Personally, I'd make an interface... let's call it IFilterable with a required method let's call Filter.


public interface {
bool Filter( );
}


The each object in the collection could...

You still need to set up your methods accordingly, but I find using C/C++ LoadLibrary and GetProcAddress to get the other native code and then calling the calling code with C++/CLI is much easier way...

Assuming the user your running as has access to the remote server via a windows share, you can just use System.IO.File.Copy to move files. It's really that easy.
If you need to do FTP, it could be...

Check the way your decimal columnis defined in SQL server. It's possible you've defined it to not allow values >= 1.0. Use MSDN to reference how to properly specify the column.

Do the same check...

How are you doing the file compare, it is entirely based on path + filename?

CLR Managed code can call methods in another DLL via P/Invoke, but I recommend not doing that and instead having the native portion of you code handle dealing with other unmanaged code blocks.
...

The basics are there but a few suggestions for you:


using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.IO;

public class Program {

Is createMATLABThread managed or native? If it's managed, you need to create a delegate to pass.

Delegates are manage codes version of function pointers. So, I don't think you're getting from...

Good catch on the .lib file, after using C# for a while you tend to forget about stuff like that.

I don't have any where to point you for C++/CLI information other than MSDN. I've learned mostly...

Look at these two pieces of code, they mix managed and unmanaged just fine. More than likely you've not included a header file that you need in order to compile with managed code. make sure that you...

You'd be better off (if possible) creating a mixed managed/native DLL in C++/CLI (http://msdn.microsoft.com/en-us/magazine/cc163681.aspx) and adding that DLL as a reference to your C# project.