ASCII码转换

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//将字符转换成ASCII码
public int Asc(string character)
        {
            if (character.Length > 0)
            {
                ASCIIEncoding asciiEncoding = new ASCIIEncoding();
                int intAsciiCode = (int)asciiEncoding.GetBytes(character)[0];
                return intAsciiCode;
            }
            else
            {
                throw new Exception("Character is not valid");
            }
        }

//将字符串转换成ASCII码
public string Asc(string character)
        {

            ASCIIEncoding asciiEncoding = new ASCIIEncoding();
            byte[] byteArray = asciiEncoding.GetBytes(character);
            StringBuilder str = new StringBuilder();
            for (int i = 0; i < byteArray.Length; i++)
            {
                int intAsciiCode = (int)byteArray[i];
                str.Append(Convert.ToString(intAsciiCode));
                str.Append("|");
            }
            return str.ToString();
        }

//将ASCII码转换成字符
public string Chr(int asciiCode)
        {
            if (asciiCode >= 0 && asciiCode <= 255)
            {
                ASCIIEncoding asciiEncoding = new ASCIIEncoding();
                byte[] byteArray = new byte[] { (byte)asciiCode };
                string strCharacter = asciiEncoding.GetString(byteArray);
                return (strCharacter);
            }
            else
            {
                throw new Exception("ASCII Code is not valid.");
            }
        }

//把ASCII码转换成字符串
public string Chr(string asciiCode)
        {
            ASCIIEncoding asciiEncoding = new ASCIIEncoding();
            string[] strArray = asciiCode.Split(new string[] { "|" }, StringSplitOptions.RemoveEmptyEntries);
            string str = String.Empty;
            for (int i = 0; i < strArray.Length; i++)
            {
                int intAsciiCode = int.Parse(strArray[i]);
                if (intAsciiCode >= 0 && intAsciiCode <= 255)
                {
                    str += asciiEncoding.GetString(new byte[] { (byte)intAsciiCode });
                }
            }
            return str;
        }