常用类型转换

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Collections;
using Microsoft.VisualBasic;

namespace Thewolfs.Framework.Text
{
    /// <summary>
    /// 类型转换类
    /// </summary>
    public class TwConvert
    {
        #region 将数字金额转换成大写人民币形式。
        /// <summary>
        /// 将数字金额转换成大写人民币形式。
        /// </summary>
        /// <param name="num">金额</param>
        /// <returns>返回大写形式</returns>
        public static string Num2RMB(decimal num)
        {
            string _chineseNumbers = "零壹贰叁肆伍陆柒捌玖"; //0-9所对应的汉字
            string _chineseUnits = "万仟佰拾亿仟佰拾万仟佰拾元角分"; //数字位所对应的汉字
            string _sourceNumItem = ""; //从原num值中取出的值
            string _chineseNumItem = ""; //数字的字符串形式
            string _chineseUnitItem = ""; //人民币大写金额形式
            int i; //循环变量
            int j; //num的值乘以100的字符串长度
            string _chineseNumberSpell = ""; //数字的汉语读法
            string _chineseUnitSpell = ""; //数字位的汉字读法
            int _continuousZeroCount = 0; //用来计算连续的零值是几个
            int _tempNumber; //从原num值中取出的值

            num = Math.Round(Math.Abs(num), 2); //将num取绝对值并四舍五入取2位小数
            _chineseNumItem = ((long)(num * 100)).ToString(); //将num乘100并转换成字符串形式
            j = _chineseNumItem.Length; //找出最高位
            if (j > 15)
            {
                return "溢出";
            }
            _chineseUnits = _chineseUnits.Substring(15 - j); //取出对应位数的str2的值。如：200.55,j为5所以str2=佰拾元角分

            //循环取出每一位需要转换的值
            for (i = 0; i < j; i++)
            {
                _sourceNumItem = _chineseNumItem.Substring(i, 1); //取出需转换的某一位的值
                _tempNumber = Convert.ToInt32(_sourceNumItem); //转换为数字
                if (i != (j - 3) && i != (j - 7) && i != (j - 11) && i != (j - 15))
                {
                    //当所取位数不为元、万、亿、万亿上的数字时
                    if (_sourceNumItem == "0")
                    {
                        _chineseNumberSpell = "";
                        _chineseUnitSpell = "";
                        _continuousZeroCount = _continuousZeroCount + 1;
                    }
                    else
                    {
                        if (_sourceNumItem != "0" && _continuousZeroCount != 0)
                        {
                            _chineseNumberSpell = "零" + _chineseNumbers.Substring(_tempNumber * 1, 1);
                            _chineseUnitSpell = _chineseUnits.Substring(i, 1);
                            _continuousZeroCount = 0;
                        }
                        else
                        {
                            _chineseNumberSpell = _chineseNumbers.Substring(_tempNumber * 1, 1);
                            _chineseUnitSpell = _chineseUnits.Substring(i, 1);
                            _continuousZeroCount = 0;
                        }
                    }
                }
                else
                {
                    //该位是万亿，亿，万，元位等关键位
                    if (_sourceNumItem != "0" && _continuousZeroCount != 0)
                    {
                        _chineseNumberSpell = "零" + _chineseNumbers.Substring(_tempNumber * 1, 1);
                        _chineseUnitSpell = _chineseUnits.Substring(i, 1);
                        _continuousZeroCount = 0;
                    }
                    else
                    {
                        if (_sourceNumItem != "0" && _continuousZeroCount == 0)
                        {
                            _chineseNumberSpell = _chineseNumbers.Substring(_tempNumber * 1, 1);
                            _chineseUnitSpell = _chineseUnits.Substring(i, 1);
                            _continuousZeroCount = 0;
                        }
                        else
                        {
                            if (_sourceNumItem == "0" && _continuousZeroCount >= 3)
                            {
                                _chineseNumberSpell = "";
                                _chineseUnitSpell = "";
                                _continuousZeroCount = _continuousZeroCount + 1;
                            }
                            else
                            {
                                if (j >= 11)
                                {
                                    _chineseNumberSpell = "";
                                    _continuousZeroCount = _continuousZeroCount + 1;
                                }
                                else
                                {
                                    _chineseNumberSpell = "";
                                    _chineseUnitSpell = _chineseUnits.Substring(i, 1);
                                    _continuousZeroCount = _continuousZeroCount + 1;
                                }
                            }
                        }
                    }
                }
                if (i == (j - 11) || i == (j - 3))
                {
                    //如果该位是亿位或元位，则必须写上
                    _chineseUnitSpell = _chineseUnits.Substring(i, 1);
                }
                _chineseUnitItem = _chineseUnitItem + _chineseNumberSpell + _chineseUnitSpell;

                if (i == j - 1 && _sourceNumItem == "0")
                {
                    //最后一位（分）为0时，加上“整”
                    _chineseUnitItem = _chineseUnitItem + '整';
                }
            }
            if (num == 0)
            {
                _chineseUnitItem = "零元整";
            }
            return _chineseUnitItem;
        }

        /// <summary>
        /// 将数字金额转换成大写人民币形式。
        /// 一个重载，将字符串先转换成数字在调用CmycurD(decimal num)
        /// </summary>
        /// <param name="numstr">用户输入的金额，字符串形式未转成decimal</param>
        /// <returns></returns>
        public static string Num2RMB(string numstr)
        {
            try
            {
                decimal num = Convert.ToDecimal(numstr);
                return Num2RMB(num);
            }
            catch
            {
                return "非数字形式！";
            }
        }
        #endregion

        #region GB2312转换成UTF-8
        /// <summary>
        /// 将GB2312转换成UTF-8
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static string GB2312ToUTF8(string content)
        {
            byte[] _byteData = Encoding.Default.GetBytes(content);
            String _content = Encoding.UTF8.GetString(_byteData);
            return _content;
        }
        #endregion

        #region 类型转换

        #region Boolean类型转换
        /// <summary>
        /// 转换成Boolean类型
        /// </summary>
        /// <param name="value">值可以是 true false 或者 1 0</param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static bool ToBoolean(object value, bool defaultValue)
        {
            if (value == null)
            {
                return defaultValue;
            }
            string _value = value.ToString().ToLower();
            if (_value == "true" || _value == "1" || _value == "-1")
            {
                return true;
            }
            if (_value == "false" || _value == "0")
            {
                return false;
            }

            return defaultValue;
        }

        /// <summary>
        /// 转换成Boolean类型,[默认值 = False]
        /// </summary>
        /// <param name="value">值可以是 true false 或者 1 0</param>
        /// <returns></returns>
        public static bool ToBoolean(object value)
        {
            return ToBoolean(value, false);
        }
        #endregion

        #region Char类型转换
        /// <summary>
        /// 转换成Char类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static char ToChar(object value, char defaultValue)
        {
            try
            {
                char _value = Convert.ToChar(value);
                return _value;
            }
            catch
            {
                return defaultValue;
            }
        }
        #endregion

        #region DateTime类型转换
        /// <summary>
        /// 转换成 DateTime 类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static System.DateTime ToDateTime(object value, System.DateTime defaultValue)
        {
            try
            {
                return Convert.ToDateTime(value);
            }
            catch
            {
                return defaultValue;
            }
        }

        /// <summary>
        /// 转换成 DateTime 类型 [默认值 = DateTime.Now]
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static System.DateTime ToDateTime(object value)
        {
            return ToDateTime(value, DateTime.Now);
        }
        #endregion


        #region Decimal类型转换
        /// <summary>
        /// 转换成 Decimal 类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static decimal ToDecimal(object value, Decimal defaultValue)
        {
            try
            {
                decimal _value = Convert.ToDecimal(value);
                return _value;
            }
            catch
            {
                return defaultValue;
            }
        }

        /// <summary>
        /// 转换成 Decimal 类型 [默认值 = -1]
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static decimal ToDecimal(object value)
        {
            return ToDecimal(value, -1);
        }
        #endregion

        #region Double类型转换
        /// <summary>
        /// 转换成 Double 类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static double ToDouble(object value, double defaultValue)
        {
            try
            {
                double _value = Convert.ToDouble(value);
                return _value;
            }
            catch
            {
                return defaultValue;
            }
        }

        /// <summary>
        /// 转换成 Double 类型 [默认值 = -1]
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static double ToDouble(object value)
        {
            return ToDouble(value, -1);
        }
        #endregion

        #region Int16类型转换
        /// <summary>
        /// 转换成 short [Int16] 类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static short ToInt16(object value, short defaultValue)
        {
            try
            {
                short _value = Convert.ToInt16(value);
                return _value;
            }
            catch
            {
                return defaultValue;
            }
        }
        /// <summary>
        /// 转换成 short [Int16] 类型 [默认值 = -1]
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static short ToInt16(object value)
        {
            return ToInt16(value, -1);
        }
        #endregion

        #region Int32类型转换
        /// <summary>
        /// 转换成 int[Int32] 类型 [默认值 = -1]
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static int ToInt32(object value)
        {
            return ToInt32(value, -1);
        }

        /// <summary>
        /// 转换成 int[Int32] 类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static int ToInt32(object value, int defaultValue)
        {
            try
            {
                return Convert.ToInt32(value);
            }
            catch
            {
                return defaultValue;
            }
        }
        #endregion

        #region Int64类型转换
        /// <summary>
        /// 转换成 long[Int64] 类型
        /// </summary>
        /// <param name="value"></param>
        /// <param name="defaultValue">当值无法转换时的默认值</param>
        /// <returns></returns>
        public static long ToInt64(object value, long defaultValue)
        {
            try
            {
                long _value = Convert.ToInt64(value);
                return _value;
            }
            catch
            {
                return defaultValue;
            }
        }

        /// <summary>
        /// 转换成 long[Int64] 类型 [默认值 = -1]
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static long ToInt64(object value)
        {
            return ToInt64(value, -1);
        }
        #endregion

        /// <summary>
        /// 将以符号分割的字符串转换成ArrayList类型
        /// </summary>
        /// <param name="content"></param>
        /// <param name="splitChar">分割符如：,</param>
        /// <returns></returns>
        public static ArrayList StringToArrayList(string content, char splitChar)
        {
            ArrayList al = new ArrayList();
            foreach (string str in content.Split(splitChar))
            {
                al.Add(str);
            }
            return al;
        }

        #endregion
    }
}