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Question : How to insert a single blob?
Hello,
I inserted a picture into an image field in SQL server using following query.
UPDATE dbo.Photo SET Document =
(SELECT * FROM
OPENROWSET(BULK 'C:\Pictures\Lighthouse.jp
g', SINGLE_BLOB) AS ORS)
When i render this image in an ASP.NET web page it works fine. I use this code block:
var photoQuery = (from inp in db.Photos
select new { Id = inp.ID, Document = inp.Document, Name = inp.ID });
foreach (var item in photoQuery)
{
Photo photo = new Photo();
byte[] picture = (byte[])(item.Document);
MemoryStream ms = new MemoryStream(picture);
System.Drawing.Image image = System.Drawing.Image.FromS
tream(ms);
photo.Listing_ID = item.Id;
photo.Name = item.Name.ToString();
using (var memoryStream = new MemoryStream())
{
image.Save(memoryStream, ImageFormat.Jpeg);
photo.Data = memoryStream.ToArray();
}
images.Add(photo);
}
until this point everything works fine.
but when i look in the field in SQL server i see a long binary hexidecimal string. These are the first few characters:
0xFFD8FFE000104A4649460001
0100000100
010000FFFE
003E43524
Now what i'm attempting to do is to copy that last piece of data as a string into the image field in SQL server. I test this by doing:
UPDATE dbo.tbl_InspectionPhoto set INP_Document =
'0xFFD8FFE000104A464946000
1010000010
0010000FFF
E003E43524
'
when i refresh my asp.net page, i get an error on System.Drawing.Image image = System.Drawing.Image.FromS
tream(ms):
The parameter is not valid.
Any help would be greatly appriciated.
Thanks in advance,
MA
Answer : How to insert a single blob?
Don't use quotes around the hex string. It is not a text string, but hex encoded binary data.
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