/// <summary>
/// 将时间日期对象转换为JavaScript整型时间类型
/// </summary>
/// <param name="dateSource">时间类型对象</param>
/// <returns></returns>
public static long ToUnixTimeMilliseconds(this DateTime dateSource)
{
DateTimeOffset dateTimeOffset = new DateTimeOffset(dateSource);
return(dateTimeOffset.ToUnixTimeMilliseconds());
}