CODEWITHSUNDEEP
c#unicodeemoji
Nikolai Petrov
Nikolai Petrov

Reputation: 25

Translate string to emoji in c#

How to turn such a string into an emoji? 1F600 => 😀 or 1F600 => \U0001F600 or 1F600 => 0x1F600

I spent a few days but I still didn't understand how to translate a string like 1F600 into emoji

Upvotes: 2

Views: 1592

Answers (2)

phuclv
phuclv

Reputation: 41764

You simply need to convert the value to the code point then get the character at that code point:

var emoji = Char.ConvertFromUtf32(Convert.ToInt32("1F600", 16));

Demo on dotnetfiddle

Upvotes: 3

Klaus Gütter
Klaus Gütter

Reputation: 11977

The string "1F600" is the hexadecimal representation of a Unicode code point. As it is not in the BMP, you either need UTF32 or a UTF16 surrogate pair to represent it.

Here is some code to perform the requested conversion using UTF32 representation:

  1. Parse as 32-bit integer:

    var utf32Char = uint.Parse("1F600", NumberStyles.AllowHexSpecifier);

  2. Convert this to a 4-element byte array in litte-endian byte order:

    var utf32Bytes = BitConverter.GetBytes(utf32Char);
if (!BitConverter.IsLittleEndian)
    Array.Reverse(utf32Bytes);

  3. Finally, use Encoding.UTF32 to make a string from it.

    var str = Encoding.UTF32.GetString(utf32Bytes);
Console.WriteLine(str);

Upvotes: 1

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