Developer versions require the developer’s serial number to be passed to the component using the Serial property before the Barcode() method is called. The Serial property should be set to the serial number provided for your product, e.g.
Dmfnet1.Serial="12345" for VB
dmfnet1.Serial="12345"; for C#
dmfnet1.set_Serial("12345"); for J#
Main properties and methods are shown below; others are listed in the Common .NET component features section
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