Change Persian numbers to English numbers

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2.18/5 (3 votes)

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Hi,
How can change Persian numbers to English numbers in vb.net?
When I read any Persian numbers from an excel file, I want to change them to English numbers.
Thanks.

Posted 18-Aug-14 5:18am

Javad Emsakpour

Updated 19-Aug-14 6:12am

Kschuler

v2

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Sergey Alexandrovich Kryukov 18-Aug-14 13:10pm

There are no Persian or English numbers, there are Persian and English numerals, that is, characters.
Now, as to the Persian numerals, the are either "Western Arabic numerals" or "Eastern Arabic numerals". Please see:
http://en.wikipedia.org/wiki/Western_Arabic_numerals,
http://en.wikipedia.org/wiki/Eastern_Arabic_numerals.
If those are what you mean, the are quite easy to convert... What did you try?
If not, what did you mean?
—SA

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-08-18T11:04:00

Let's assume you need to convert Eastern Arabic to Western.

Look for example, at this table:
http://persian.nmelrc.org/persianword/numbers.htm[^].

You can see that the code points go in the same order without the gaps, in both "Western" and "Eastern". This is nothing but a shift of 1728.
So, one of the ways to convert it:

C#

static readonly int easternToWesternShift =
    (int)'٠' - (int)'0'; // two zeros

static char EasternToWestern(char eastern) {
    return (char)(eastern - easternToWesternShift);
}

And the like… And so on…

—SA