获取列表默认显示表单的绝对URL

Question

我需要有一个listItem的显示形式的绝对网址 - 目前我这样做是以下方式：

在 http://example.com/ ：

item.ParentList.ParentWeb.Url.TrimEnd('/') //"http://example.com"
+ "/" 
+ item.ParentList.DefaultDisplayFormUrl.Trim('/')//"Lists/WorkflowTasks/DispForm.aspx"
+ "?ID=" + item.ID //"?ID=1"

.

这让我得到了正确的URL，意思是 http://example.com/列表/ workflowtasks / disporm.aspx？ID= 1 。 但是，当我的网站集在稍微复杂的主机URL上时，这失败了，例如 http：//示例.com / sites / staysite / statingite / - 来自我的代码的两种方法都返回包含“/ states / staysite / part的网址，以便我最终与 http://example.com/sites/secondsite/sites/secondsite/lists/etc ...

如何以更可靠的方式代码？

Answer 1

There are a couple of methods for this available in the object model without the need to handle the slashes etc yourself, one method using MakeFullUrl:

var fullUrl = item.ParentList.ParentWeb.Site.MakeFullUrl(item.ParentList.DefaultDisplayFormUrl);

Parameters

strUrl

Type: System.String

A string that specifies the server-relative URL.

Return value Type: System.String

A string that contains the full URL.

Answer 2

var parentWebUrl = item.ParentList.ParentWebUrl;
var displayFormUrl = item.ParentList.DefaultDisplayFormUrl;
var itemIdQuery = "?ID=" + item.ID;
var fullUrl = parentWeblUrl.EndWith('/') ? parentWebUrl + displayFormUrl + itemIdQuery : 
                                           parentWebUrl + "/" + displayFormUrl + itemIdQuery

Answer 3

Just shut down my VM and hence can't test but how about using something like SPContext.Current.Web.Url in combination with SPList.DefaultDisplayFormUrl. Note that SPWeb.Url gets the absolute URL for the website.