C#中英文記号相互回転(半角全角相互回転)

        /// 

        ///      
        ///      32，     12288
        ///       (33-126)   (65281-65374)      ：   65248
        /// 
        ///             
        ///         
        public string ToSBC(string input)
        {
            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);
        }

        /// 

        ///      
        ///      12288，     32
        ///       (33-126)   (65281-65374)      ：   65248
        /// 
        ///             
        ///        
        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);
            }
            return new string(c);
        }