SharePoint中的时间问题(转)

CAML

items due before 15 days after today.

<SharePoint:SPDataSource
   ...
   selectcommand="<View><Query>
   <OrderBy><FieldRef Name='Date_Due' Ascending='TRUE'/></OrderBy>
   <Where><Leq><FieldRef Name='Date_Due'/><Value Type='DateTime'><Today OffsetDays='15'/></Value>
   </Leq></Where></Query></View>" 
   ...
>

     

[Today+3Day(s)]对时间的筛选

     caml查询的时候默认是不精确匹配时间的，需要加上一个属性，就是
IncludeTimeValue='true'
使得caml查询变成

<Where>
                                           
                                              <Eq>
                                                <FieldRef Name='_ModerationStatus' />
                                                <Value Type='ModStat'>已批准Value>
                                             Eq>
                                              <Leq>
                                                 <FieldRef Name='" + list.Fields["公告发布时间"].InternalName + @"' />
                                                 <Value Type='DateTime' IncludeTimeValue='true'>" + DateTime.Now.ToString() + @"ZValue>
                                              Leq>
                                            
                                       Where>

这样再查询的话，就是精确匹配时间的查询了。

在页面的时间栏中填写的时间如果是
2008-8-8 0：00
然后保存页面，用程序访问刚才的列表项，然后显示刚才的时间，却显示为2008-8-8 8：00.
刚开始我也很是奇怪呢，后来才发现，估计是时区在作怪，sharepoint内部存储时间都是用那个什么格陵时间吧，可能是为了统一。然后在页面显示的时候才显示为本地时间。

用下面的函数可以转化本地时间为标准时间
DateTime.Now.ToUniversalTime().ToString()

还有就是容易搞混的
8月24号的24：00就是8月25号的0：00
这个问题把我弄混好多次了，几乎每次都中招。

下面的代码是处理过期的新闻测试代码，在sharepoint中的过期新闻，被我从“页面（Pages）”列表库移动到了“过期新闻（DocLib）”列表库

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;

namespace ConsoleApplication1
{
    class Program
    {


        static void Main(string[] args)
        {
            SPSecurity.RunWithElevatedPrivileges(
                                               delegate()
                                               {
                                                   using (SPSite site = new SPSite(@"http://virus/sites/intranet"))
                                                   {
                                                       using (SPWeb web = site.AllWebs["team"])
                                                       {
                                                           web.AllowUnsafeUpdates = true;

                                                           SPList list = web.Lists["页面"];
                                                           foreach (SPListItem item in list.Items)
                                                           {
                                                               Console.WriteLine("名称:" + item.GetFormattedValue("名称") + "结束日期:" + item.GetFormattedValue("结束日期"));
                                                               Console.WriteLine(DateTime.Now.ToUniversalTime().ToString());
                                                           }

                                                          // SPList list = web.Lists["页面"];
                                                           SPListItemCollection items = null;
                                                           SPQuery query = new SPQuery();
                                                             query.Query = @"<Where>
                                                              <Leq>
                                                                 <FieldRef Name='" + list.Fields["结束日期"].InternalName + @"' />
                                                                 <Value Type='DateTime'>" + DateTime.Now.ToString() + @"Z</Value>
                                                              </Leq>
                                                           </Where>";
                                                           items = list.GetItems(query);
                                                           foreach (SPListItem item in items)
                                                           {
                                                               item.CopyTo(web.Url + "/DocLib/" + item.Name);
                                                               //item.Delete();
                                                           }

                                                           //#region 从Pages（中文名字：页面）列表库拷贝/移动文件到DocLib（中文名字：过期新闻）列表库
                                                           //SPList list = web.Lists["页面"];
                                                           //foreach (SPListItem item in list.Items)
                                                           //{
                                                           //    //列表项从一个列表库拷贝到另外一个列表库，列表项不支持移动（MoveTto）
                                                           //    item.CopyTo(web.Url + "/DocLib/" + item.Name);
                                                           //}
                                                           //#endregion

                                                           //#region 从Pages（中文名字：页面）文档库拷贝/移动文件到DocLib（中文名字：过期新闻）文档库
                                                    //       SPFolder oFolder = web.GetFolder("Pages");
                                                    //       SPFileCollection collFiles = oFolder.Files;

                                                    //       for (int intIndex = collFiles.Count - 1; intIndex > -1; intIndex--)
                                                    //       {
                                                    //           //文档从一个文档库拷贝到另一个文档库
                                                    //               collFiles[intIndex].CopyTo(web.Url+"/DocLib/" + collFiles[intIndex].Name);
                                                    //               //文档从一个文档库移动到另一个文档库
                                                    //           collFiles[intIndex].MoveTo(web.Url+"/DocLib/" + collFiles[intIndex].Name);

                                                    //       }

                                                    //#endregion
                                                           web.AllowUnsafeUpdates = false;
                                                       }
                                                   }
                                               });

            Console.ReadLine();
        }
    }
}