Variable is Int64 type but get error System.OverflowException

Hi

I'm trying to do:

        Dim MyNumber As Integer
        Dim Long_Number As Int64
        MyNumber = 407,414
        Long_Number = MyNumber * 1024 * 1024
      ' Result is : 437,690,302,464
      
But got this error:

      System.OverflowException: Arithmetic operation resulted in an overflow.

It is not supposed that a long type number can store up to 9,223,372,036,854,775,807 ?

Also I try to do this:

        Long_Number = CType(MyNumber * 1024 * 1024, Int64)

But got this error: Long_Number = 0
Desperate34Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

m_larson_33Commented:
in your
Long_Number = MyNumber * 1024 * 1024
calculation, try casting the MyNumber to Int64, otherwise I suspect the right side of this equation is by default cast to Integer.  You have Integer * 1024 * 2024, which is cast to Integer, but is too big.

0
Bob LearnedCommented:
Try using Decimal.

Bob
0
m_larson_33Commented:
This works

        Dim MyNumber As Integer
        Dim Long_Number As Int64
        MyNumber = 407,414
        Long_Number = CType(MyNumber, Int64) * 1024 * 1024
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
ASP.NET

From novice to tech pro — start learning today.