using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
namespace Edu.Common
{
/// <summary>
/// 类型转换帮助类
/// </summary>
public static class ConvertHelper
{
/// <summary>
/// 格式化时间【yyyy-MM-dd HH:mm:ss】
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public static string FormatTime(this object time)
{
string timeStr = "";
if (time != null)
{
try
{
timeStr = Convert.ToDateTime(time.ToString()).ToString("yyyy-MM-dd HH:mm:ss");
if (timeStr == "0001-01-01 00:00:00")
{
timeStr = "";
}
}
catch
{
}
}
return timeStr;
}
/// <summary>
/// 获取时间格式
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public static string FormatTimeStr(this object time)
{
string timeStr = "";
if (time != null)
{
try
{
timeStr = Convert.ToDateTime(time.ToString()).ToString("HH:mm");
}
catch
{
}
}
return timeStr;
}
/// <summary>
/// 获取时间格式yyyy-MM-dd HH:mm
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public static string FormatTimeStr2(this object time)
{
string timeStr = "";
if (time != null)
{
try
{
var newTime = Convert.ToDateTime(time.ToString());
if (newTime.Year == DateTime.Now.Year)
{
timeStr = Convert.ToDateTime(time.ToString()).ToString("MM-dd HH:mm");
}
else
{
timeStr = Convert.ToDateTime(time.ToString()).ToString("yyyy-MM-dd HH:mm");
}
}
catch
{
}
}
return timeStr;
}
/// <summary>
/// 获取时间格式
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public static string FormatMonthDay(this object time)
{
string timeStr = "";
if (time != null)
{
try
{
timeStr = Convert.ToDateTime(time.ToString()).ToString("MM-dd");
}
catch
{
}
}
return timeStr;
}
/// <summary>
/// 格式化时间【yyyy-MM-dd】
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public static string FormatDate(this object time)
{
string timeStr = "";
if (time != null)
{
try
{
timeStr = Convert.ToDateTime(time.ToString()).ToString("yyyy-MM-dd");
if (timeStr == "0001-01-01")
{
timeStr = "";
}
}
catch
{
}
}
return timeStr;
}
/// <summary>
/// 格式化时间【yyyy年MM月dd日】
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
public static string FormatDate2(this object time)
{
string timeStr = "";
if (time != null)
{
try
{
timeStr = Convert.ToDateTime(time.ToString()).ToString("yyyy年MM月dd日");
if (timeStr == "0001年01月01日")
{
timeStr = "";
}
}
catch
{
}
}
return timeStr;
}
/// <summary>
/// 字符串转List
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static List<int> StringToList(object value)
{
List<int> list = new List<int>();
if (value != null && !string.IsNullOrEmpty(value.ToString()))
{
var tempArray = value.ToString().Split(',');
if (tempArray != null && tempArray.Length > 0)
{
foreach (var item in tempArray)
{
Int32.TryParse(item, out int NewValue);
if (NewValue > 0)
{
list.Add(NewValue);
}
}
}
}
return list;
}
/// <summary>
/// 字符串转列表
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static List<string> StringToFileList(object value)
{
List<string> list = new List<string>();
if (value != null && !string.IsNullOrEmpty(value.ToString()))
{
var tempArray = value.ToString().Split(',');
if (tempArray != null && tempArray.Length > 0)
{
foreach (var item in tempArray)
{
if (!string.IsNullOrWhiteSpace(item))
{
list.Add(item);
}
}
}
}
return list;
}
/// <summary>
/// 时间集合转字符串用户SQL查询使用
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
public static string DateTimeListToString(List<DateTime> list)
{
string str = "";
if (list != null && list.Count > 0)
{
foreach (var item in list)
{
str += ",'" + FormatDate(item) + "'";
}
}
return str.TrimStart(',').TrimEnd(',');
}
/// <summary>
/// 根据日期获取星期几
/// </summary>
/// <param name="date">日期</param>
/// <returns></returns>
public static string GetWeekDay(this object date)
{
string weekDay = "";
if (date != null)
{
try
{
var dateTime = Convert.ToDateTime(date.ToString());
string strWeek = dateTime.DayOfWeek.ToString();
switch (strWeek)
{
case "Monday": weekDay = "星期一"; break;
case "Tuesday": weekDay = "星期二"; break;
case "Wednesday": weekDay = "星期三"; break;
case "Thursday": weekDay = "星期四"; break;
case "Friday": weekDay = "星期五"; break;
case "Saturday": weekDay = "星期六"; break;
case "Sunday": weekDay = "星期天"; break;
}
}
catch
{
}
}
return weekDay;
}
/// <summary>
/// 计算两个时间相差分钟数
/// </summary>
/// <param name="start"></param>
/// <param name="end"></param>
/// <returns></returns>
public static int CalcMinutes(DateTime start, DateTime end)
{
int minutes=Convert.ToInt32((end - start).TotalSeconds);
minutes /= 60;
return minutes;
}
/// <summary>
/// 是否为时间型字符串
/// </summary>
/// <param name="source">时间字符串(15:00:00)</param>
/// <returns></returns>
public static bool IsTime(string StrSource)
{
return Regex.IsMatch(StrSource, @"^((20|21|22|23|[0-1]?\d):[0-5]?\d:[0-5]?\d)$");
}
/// <summary>
/// 获取英文字母
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
public static string GetEnChar(int index)
{
string[] tempArray = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };
if (index < tempArray.Length)
{
return tempArray[index];
}
return "";
}
/// <summary>
/// 根据文件路径转base64
/// </summary>
/// <param name="filePath"></param>
/// <returns></returns>
public static string ConvertImageToBase64(string filePath)
{
Image file = Image.FromFile(filePath);
using MemoryStream memoryStream = new MemoryStream();
file.Save(memoryStream, file.RawFormat);
byte[] imageBytes = memoryStream.ToArray();
return Convert.ToBase64String(imageBytes);
}
/// <summary>
/// 字符串转数字
/// </summary>
/// <param name="inputStr"></param>
/// <returns></returns>
public static int ConvertStringToNumber(string inputStr)
{
int result = 0;
var chatArray = inputStr.ToCharArray();
foreach (var cItem in chatArray)
{
switch (cItem)
{
case '一':
result += 1;
break;
case '二':
result += 2;
break;
case '三':
result += 3;
break;
case '四':
result += 4;
break;
case '五':
result += 5;
break;
case '六':
result += 6;
break;
case '七':
result += 7;
break;
case '八':
result += 8;
break;
case '九':
result += 9;
break;
case '十':
result += 10;
break;
}
}
return result;
}
/// <summary>
/// 拼接图片字符串
/// </summary>
/// <param name="base64"></param>
/// <returns></returns>
public static string GetImageString(string base64)
{
StringBuilder builder = new StringBuilder();
builder.AppendFormat(@"<p><img src='data:image/png;base64,{0}' /></p>", base64);
return builder.ToString();
}
/// <summary>
/// 拼接下划线
/// </summary>
/// <param name="value"></param>
/// <param name="isAddNbsp"></param>
/// <returns></returns>
public static string GetSpanString(string value,bool isAddNbsp=false)
{
StringBuilder builder = new StringBuilder();
builder.AppendFormat(@"<span style='text-decoration: underline;'>{1}{0}{1}</span>", value, (isAddNbsp ? " " : ""));
return builder.ToString();
}
/// <summary>
/// 根据出生日期计算年龄
/// </summary>
/// <param name="birthdate"></param>
/// <returns></returns>
public static int GetAgeByBirthdate(object birthdate)
{
int age = 0;
DateTime now = DateTime.Now;
if (birthdate != null)
{
try
{
var timeStr = Convert.ToDateTime(birthdate.ToString()).ToString("yyyy-MM-dd");
if (timeStr == "0001-01-01")
{
timeStr = "";
}
if (!string.IsNullOrEmpty(timeStr))
{
var newBirth = Convert.ToDateTime(timeStr);
age = now.Year - newBirth.Year;
if (now.Month < newBirth.Month || (now.Month == newBirth.Month && now.Day < newBirth.Day))
{
age--;
}
}
}
catch
{
}
}
return age < 0 ? 0 : age;
}
/// <summary>
/// 获取时间段字符串
/// </summary>
/// <param name="objDate"></param>
/// <returns></returns>
public static string GetTimeStr(object objDate)
{
string str = "";
if (objDate != null)
{
DateTime date = Convert.ToDateTime(objDate);
int times = date.Hour;
if (times >= 0 && times < 12) { str = "早上"; }
if (times >= 12 && times < 17) { str = "下午"; }
if (times >= 17 && times < 24) { str = "晚上"; }
}
return str;
}
/// <summary>
/// 获取最近一个星期一
/// </summary>
/// <param name="objDate"></param>
/// <returns></returns>
public static string GetWeekMonday(string objDate)
{
DateTime date = Convert.ToDateTime(objDate);
DateTime first = System.DateTime.Now;
switch (date.DayOfWeek)
{
case System.DayOfWeek.Monday:
first = date;
break;
case System.DayOfWeek.Tuesday:
first = date.AddDays(-1);
break;
case System.DayOfWeek.Wednesday:
first = date.AddDays(-2);
break;
case System.DayOfWeek.Thursday:
first = date.AddDays(-3);
break;
case System.DayOfWeek.Friday:
first = date.AddDays(-4);
break;
case System.DayOfWeek.Saturday:
first = date.AddDays(-5);
break;
case System.DayOfWeek.Sunday:
first = date.AddDays(-6);
break;
}
return FormatDate(first);
}
/// <summary>
/// 获取最近一个星期天
/// </summary>
/// <param name="objDate"></param>
/// <returns></returns>
public static string GetWeekSunday(string objDate)
{
DateTime date = Convert.ToDateTime(objDate);
DateTime last = Convert.ToDateTime(objDate);
switch (date.DayOfWeek)
{
case System.DayOfWeek.Monday:
last = date.AddDays(6);
break;
case System.DayOfWeek.Tuesday:
last = date.AddDays(5);
break;
case System.DayOfWeek.Wednesday:
last = date.AddDays(4);
break;
case System.DayOfWeek.Thursday:
last = date.AddDays(3);
break;
case System.DayOfWeek.Friday:
last = date.AddDays(2);
break;
case System.DayOfWeek.Saturday:
last = date.AddDays(1);
break;
case System.DayOfWeek.Sunday:
last = date;
break;
}
return FormatDate(last);
}
}
}