Uploading large files into sql database using c#.

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SQL-Server-2005

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Hi,

Could you please suggest me the best way to save the huge files in the database using c# without putting the load on memory.

At present i m reading the file into BinaryReader and reading it into chunks and sending it to the database. I which takes lots of memory space while execution. So could you please suggest me the best possible way to stream the data database without putting so much pressure on memory.

Thanks in advance
vallab

Posted 10-May-10 0:22am

Vvr15

Updated 18-Jun-20 12:27pm

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Christian Graus · Answer 1 · 2010-05-10T01:05:00

Solution 1

vvr15 wrote:
Could you please suggest me the best way to save the huge files in the database using c# without putting the load on memory.

you can't, with ASP.NET, as only one mechanism exists to upload a file in a web page. But with a client app, you could upload the file in chunks, so it doesn't all have to be in memory at once.

Posted 10-May-10 1:05am

Christian Graus

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Vvr15 10-May-10 7:39am

Can you provide the piece of code. Specially the file reading section in streams.

Chris Rokusek · Answer 2 · 2020-06-18T12:28:00

Solution 2

SQL server can read the file directly from the filesystem if the SP runs under someone with the bulkadmin server privilege. This bulk command worked for us:

update someTable
set FileData = (select * from openrowset(bulk ''' + @filepath + ''', single_blob) as blob)
where id = 1;

Posted 18-Jun-20 12:28pm

Chris Rokusek

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Maciej Los 19-Jun-20 2:08am

I doubt that OP is interested in answer after 10 years...
BTW: your code is sql injection vulnerable.