SQL: Create Assembly::

Posted on 2013-11-18
Last Modified: 2013-11-19
Hello team,
There is a DLL that I am trying to create assembly for and  call from SQL server 2008 r2 and I am getting the following message:
Msg 6544, Level 16, State 1, Line 1
CREATE ASSEMBLY for assembly 'DLLTest' failed because assembly 'DLLTest' is malformed or not a pure .NET assembly. 
Unverifiable PE Header/native stub.

Open in new window

and the assembly creating statement is :

FROM 'C:\Users\jesraelo\Downloads\BergDataLink.DLL'

Open in new window

The following conditions are met:
> .Net 4.0
> Microsoft SQL Server 2008 R2 (RTM) - 10.50.1617.0 (X64)   Apr 22 2011 19:23:43   Copyright (c) Microsoft Corporation  Developer Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1)
> This DLL is currently is in use in multiple VB scripts of another application.

So, to create an assembly and call the DLL at this is an issue for me IN SQL that I am trying to figure out and any assistance and help will be appreciated.
Question by:John Esraelo
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 4
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39657053
Was BergDataLink.DLL written in .NET?

Author Comment

by:John Esraelo
ID: 39657170
I believe so, I have forwarded this question to the developer just to make sure I am accurate on this.

Author Comment

by:John Esraelo
ID: 39657590
Alright, have found out that it was being done in visual foxPro  VFP ..

I guess, it is safe to say .. " my goose is cooked.. "..   now what?
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39657604
I have never worked in FoxPro. You *might* be able to write a .NET wrapper around the VFP, but I am not certain.

Author Comment

by:John Esraelo
ID: 39657650
It may be the only way. I have not done that either.

So, how would that work.  I will make a wrapper, in C# for instance, that would call the VFP.DLL and then create an assembly in SQL for the wrapper?
LVL 75

Expert Comment

by:käµfm³d 👽
ID: 39657668

Author Comment

by:John Esraelo
ID: 39657680
that about sums it up..

now, I am going to learn how to make a DLL in c# that would accept the ARGs, creates object for the vfp dll, pass the args to VFP dll and get the results back and pass back to sql..

like we say...
marrona mia
LVL 75

Accepted Solution

käµfm³d   👽 earned 500 total points
ID: 39657691
Before you get too deep into it, I would suggest creating a small throw-away project that you can test with. In this way you won't spend too much time on it if it doesn't work. That is, unless your VFP project isn't that large to begin with.

Author Comment

by:John Esraelo
ID: 39657828
The VFP DLL has been created around 3 years ago and one of our applications has been using it to update the records in VFP from a VB calling process / module.  Therefore, I don't have to worry about anything on that VFP side.. the DLL is smart  enough to know which table we are updating/inserting, etc. ..
So, to make the short story longer, I can play with a table that is not used today in that vfp side and examine that by writing a small note or comments or something..
just to see if it works.

The problem is that I have been away from C# for over 5 years now.. so bit rusty..
currently looking into some info : see below

Author Closing Comment

by:John Esraelo
ID: 39659731
Thank you for the pointer and advice

Featured Post

Ransomware: The New Cyber Threat & How to Stop It

This infographic explains ransomware, type of malware that blocks access to your files or your systems and holds them hostage until a ransom is paid. It also examines the different types of ransomware and explains what you can do to thwart this sinister online threat.  

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…
In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
Via a live example, show how to shrink a transaction log file down to a reasonable size.
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.

740 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question