类型转换一种处理方式

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背景

1. 在开发中，我们会碰到诸如string类型转换为int等等问题，虽然处理起来简单，但是本着dry(don't repeat yourself )原则，还是有必要封装处理下；
2. 具体代码：masterchief
3. nuget：install-package masterchief.dotnet4.utilities
4. 欢迎star，欢迎issues；

实现代码

using system;
using system.componentmodel;
using system.data;
using system.globalization;
 
namespace masterchief.dotnet4.utilities.common
{
    /// <summary>
    ///     转换帮助类
    /// </summary>
    public static class converthelper
    {
        #region methods
 
        /// <summary>
        ///     转换成布尔类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static bool tobooleanordefault(this object data, bool defalut = false)
        {
            return data != null && bool.tryparse(data.tostring(), out var result) ? result : defalut;
        }
 
        /// <summary>
        ///     转换成byte类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static byte tobyteordefault(this object data, byte defalut = 0x00)
        {
            return data != null && byte.tryparse(data.tostring(), out var result) ? result : defalut;
        }
 
        /// <summary>
        ///     转换为农历年
        /// </summary>
        /// <param name="date">日期</param>
        /// <returns>农历年</returns>
        public static string tochinesedate(this datetime date)
        {
            var cndate = new chineselunisolarcalendar();
            string[] months = { string.empty, "正月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "冬月", "腊月" };
            string[] days =
            {
                string.empty, "初一", "初二", "初三", "初四", "初五", "初六", "初七", "初八", "初九", "初十", "十一", "十二", "十三", "十四", "十五",
                "十六", "十七", "十八", "十九", "廿一", "廿二", "廿三", "廿四", "廿五", "廿六", "廿七", "廿八", "廿九", "三十"
            };
            string[] years =
            {
                string.empty, "甲子", "乙丑", "丙寅", "丁卯", "戊辰", "己巳", "庚午", "辛未", "壬申", "癸酉", "甲戌", "乙亥", "丙子", "丁丑", "戊寅",
                "己卯", "庚辰", "辛己", "壬午", "癸未", "甲申", "乙酉", "丙戌", "丁亥", "戊子", "己丑", "庚寅", "辛卯", "壬辰", "癸巳", "甲午", "乙未",
                "丙申", "丁酉", "戊戌", "己亥", "庚子", "辛丑", "壬寅", "癸丑", "甲辰", "乙巳", "丙午", "丁未", "戊申", "己酉", "庚戌", "辛亥", "壬子",
                "癸丑", "甲寅", "乙卯", "丙辰", "丁巳", "戊午", "己未", "庚申", "辛酉", "壬戌", "癸亥"
            };
            var year = cndate.getyear(date);
            var yearcn = years[cndate.getsexagenaryyear(date)];
            int month = cndate.getmonth(date),
                day = cndate.getdayofmonth(date),
                leapmonth = cndate.getleapmonth(year);
            var monthcn = months[month];
 
            if (leapmonth > 0)
            {
                monthcn = month == leapmonth ? $"闰{months[month - 1]}" : monthcn;
                monthcn = month > leapmonth ? months[month - 1] : monthcn;
            }
 
            return $"{yearcn}年{monthcn}{days[day]}";
        }
 
        /// <summary>
        ///     将阿拉伯数字转换中文日期数字
        /// </summary>
        /// <param name="data">日期范围1~31</param>
        /// <returns>中文日期数字</returns>
        public static string tochineseday(int data)
        {
            string result = string.empty;
 
            if (!(data == 0 || data > 32))
            {
                string[] days =
                {
                    "〇", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二", "十三", "十四", "十五", "十六", "十七",
                    "十八", "十九", "廿十", "廿一", "廿二", "廿三", "廿四", "廿五", "廿六", "廿七", "廿八", "廿九", "三十", "三十一"
                };
                result = days[data];
            }
 
            return result;
        }
 
        /// <summary>
        ///     将阿拉伯数字转换成中文月份数字
        ///     <para>eg:converthelper.tochinesemonth(1)==> "一"</para>
        /// </summary>
        /// <param name="data">月份范围1~12</param>
        /// <returns>中文月份数字</returns>
        public static string tochinesemonth(this int data)
        {
            var result = string.empty;
 
            if (!(data == 0 || data > 12))
            {
                string[] months = { "〇", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二" };
                result = months[data];
            }
 
            return result;
        }
 
        /// <summary>
        ///     转换成日期
        /// </summary>
        /// <param name="data">数据</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>日期</returns>
        public static datetime todateordefault(this object data, datetime defalut)
        {
            return datetime.tryparse(data.tostring(), out var result) ? result : defalut;
        }
 
        /// <summary>
        ///     日期转化
        /// </summary>
        /// <returns>目标日期</returns>
        /// <param name="data">数据.</param>
        public static datetime todateordefault(this object data)
        {
            return todateordefault(data, datetime.minvalue);
        }
 
        /// <summary>
        ///     转换成decimal类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static decimal todecimalordefault(this object data, decimal defalut = 0m)
        {
            if (data != null)
            {
                var result = decimal.tryparse(data.tostring(), out var parsedecimalvalue);
                return result ? parsedecimalvalue : defalut;
            }
 
            return defalut;
        }
 
        /// <summary>
        ///     转换成double类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static double todoubleordefault(this object data, double defalut = 0d)
        {
            if (data != null)
            {
                var result = double.tryparse(data.tostring(), out var parseintvalue);
                return result ? parseintvalue : defalut;
            }
 
            return defalut;
        }
 
        /// <summary>
        ///     转换成int32类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static int toint32ordefault(this object data, int defalut = 0)
        {
            if (data != null)
            {
                var result = int.tryparse(data.tostring(), out var parseintvalue);
                return result ? parseintvalue : defalut;
            }
 
            return defalut;
        }
 
        /// <summary>
        ///     转换成int64类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static long toint64ordefault(this object data, long defalut = 0)
        {
            if (data != null)
            {
                var result = long.tryparse(data.tostring(), out var parseintvalue);
                return result ? parseintvalue : defalut;
            }
 
            return defalut;
        }
 
        /// <summary>
        ///     转换成int类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static int tointordefault(this object data, int defalut = 0)
        {
            if (data != null)
            {
                var result = int.tryparse(data.tostring(), out var parseintvalue);
                return result ? parseintvalue : defalut;
            }
 
            return defalut;
        }
 
        /// <summary>
        ///     按照列名称获取int值
        /// </summary>
        /// <param name="row">datarow</param>
        /// <param name="columnname">列名称</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>若列不等于null则返回实际值</returns>
        public static int tointordefault(this datarow row, string columnname, int defalut = 0)
        {
            if (row != null)
                if (row.isnull(columnname))
                    int.tryparse(row[columnname].tostring(), out defalut);
 
            return defalut;
        }
 
        /// <summary>
        ///     按照列索引获取int值
        /// </summary>
        /// <param name="row">datarow</param>
        /// <param name="columnindex">列索引</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>若列不等于null则返回实际值</returns>
        public static int tointordefault(this datarow row, int columnindex, int defalut = 0)
        {
            if (row != null)
                if (row.isnull(columnindex))
                    int.tryparse(row[columnindex].tostring(), out defalut);
 
            return defalut;
        }
 
        /// <summary>
        ///     转换成int16类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static short toshortordefault(this object data, short defalut)
        {
            if (data != null)
            {
                var result = short.tryparse(data.tostring(), out var parseintvalue);
                return result ? parseintvalue : defalut;
            }
 
            return defalut;
        }
 
        /// <summary>
        ///     泛型数组转换为字符串
        /// </summary>
        /// <typeparam name="t">泛型</typeparam>
        /// <param name="array">泛型数组</param>
        /// <param name="delimiter">分隔符</param>
        /// <returns>转换好的字符串</returns>
        public static string tostring<t>(this t[] array, string delimiter)
        {
            var data = array.convertall(array, n => n.tostring());
            return string.join(delimiter, data);
        }
 
        /// <summary>
        ///     字符串类型转换
        /// </summary>
        /// <typeparam name="t">目标类型</typeparam>
        /// <param name="data">需要转换的字符串</param>
        /// <returns>转换类型</returns>
        public static t tostringbase<t>(this string data)
        {
            var result = default(t);
 
            if (!string.isnullorempty(data))
            {
                var convert = typedescriptor.getconverter(typeof(t));
                result = (t)convert.convertfrom(data);
            }
 
            return result;
        }
 
        /// <summary>
        ///     转换成string类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static string tostringordefault(this object data, string defalut)
        {
            return data == null ? defalut : data.tostring();
        }
 
        /// <summary>
        ///     将时间类型转换为字符串表述
        /// </summary>
        /// <param name="data">datetime</param>
        /// <param name="formartstring">格式化字符串</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>字符串</returns>
        public static string tostringordefault(this datetime data, string formartstring, string defalut)
        {
            if (data != default) return data.tostring(formartstring);
 
            return defalut;
        }
 
        /// <summary>
        ///     按照列名称获取sting值
        /// </summary>
        /// <param name="row">datarow</param>
        /// <param name="columnname">列名称</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>若列不等于null则返回实际值</returns>
        public static string tostringordefault(this datarow row, string columnname, string defalut)
        {
            if (row != null) defalut = row.isnull(columnname) ? defalut : row[columnname].tostring();
 
            return defalut;
        }
 
        /// <summary>
        ///     按照列索引获取sting值
        /// </summary>
        /// <param name="row">datarow</param>
        /// <param name="columnindex">列索引</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>若列不等于null则返回实际值</returns>
        public static string tostringordefault(this datarow row, int columnindex, string defalut)
        {
            if (row != null) defalut = row.isnull(columnindex) ? defalut : row[columnindex].tostring().trim();
 
            return defalut;
        }
 
        /// <summary>
        ///     转换成ushort类型
        /// </summary>
        /// <param name="data">需要转换的object</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static ushort toushortordefault(this object data, ushort defalut)
        {
            if (data != null)
            {
                var result = ushort.tryparse(data.tostring(), out var parseushortvalue);
                return result ? parseushortvalue : defalut;
            }
 
            return defalut;
        }
 
        /// <summary>
        ///     将字符串转换为guid
        /// </summary>
        /// <returns>期待guid</returns>
        /// <param name="data">数值.</param>
        public static guid toguidordefault(this string data)
        {
            return toguidordefault(data, guid.empty);
        }
 
        /// <summary>
        ///     将字符串转换为guid
        /// </summary>
        /// <param name="data">需要转换的字符串</param>
        /// <param name="defalut">默认数值</param>
        /// <returns>转换返回</returns>
        public static guid toguidordefault(this string data, guid defalut)
        {
            guid result;
            if (guid.tryparse(data, out result))
                return result;
            return defalut;
        }
 
        #endregion methods
    }
}

代码使用

1. 实现很简单，所以使用也很简单，假如您还是很懒的话，去star下，我告诉您怎么用，哈哈哈~

结语

1. 小弟不才，大佬轻拍；

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