Table of Contents
Advertisement
When CD type is H (STF):
The barcode data must be two or more digits in length. Otherwise, this function returns "0"
and 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("12345678905", "H") = Asc("5")) Then
Console.WriteLine ("CD OK")
End If
[C#]
UnicodeEncoding encode = new UnicodeEncoding();
if (Scanner.GetChkDigit("12345678905", 'H') == (int)encode.GetBytes("5")[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 origData As String = "1234567890"
Dim digit As Integer = Scanner.GetChkDigit(origData+"0", "H")
Console.WriteLine("CD = {0}", origData + New String(Chr(digit), 1))
[C#]
string origData = "1234567890";
int digit = Scanner.GetChkDigit(origData+"0", 'H');
byte[] digitByteArray = {(byte)digit};
ASCIIEncoding encode = new ASCIIEncoding();
Console.WriteLine("CD = {0}", origData + encode.GetString(digitByteArray, 0, 1));
Result
> CD = 12345678905
- 107 -
Advertisement
Table of Contents
