Question

What I try to accomplish is to read from a stream directly into a field/record in SQL Server.

It isn’t hard to save a file to SQL Server, there are plenty of examples on the interweb;
but I can’t find any example that doesn’t read the whole file into memory first.

e.g.:

byte[] data = BinaryReader.ReadBytes((int)filestream.Length);
cmd.Parameters.Add("@Data", SqlDbType.Image, data.Length).Value = data;

or something similar.

I could use SQL Server’s own commands but then I’d have to fiddle with rights for SQL Server to read from another machine/folder and I’d hope to keep it all in .NET business layer instead.

Answer 1

The only way your going to be able to do that is to loop reading chunks from your stream & issuing an update on the underlying table using UPDATE .WRITE or a FILESTREAM.

This should not require any more permissions than a regular update/insert.