ASP.NET全角与半角相互转换

        /**//// <summary>

        /// 全角转半角的函数(DBC case)

        /// </summary>

        /// <param name="input">任意字符串</param>

        /// <returns>半角字符串</returns>

        ///<remarks>

        ///全角空格为12288，半角空格为32

        ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248

        ///</remarks>

        public string ToDBC(string input)

        ...{

            char[] c = input.ToCharArray();

            for (int i = 0; i < c.Length; i++)

            ...{

                if (c[i] == 12288)

                ...{

                    c[i] = (char)32;

                    continue;

                }

                if (c[i] > 65280 && c[i] < 65375)

                    c[i] = (char)(c[i] - 65248);

            }





            string str = c.ToString().Replace("。", ".");

            return new string(c);

        }

		

        /**//// <summary>

        /// 判断字符是否为全角字符

        /// </summary>

        /// <param name="c">任意字符</param>

        /// <returns>全角字符返回true,半角返回false</returns>

        public bool isCharDBC(char c)

        ...{

            if (c > 65280 && c < 65375)

                return true;

            else

                return false;

        }

		

        /**//// <summary>

        /// 半角转全角的函数(SBC case)

        /// </summary>

        /// <param name="input">任意字符串</param>

        /// <returns>全角字符串</returns>

        ///<remarks>

        ///全角空格为12288，半角空格为32

        ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248

        ///</remarks>        

        public string ToSBC(string input)

        ...{


            //半角转全角：

            char[] c = input.ToCharArray();

            for (int i = 0; i < c.Length; i++)

            ...{

                if (c[i] == 32)

                ...{

                    c[i] = (char)12288;

                    continue;

                }

                if (c[i] < 127)

                    c[i] = (char)(c[i] + 65248);

            }

            return new string(c);

        }