CnvCheckUTF8File Method

Check that a file contains only valid UTF-8 encoded characters.

Namespace: CryptoSysPKI
Assembly: diCrSysPKINet (in diCrSysPKINet.dll) Version: 23.0.0.25611 (23.0.0.0)

Syntax

public static int CheckUTF8File(
	string fileName
)

Public Shared Function CheckUTF8File ( 
	fileName As String
) As Integer

Parameters

fileName String: name of file to check

Return Value

Int32

Zero if the encoded bytes is invalid UTF-8, or a positive number if the input contains valid UTF-8 data, where the value of the number indicates the nature of the encoded characters:

0	Not valid UTF-8
1	Valid UTF-8, all chars are 7-bit ASCII
2	Valid UTF-8, contains at least one multi-byte character equivalent to 8-bit ANSI
3	Valid UTF-8, contains at least one multi-byte character that cannot be represented in a single-byte character set

Remarks

'Overlong' UTF-8 sequences and illegal surrogates are rejected as invalid.

Reference

Cnv Class

CryptoSysPKI Namespace