SPListItem的Url属性返回的不是绝对路径，形式如下面：
http://cary/Lists/Discussion/itemtitle
这种形式是不能作为链接打开的，很多时候我们在取到这个item的同时还要得到这个item的url，比如你筛选出列表中指定的数据并发邮件给相关人员的时候，在邮件的内容中就需要有个这个item的链接。
Moss中提供了一个PAGETYPE枚举，具体如下表：
| 名称 | ?描述 |
| ?PAGE_DEFAULTVIEW | ?Default view. Value=0. |
| ?PAGE_DIALOGVIEW | ?File dialog box view. Value=2. |
| ?PAGE_DISPLAYFORM | ?Display form for list items. Value=4. |
| ?PAGE_DISPLAYFORMDIALOG | ?Display form for a file dialog box. Value=5. |
| ?PAGE_EDITFORM | ?Edit form for list items. Value=6. |
| ?PAGE_EDITFORMDIALOG | ?Edit form for a file dialog box. Value=7. |
| ?PAGE_INVALID | ?Not used. Value= -1. |
| ?PAGE_MAXITEMS | ?Not used. Value=11. |
| ?PAGE_NEWFORM | ?New form for list items. Value=8. |
| ?PAGE_NEWFORMDIALOG | ?New form for a file dialog box. Value=9. |
| ?PAGE_NORMALVIEW | ?Normal view. Value=1. |
| ?PAGE_SOLUTIONFORM | ?Solution form. Value=10. |
| ?PAGE_VIEW | ?View, including both default view and normal view. Value=3. |
我们就可以通过如下代码来得到item的链接：
SPList list = site.Lists.GetList("/Lists/Discussion ");
SPListItem item = list.Items[id];
String strUrl=list.Forms[PAGETYPE.PAGE_DISPLAYFORM].Url + "?ID=" + item.ID
利用这个可以得到下面形式链接：
http://cary/Lists/Discussion/DispForm.aspx?ID=680
这个就可以作为链接打开了.
?
附录：
??????????? DataTable dt = new DataTable();
??????????? dt.Columns.Add("标题");
??????????? dt.Columns.Add("路径");
???????????
??????????? SPSite site = new SPSite("http://sharepoint02:9003");
??????????? SPWeb web = site.OpenWeb();
??????????? SPList list = web.GetList("/Lists/List1");
??????????? String strUrl = "";
??????????? for (int i = 0; i < list.items.count;="">
??????????? {
??????????????? strUrl = list.Forms[PAGETYPE.PAGE_DISPLAYFORM].Url + "?ID=" + list.Items[i].ID;
??????????????? DataRow dr = dt.NewRow();
??????????????? dr["标题"] = list.Items[i].Title;
??????????????? dr["路径"] = "" + list.Items[i].Title + "";
??????????????? dt.Rows.Add(dr);
??????????? }
……