C# ESC/POS 打印越南语

Question

["

I have an application which print the receipt to receipt printer using ESC\/POS.<\/i>

public static readonly string ESC = "\u001B";
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Encoding enc = Encoding.GetEncoding(1258); //vietnamese code page
string content = "Cơm chiên với các loại gia vị truyền thống làm cho lưỡi của bạn";
string toPrint = ESC + "t" + char.ConvertFromUtf32(94) + "\n" + Encoding.GetEncoding("Latin1").GetString(enc.GetBytes(str));  //code page 94 is for vietnamese (WPC1258). It is get from printer

Answer 1

I found the answer! It is not my code, but limitation of CodePage 1258 (see Convert text to Latin encoding and decode back problem for Vietnamese ).

The question still remains, how to print in Vietnamese?

There is a guy name HICURIN that managed to solve the problem (see Print Unicode Characters to POS printer ). Hopefully, he will be kindly to share his code with us.

Cheers, Sam

Answer 2

["

This is all you need to be able to correctly print out Vietnamese characters on your printouts using C#<\/i>

public static readonly string ESC = "\u001B";
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...
...
//Encoding enc = Encoding.GetEncoding(1258); //vietnamese code page
string content = "Cơm chiên với các loại gia vị truyền thống làm cho lưỡi của bạn";
string toPrint = ESC + "t" + char.ConvertFromUtf32(94) + "\n"; 
// First you need to convert the vietnamese string to utf-8 bytes.
byte[] utf8Bytes = System.Text.Encoding.UTF8.GetBytes(content); 
// Convert utf-8 bytes to a string.
toPrint += System.Text.Encoding.UTF8.GetString(utf8Bytes);