I am getting back a image from SQL server as a byte[]. Can I use xsl transform to convert it into an actual image for a webpage? How, may I do so if this is possible?
Ok, so I got around via a recomendation by my coworker using:
return File(myImage.ImageBinary, "image/gif");
Your question is not clear. I can't see a relation between an image and an XSL transformation. Are you using an SVG image?
If you are storing something like a JPEG image, you could create an ASP.NET Handler that fetches that from DB as a byte[] and use Response.BinaryWrite method to stream that to the client.
Related
I need to convert the screenshot of the front panel of the application into a Base64 string to post it to a web API. The block diagram is:
I used a "base64_fast_encode" utility vi from the link
https://forums.ni.com/t5/Example-Programs/Fast-Base64-Encoder-Decoder-using-LabVIEW/ta-p/3503281
Please find the encoded base64 string file from the link:
https://fil.email/WFBxwWyr
I pasted the resultant encoded base64 string in the below website:
https://codebeautify.org/base64-to-image-converter#
And I observed that it is not decoded back to image.
Please suggest if there are any other utility vis to convert to base64. If not, suggest an alternative of doing it.
Thanks in advance.
What you are missing is converting the LabVIEW image data to a more generic image format that would be understood outside of the context of LabVIEW, such as by the CodeBeautify tool. All you need to do is convert Image Data using LV Image to PNG Data.VI to PNG before you encode it.
Using the below example, if I take the base64 encoded string output and use the CodeBeautify base64-to-image-converter tool, it does show the expected image.
I want to display a list of contacts inside a StandardListItem. The data is retrieved from sql with QArrayBytes representing the Image.
The StandardListItem accepts a title, status, description and an image. But setting the image is not working.
How to set the image bytes in QML inside the StandardListItem.
PS: I don't want to make a custom list item component
Thanks you,
You actually need to use "imageSource" not "image". You can see a working example here: https://developer.blackberry.com/cascades/documentation/device_platform/data_access/using_data_source.html
Been fighting that myself, take a look at this sample it uses the QlistDataModel I've been trying to modify it without much success... The documentation is pretty sucky they don't tell you much in there
My use case is pretty simple. I need to convert the PDFs to images.I tried using apache pdfbox and i am having some trouble in converting pdfs which contains scanned images. when i convert scanned image the image clarity is lost due to compression/scaling. So i was trying to extract the image data from the PDF and then store it. But the problem is i may get PDF files which will contain images and text in which case i would need to fallback to image conversion mode. The problem is how to differentiate between the pages/documents having only image and the ones with composite data. I was thinking i could use ProcSet defenition for this purpose but looks like it is marked as obsolete and non-reliable according to PDF specifications. Other possibility is to check all the objects linked to that page and see if it contains anything other than images. Please let me know if there is an easier way of doing this
Thanks
If your intention is convert pdf to image, It is better to use ImageMagick for that. If you use ImageMagick, there is a lot options to change the quality of the image. And converting pdf to image is pretty simple using ImageMagick.
I am working on iPad application in which i have to show PDF data into table. Firstly,I want to fetch PDF file content into NSString, how to achieve this. I tried a lot but i am unable to get it.
Thanks
You have to use Quartz2d.
Check this page of the Quartz 2D Programming Guide, it covers everything you need to open and parse a PDF file in iOS. Note that it is not a simple task, since there's no method to extract the full text in one line. You have to work with the data as an input stream, using a CGPDFScanner
I have one application that allows user to do various things like rotating and scaling an image and finally when the user clicks on save, the image should get saved on the server. Everything works out fine but the problem is since I am directly saving the WriteableBitmap after converting it to bytearray using WriteableBitmapEx, the saved image is also WriteableBitmap and so I am not able to view it using common Picture Viewer.
I want my image to be saved as a JPEG. How can I do this?
Hey Ankit, here is a sample by John Papa that shows how to save WriteableBitmaps to PNG's.
http://johnpapa.net/silverlight/saving-snapshots-to-png-in-silverlight-4-and-the-webcam/
He uses two options: http://imagetools.codeplex.com/
And: http://blogs.msdn.com/b/jstegman/archive/2008/04/21/dynamic-image-generation-in-silverlight.aspx
I would suggest the ImageTools route.