获取sharepoint中datetime字段的秒数

using Microsoft.SharePoint.Client;
using System;

class Program
{
    static void Main()
    {
        string siteUrl = "https://your-sharepoint-site-url";
        string listTitle = "Your List Title";
        int itemId = 1; // Replace with the actual item ID

        using (ClientContext context = new ClientContext(siteUrl))
        {
            List list = context.Web.Lists.GetByTitle(listTitle);
            ListItem item = list.GetItemById(itemId);
            context.Load(item, i => i["YourDateTimeField"]);
            context.ExecuteQuery();

            DateTime dateTimeValue = (DateTime)item["YourDateTimeField"];
            DateTime localDateTime = dateTimeValue.ToLocalTime();
            int seconds = localDateTime.Second;

            Console.WriteLine("Seconds: " + seconds);
        }
    }
}