is being saved, but I also don't see how this would apply considering I create the MemoryStream immediately before I save the image. Any insight would be greatly appreciated.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAlexander
    1. USMr Jones
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POSaving Image to MemoryStream- Generic GDI+ Error
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. CO[SecurityException when calling Graphics.DrawImage](http://stackoverflow.com/questions/9185494/securityexception-when-calling-graphics-drawimage) Related maybe? Leads to this: [Common Problems with rendering Bitmaps into ASP.NET OutputStream](http://www.west-wind.com/weblog/posts/2006/Oct/19/Common-Problems-with-rendering-Bitmaps-into-ASPNET-OutputStream)
      singulars
      1. POSaving Image to MemoryStream- Generic GDI+ Error
      1. USM. Mennan Kara
    2. COAlso please have a look at this : **http://stackoverflow.com/questions/1044085/a-generic-error-occurred-in-gdi**
      singulars
      1. POSaving Image to MemoryStream- Generic GDI+ Error
      1. UShuMpty duMpty
    3. CO@MennanKara Your link solved my problem. Turns out the bitmap needs to be copied to a new bitmap before it can be saved. Seems redundant, but it worked. Please post your link as an answer and I will approve.
      singulars
      1. POSaving Image to MemoryStream- Generic GDI+ Error
      1. USMr Jones
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload