Denso BHT-200QW Spécifications télécharger pdf (Page 131)

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When CD

type is A(EAN (JAN) or UPC):

This function identifies the code type (EAN or UPC) based upon the data length (number of

digits) as shown below.

If the data length is other than 13, 8, or 7, this function returns "0" and throws an exception.

No. of Digits in Barcode Data Barcode type

13 EAN-13 (JAN-13), UPC-A

8 EAN-8 (JAN-8)

7 UPC-E

To check whether the CD type is correct, pass a piece of barcode data with a CD to the

Scanner.GetChkDigit method as shown below. If the returned value is equal to the CD,

then the CD is correct.

[VB]

If (Scanner.GetChkDigit("49400458", "A") = Asc("8")) Then

Console.WriteLine ("CD OK")

End If

[C#]

UnicodeEncoding encode = new UnicodeEncoding();

if (Scanner.GetChkDigit("49400458", 'A') == (int)encode.GetBytes("8")[0]) {

Console.WriteLine ("CD OK");

}

To append a CD to the barcode data, pass a piece of barcode data with a dummy character

appended to the Scanner.GetChkDigit method as shown below. The returned value will be

the CD. Replace the dummy character with the returned value.

[VB]

Dim origData As String = "4940045"

Dim digit As Integer = Scanner.GetChkDigit(origData+"0", "A")

Console.WriteLine("CD = {0}", origData + New String(Chr(digit), 1))

[C#]

string origData = "4940045";

int digit = Scanner.GetChkDigit(origData+"0", 'A');

byte[] digitByteArray = {(byte)digit};

ASCIIEncoding encode = new ASCIIEncoding();

Console.WriteLine("CD = {0}", origData + encode.GetString(digitByteArray, 0, 1));

Result

> CD = 49400458

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Denso BHT-200QW Spécifications Page 131