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  • C#教程之类型转换一种处理方式

  • 2019-07-13 21:31 来源:未知

类型转换一种处理方式

 

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#


		
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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}{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(