C# | Char.ConvertFromUtf32(Int32) Method

This method is used to converts the specified Unicode code point into a UTF-16 encoded string.
Syntax:

public static string ConvertFromUtf32 (int utf32);

Here, utf32 is a 21-bit Unicode code point.
Return Value: This method returns a string consisting of one Char object or a surrogate pair of Char objects equivalent to the code point specified by the utf32 parameter.
Exception: This method returns the ArgumentOutOfRangeException if utf32 is not a valid 21-bit Unicode code point ranging from U+0 through U+10FFFF, excluding the surrogate pair range from U+D800 through U+DFFF.
Below programs illustrate the use of Char.ConvertFromUtf32(Int32) Method:
Example 1:

value is B

Example 2: For ArgumentOutOfRangeException

0x11FFFF is exceeding the limit
Exception Thrown: System.ArgumentOutOfRangeException

Reference: 

• https://learn.microsoft.com/en-us/dotnet/api/system.char.convertfromutf32?view=netframework-4.7.2