We help IT Professionals succeed at work.
Get Started

How to hash (MD5 or SHA1) a file with VB.NET

jcm4101
jcm4101 asked
on
2,659 Views
Last Modified: 2012-05-10
Hi experts..
I have a VB.NET application which imports a few csv files into a database nightly..
I need to ascertain if the file has changed from the previous nights import before I decide to import it or not.

I thought the easiest way would be to hash the file and store this hash in a table.
Then, each subsequent nightly import, I would simply hash the file, compare it with the hash of the file uploaded the previous night, if the hash's match, do nothing, if the hash's are different, perform the import..

So, can anyone poiont me in the right direction for hashing a file with VB.NET please??

Thanks in advance.

D
Comment
Watch Question
Top Expert 2010
Commented:
This problem has been solved!
Unlock 1 Answer and 5 Comments.
See Answer
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE