Typed Dictionary With SharePoint Web Titles And Typed SPListItem Collection

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Typed Dictionary With SharePoint Web Titles And Typed SPListItem Collection

I use this technique a lot when I am building some aggregation components in custom applications. The goal of the method is to provide a static way to constrcut typed Dictionary collections where the SPWeb.Title acts as the Key, and a typed SPListItem collection is the Value. While there will obviously only exist one unique instance of the SPWeb.Title key, additional SPListItem’s should be appended to their respective key.

In the below, the ItemConsumeAndStructure method has a return type of Dictionary<string, List<SPListItem>>, in accordance with the design goals set forward in the above. There are two parameters being consumed, an IEnumerable<SPList> that represents the set of SPList objects that should be subject to the loop, and a SPView object that’s the view we want to restrict the SPListItemCollection to. Firstly, a temporary dictionary used for the return is built, subsequently a loop will execute against the typed collection hydrating a SPListItemCollection refined using the aforementioned SPView parameter. Recurring through that collection, the dictionary is checked with the SPListItem.SPWeb.Title property is already a key present in the dictionary, and if it’s not instantiate a new List<SPListItem> collection. Adding the SPListItem otherwise to the pre-existing key SPListItem collection completes the requirement.

PLAIN TEXT

C#:

public static Dictionary<string, List<SPListItem>> ItemConsumeAndStructure(IEnumerable<SPList> listofLists, SPView view)Q
{
var dictionary = new Dictionary<string, List<SPListItem>>();
try
{
foreach (SPList list in listofLists)
{
SPListItemCollection items = list.GetItems(view);
foreach (SPListItem item in items)
{
if (!dictionary.ContainsKey(item.Web.Title))
{
dictionary[item.Web.Title] = new List<SPListItem>();
}
dictionary[item.Web.Title].Add(item);
}
}
}
catch (Exception exception)
{
}
return dictionary;
}

Article Or Research Filed Under SharePoint Development.

5 Comments »

don’t forget to remove the try catch….

Comment by Jonas — September 4, 2009 @ 10:48 am
Well, it SHOULD be in there, it’s just generally a developer choice what happens in the latter.

Comment by adam — September 4, 2009 @ 11:16 am
[...] Typed Dictionary With SharePoint Web Titles And Typed SPListItem Collection [...]

Pingback by Links (9/7/2009 « Steve Pietrek – Everything SharePoint) — September 7, 2009 @ 4:10 pm
Hi.
Thanks alot, I spent a day to find a code that allow me to read data from sharepoint view, and I found here finally,
thank you so much

Comment by Joe — March 27, 2010 @ 12:17 pm
np!!

Comment by adam — April 13, 2010 @ 10:04 am