Question

58

Convert JavaScript to C#

rated 0 times [ 65] [ 7] / answers: 1 / hits: 20440 / 9 Years ago, thu, june 18, 2015, 12:00:00

How to convert this JavaScript to C#?

<script>

  function zeroPad(num, places) {

    var zero = places - num.toString().length + 1;

    return Array(+(zero > 0 && zero)).join(0) + num;

  }



    var accum = 0;

    var pin = parseInt(form.mac.value.replace(/:/g, '').slice(-6), 16) % 12000;

    var p = pin;

    while (pin)

      accum = (((accum + (3 * (pin % 10))) | 0) + (((pin / 10) | 0) % 10)) | 0, pin = ((pin / 100) | 0);

    accum = ((10 - accum % 10) % 10);

    form.pin.value = (zeroPad(p, 7) +  + accum);

  }

</script>

Please explain me this line in details?

parseInt(form.mac.value.replace(/:/g, '').slice(-6), 16) % 12000;

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moriah

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2 Years ago

answered 9 Years ago samaraanandah · Accepted Answer

I believe start-to-finish code conversions are a bit out of scope of Stack Overflow. If you posted your non-working C# conversion attempt and asked where it went wrong, I'm sure you'd get a much quicker answer to your first question.

As for your second question:

parseInt(form.mac.value.replace(/:/g, '').slice(-6), 16) % 12000;

translates to:

// Gets some mac address from some object outside the code you posted

var MACAddrString = form.mac.value;

// Delete the :'s between MAC address bytes

MACAddrString = MACAddrString.replace(/:/g, '');

// Take the last 3 bytes (6 hex digit symbols)

MACAddrString = MACAddrString.slice(-6);

// Parse the hex string to a number. Second argument indicates base 16.

var MACAddrInt = parseInt(MACAddrString, 16);

// Calculate the pin

var pin = MACAddrInt % 12000;