To be accurate, Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems. It defines almost all the character sets of the human readable characters.
As we know, Unicode is in two bytes, but most 2d barcode types, like QR Code, Data Matrix and PDF-417 can only encode single-byte strings. So, there's should be some conversion technique during encoding Unicode into these 2d barcode images.
Here's a solution. Our C# Barcode Generator Library for .NET can help developers to achieve this.
In the following example, we'll take three 2D barcodes as examples: QR Code, Data Matrix, and PDF-417.
Concert Unicode into Base64 & Generate Barcode
In our C#.NET Barcode Generator Library, we'll use Base64 encoding algorithm to convert Unicode two bytes characters into Base64 firstly. And then encode Base64 string into 2D barcode images in C# class library. Please see free C# sample code below.
Certainly, Base64 conversion will be needed if you want to decode the created barcode and obtain your original data. After you get that Base64 string, please use the following C# sample code to convert it back to your Unicode string. This is suitable for all the above three Unicode encoding samples.