C # character Fu Jing ASCII code, ASCII transcoding characters

C # character Fu Jing ASCII code
public static int Asc (string character)
{
if (character. Length = = 1)
{
System.Text.ASCIIEncoding asciiencoding = new System.Text.ASCIIEncoding ();
int intasciicode = (int) asciiencoding.getbytes (character) [0];
return (Intasciicode);
}
Else
{
throw new Exception ("character is invalid.");
}

}

ASCII transcoding characters:

public static string Chr (int asciicode)
{
if (asciicode >= 0 && asciicode <= 255)
{
System.Text.ASCIIEncoding asciiencoding = new System.Text.ASCIIEncoding ();
byte[] ByteArray = new byte[] {(byte) Asciicode};
String strcharacter = Asciiencoding.getstring (ByteArray);
return (Strcharacter);
}
Else
{
throw new Exception ("ASCII is invalid.");
}

ASCII Code table: