how to get the context of current document set in a custom web part placed on document set welcome page?

Question

I want to create a web part to place on a document set web part. How would I get the context of the document set and the documents within the set from within the web part?

thx

Answer 1

The url for the document set welcome page includes an ID in the query string, so you can use this parameter to find the document set:

http://server/MyDocumentLibrary/Forms/MyDocumentSet/docsethomepage.aspx?ID=2

var id = Convert.ToInt32(HttpContext.Current.Request.QueryString["ID"]);
SPListItem item = SPContext.Current.Web.Lists["MyDocumentLibrary"].GetItemById(id);
var dsItem = Microsoft.Office.DocumentManagement.DocumentSets.DocumentSet.GetDocumentSet(item.Folder);

NOTE: You will need to add a reference to Microsoft.Office.DocumentManagement

Answer 2

var item = SPContext.Current.ListItem;

will get you the ListItem, then

var folder = item.folder;

will get you the folder matching the item, and

var docset = DocumentSet.GetDocumentSet(folder);

will get you the document set for that folder. Though most things you might want to do (like getting/setting fields) really only need the listitem or maybe the folder.

Answer 3

http://office.microsoft.com/en-us/sharepoint-server-help/customize-the-welcome-page-for-a-document-set-HA101782474.aspx says "The Document Set Welcome page is a Web Part page that can be edited just as you would edit any Web Part page". Any further questions?