C#数字金额转换大写金额

          ///
          /// 将一位数字转换成中文大写数字
          ///
          public string ConvertChinese(string str)
          {
               //"零壹贰叁肆伍陆柒捌玖拾佰仟萬億圆整角分"
               string cstr="";
               switch(str)
               {
                    case "0": cstr="零";break;
                    case "1": cstr="壹";break;
                    case "2": cstr="贰";break;
                    case "3": cstr="叁";break;
                    case "4": cstr="肆";break;
                    case "5": cstr="伍";break;
                    case "6": cstr="陆";break;
                    case "7": cstr="柒";break;
                    case "8": cstr="捌";break;
                    case "9": cstr="玖";break;
               }
               return(cstr);
          }