Denso BHT-202Q Bedienungsanleitung PDF herunterladen (Seite 142)

100

101

When CD type is N (Codabar):

The barcode data must be three or more digits in length, including the start and stop

characters. Otherwise,

this function throws an exception.

To check whether the CD 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("a0123-a", "N") = Asc("-")) Then

Console.WriteLine ("CD OK")

End If

[C#]

UnicodeEncoding encode = new UnicodeEncoding();

if (Scanner.GetChkDigit("a0123-a", 'N') == (int)encode.GetBytes("-")[0]) {

Console.WriteLine ("CD OK");

}

To append a CD to 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 origDataF As String = "a0123"

Dim origDataR As String = "a"

Dim digit As Integer = Scanner.GetChkDigit(origDataF+"0"+ origDataR, "N")

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

[C#]

string origDataF = "a0123";

string origDataR = "a";

int digit = Scanner.GetChkDigit(origDataF+"0"+ origDataR, 'N');

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

ASCIIEncoding encode = new ASCIIEncoding();

Console.WriteLine("CD = {0}", origDataF+encode.GetString(digitByteArray, 0,

1)+origDataR);

Result

> CD = a0123-a

133

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