/// <summary>
/// Create a datetime format based on an accepted enumeration.
/// </summary>
/// <param name="format">Sets the format for datetimes.</param>
public DateFormat(DateTimeFormatEnum format)
{
if (format == null)
throw new ArgumentNullException("format", "DateFormat requires a DateTimeFormatEnum in this constructor.");
Format = format.ToString();
}
/// <summary>
/// 时间格式化
/// </summary>
/// <param name="obj"></param>
/// <param name="formatEnum"></param>
/// <returns></returns>
public static string FormatExt(this DateTime obj, DateTimeFormatEnum formatEnum)
{
if (obj == null)
{
return(string.Empty);
}
return(obj.ToString(formatEnum.GetDescription()));
}
public static string Format(this DateTime?date, DateTimeFormatEnum to)
{
if (!date.HasValue)
{
return("");
}
return(date.Value.Format(to));
}
public static string Format(this DateTime date, DateTimeFormatEnum to)
{
string dateStr = date.ToString();
switch (to)
{
case DateTimeFormatEnum.DataBase:
dateStr = date.ToString("yyyy-MM-dd HH:mm:ss"); break;
case DateTimeFormatEnum.DataBaseOnlyDate:
dateStr = date.ToString("yyyy-MM-dd"); break;
case DateTimeFormatEnum.Presentation:
dateStr = $"{date.ToString("dd/MM/yyyy")} ás {date.ToString("HH:mm")}"; break;
case DateTimeFormatEnum.PresentationOnlyDate:
dateStr = $"{date.ToString("dd/MM/yyyy")}"; break;
case DateTimeFormatEnum.PresentantionOnlyTime:
dateStr = $"{date.ToString("HH:mm")}"; break;
}
return(dateStr);
}
internal static void WriteDateTimeString(TextWriter writer, DateTime value, TimeSpan offset, DateTimeKind kind, DateTimeFormatEnum format = DateTimeFormatEnum.Standard)
{
long javaScriptTicks = ConvertDateTimeToJavaScriptTicks(value, offset);
switch (format)
{
case DateTimeFormatEnum.Default:
writer.Write(@"""\/Date(");
writer.Write(javaScriptTicks);
switch (kind)
{
case DateTimeKind.Local:
case DateTimeKind.Unspecified:
writer.Write((offset.Ticks >= 0L) ? "+" : "-");
int absHours = Math.Abs(offset.Hours);
if (absHours < 10)
{
writer.Write(0);
}
writer.Write(absHours);
int absMinutes = Math.Abs(offset.Minutes);
if (absMinutes < 10)
{
writer.Write(0);
}
writer.Write(absMinutes);
break;
}
writer.Write(@")\/""");
break;
case DateTimeFormatEnum.Standard:
writer.Write(@"""");
writer.Write(value.ToString("yyyy-MM-dd HH:mm:ss.fff"));
writer.Write(@"""");
break;
case DateTimeFormatEnum.Unix:
writer.Write(javaScriptTicks.ToString());
break;
}
}
