using System;
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using System.Text;
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namespace CommonUtil
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{
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/// <summary>
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/// 扩展方法工具类/日期
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/// </summary>
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public static partial class ExtendUtil
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{
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/// <summary>
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/// 转换为日期，null会转为DateTime最小值
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/// </summary>
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/// <param name="data">数据</param>
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/// <returns>日期</returns>
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public static DateTime ToDateTime(this string data)
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{
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if (data.IsNullOrEmpty())
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{
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return DateTime.MinValue;
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}
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return DateTime.TryParse(data, out DateTime result) ? result : DateTime.MinValue;
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}
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/// <summary>
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/// 转换为可空日期
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/// </summary>
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/// <param name="data">数据</param>
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/// <returns>可空日期</returns>
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public static DateTime? ToDatetimeOrNull(this string data)
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{
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if (data.IsNullOrEmpty())
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{
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return null;
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}
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return DateTime.TryParse(data, out DateTime result) ? (DateTime?)result : null;
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}
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/// <summary>
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/// 获取格式化时间字符串，带时分秒，格式：yyyy/MM/dd HH:mm:ss
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <param name="isRemoveSecond">是否移除秒</param>
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/// <returns>yyyy/MM/dd HH:mm:ss</returns>
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public static string ToDateTimeString(this DateTime dateTime, bool isRemoveSecond = false)
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{
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if (isRemoveSecond)
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{
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return dateTime.ToString("yyyy/MM/dd HH:mm");
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}
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else
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{
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return dateTime.ToString("yyyy/MM/dd HH:mm:ss");
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}
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}
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/// <summary>
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/// 获取格式化时间字符串，带时分秒，格式：yyyy/MM/dd HH:mm:ss
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>yyyy/MM/dd HH:mm:ss</returns>
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public static string ToDateTimeStringWithOutMinute(this DateTime dateTime)
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{
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return dateTime.ToString("yyyy/MM/dd HH");
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}
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/// <summary>
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/// 获取格式化时间字符串，带时分秒，格式：yyyy/MM/dd HH:mm:ss
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <param name="isRemoveSecond">是否移除秒</param>
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/// <returns>yyyy/MM/dd HH:mm:ss</returns>
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public static string ToDateTimeString(this DateTime? dateTime, bool isRemoveSecond = false)
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{
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return dateTime.HasValue ? ToDateTimeString(dateTime.Value, isRemoveSecond) : string.Empty;
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}
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/// <summary>
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/// 获取格式化时间字符串，不带时分秒，格式：yyyy/MM/dd
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>yyyy/MM/dd</returns>
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public static string ToDateString(this DateTime dateTime)
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{
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return dateTime.ToString("yyyy/MM/dd");
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}
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/// <summary>
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/// 获取格式化时间字符串，不带时分秒，格式：yyyy/MM/dd
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>yyyy/MM/dd</returns>
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public static string ToDateString(this DateTime? dateTime)
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{
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return dateTime.HasValue ? ToDateString(dateTime.Value) : string.Empty;
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}
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/// <summary>
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/// 获取格式化时间字符串，不带年月日，格式：HH:mm:ss
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>HH:mm:ss</returns>
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public static string ToTimeString(this DateTime dateTime)
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{
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return dateTime.ToString("HH:mm:ss");
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}
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/// <summary>
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/// 获取格式化时间字符串，不带年月日，格式：HH:mm:ss
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>HH:mm:ss</returns>
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public static string ToTimeString(this DateTime? dateTime)
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{
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return dateTime.HasValue ? ToTimeString(dateTime.Value) : string.Empty;
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}
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/// <summary>
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/// 获取格式化字符串，带毫秒，格式：yyyy/MM/dd HH:mm:ss.fff
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>yyyy/MM/dd HH:mm:ss.fff"</returns>
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public static string ToMillisecondString(this DateTime dateTime)
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{
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return dateTime.ToString("yyyy/MM/dd HH:mm:ss.fff");
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}
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/// <summary>
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/// 获取格式化字符串，带毫秒，格式：yyyy/MM/dd HH:mm:ss.fff
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>yyyy/MM/dd HH:mm:ss.fff</returns>
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public static string ToMillisecondString(this DateTime? dateTime)
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{
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return dateTime.HasValue ? ToMillisecondString(dateTime.Value) : string.Empty;
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}
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/// <summary>
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/// 获取格式化字符串，不带时分秒，格式：yyyy年MM月dd日
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>yyyy年MM月dd日</returns>
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public static string ToCNDateString(this DateTime dateTime)
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{
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return string.Format("{0}年{1}月{2}日", dateTime.Year, dateTime.Month, dateTime.Day);
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}
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/// <summary>
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/// 获取格式化字符串，不带时分秒，格式：yyyy年MM月dd日
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <returns>yyyy年MM月dd日</returns>
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public static string ToCNDateString(this DateTime? dateTime)
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{
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return dateTime.HasValue ? ToCNDateString(dateTime.Value) : string.Empty;
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}
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/// <summary>
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/// 获取格式化字符串，带时分秒，格式：yyyy年MM月dd日 HH时mm分ss秒
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <param name="isRemoveSecond">是否移除秒</param>
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/// <returns>yyyy年MM月dd日 HH时mm分ss秒</returns>
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public static string ToCNDateTimeString(this DateTime dateTime, bool isRemoveSecond = false)
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{
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StringBuilder result = new StringBuilder();
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result.AppendFormat("{0}年{1}月{2}日", dateTime.Year, dateTime.Month, dateTime.Day);
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result.AppendFormat(" {0}时{1}分", dateTime.Hour, dateTime.Minute);
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if (!isRemoveSecond)
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{
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result.AppendFormat("{0}秒", dateTime.Second);
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}
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return result.ToString();
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}
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/// <summary>
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/// 获取格式化字符串，带时分秒，格式：yyyy年MM月dd日 HH时mm分ss秒
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/// </summary>
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/// <param name="dateTime">日期</param>
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/// <param name="isRemoveSecond">是否移除秒</param>
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/// <returns>yyyy年MM月dd日 HH时mm分ss秒</returns>
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public static string ToCNDateTimeString(this DateTime? dateTime, bool isRemoveSecond = false)
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{
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return dateTime.HasValue ? ToCNDateTimeString(dateTime.Value, isRemoveSecond) : string.Empty;
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}
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/// <summary>
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/// 将Unix时间戳转换为DateTime类型时间
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/// </summary>
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/// <param name="unixTime">整型数字</param>
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/// <returns>DateTime</returns>
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public static DateTime ToDateTimeSeconds(this long unixTime)
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{
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var dto = DateTimeOffset.FromUnixTimeSeconds(unixTime);
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return dto.ToLocalTime().DateTime;
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}
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/// <summary>
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/// 将Unix时间戳转换为DateTime类型时间
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/// </summary>
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/// <param name="unixTime">整型数字</param>
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/// <returns>DateTime</returns>
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public static DateTime ToDateTime(this long unixTime)
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{
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var dto = DateTimeOffset.FromUnixTimeMilliseconds(unixTime);
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return dto.ToLocalTime().DateTime;
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}
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/// <summary>
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/// 将DateTime时间格式转换为Unix时间戳格式
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/// </summary>
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/// <param name="time">时间</param>
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/// <returns>long</returns>
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public static long EncodeUnix(this DateTime time)
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{
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return new DateTimeOffset(time).ToUnixTimeSeconds();
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}
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/// <summary>
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/// 将DateTime时间格式转换为Unix时间戳格式（毫秒）
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/// </summary>
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/// <param name="time">DateTime时间</param>
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/// <returns>long</returns>
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public static long EncodeUnixMillisecond(this DateTime time)
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{
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return new DateTimeOffset(time).ToUnixTimeMilliseconds();
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}
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/// <summary>
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/// 获取指定星期的日期
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/// </summary>
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/// <param name="dt">时间</param>
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/// <param name="weekday">星期</param>
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/// <param name="Number">下周：1，下下周：2，上周：0</param>
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/// <returns>DateTime</returns>
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public static DateTime GetWeekUpOfDate(this DateTime dt, int weekday, int Number)
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{
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int wd1 = weekday;
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int wd2 = (int)dt.DayOfWeek;
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return wd2 == wd1 ? dt.AddDays(7 * Number) : dt.AddDays(7 * Number / wd2 + wd1);
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}
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}
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}
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