internal static bool CheckIdentifier(byte[] IDBlock)
{
// ë
if (IDBlock[0] != 137)
return false;
// Chars = 'PNG'
for (int i = 1; i < Identifier.Length; i++)
if (IDBlock[i] != Identifier[i-1])
return false;
// \n\r→\n
if (IDBlock[4] != 13 || IDBlock[5] != 10 || IDBlock[6] != 26 || IDBlock[7] != 10)
return false;
return true;
}