fileupload insertion error

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Guys,

please help me with this, im having this error, when im trying to insert a file in my fileupload. It then prompts something, below is the code i wrote and the error message is on bold. the datatype i used for the productimg column is image.

row["prodcutimg"] = Fileuploadd1.FileName.ToString(); ----type of value has a mismatch with column type couldn't store <picture002,jpg> in productimg column. Expected type is Byte[]

Posted 8-Oct-13 5:50am

Member 10302214

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OriginalGriff · Accepted Answer · 2013-10-08T05:57:00

Solution 1

The error message is pretty explicit: it expects an array of bytes, and you are passing a string.
If you want to pass the file content, then you are doing the wrong thing anyway: that will only pass the name of the file, not the actual data the file contains.
Try:

C#

byte[] filedata = Fileuploadd1.FileBytes;
row["prodcutimg"] = filedata;

Posted 8-Oct-13 5:57am

OriginalGriff

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Member 10302214 8-Oct-13 12:17pm

Thanks for the answer sir, it helped. but in my datalist view, the image is not showing. it is only stated "System.Byte[]". What seems to be the problem?

OriginalGriff 8-Oct-13 12:34pm

Hah! That's actually how you did the insert to the DB. Now, answer this question: Have you ever heard of SQL Injection Attacks?
Because that is what you are risking every single time you do anything with your database...
How do I know? Simple: you are concatenating strings to form you SQL command, and I don;t need to see your code to know that, because it's also the source of this problem.
See here:
http://www.codeproject.com/Tips/465950/Why-do-I-get-a-Parameter-is-not-valid-exception-wh
It will explain what to do, and why.