SPContentTypeUsage.GetUsages method

Returns a list of SPContentTypeUsage objects with information about where the specified content type is in use.

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

public static IList<SPContentTypeUsage> GetUsages(
	SPContentType contentType
)

Parameters

contentType
Type: Microsoft.SharePoint.SPContentType

The content type to be tracked.

Return value

Type: System.Collections.Generic.IList<SPContentTypeUsage>
A collection of SPContentTypeUsage objects.

This method returns a generic list of SPContentTypeUsage objects that contain information about each use of a content type in the site collection. If the content type is not used, the method returns an empty list (Count = 0).

NoteNote

A content type is “used” if any content type derived from it is present in an SPContentTypeCollection collection at the site or list level anywhere within its scope. For more information, see Content Type Scope.

The following example is a console application that gets the usage collection for the built-in content type “Item.” The application counts the number of times it is used as a site content type and the number of times it is used as a list content type, and then prints the totals to the console.

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

namespace Test
{
   class ConsoleApp
   {
      static void Main(string[] args)
      {
         using (SPSite siteCollection = new SPSite("http://localhost"))
         {
            using (SPWeb rootWeb = siteCollection.RootWeb)
            {
               // Get the content type.
               SPContentType contentType =
                  rootWeb.AvailableContentTypes[SPBuiltInContentTypeId.Item];

               //Get the usage collection.
               IList<SPContentTypeUsage> usages = SPContentTypeUsage.GetUsages(contentType);

               // Count the site and list types.
               int listTypes = 0;
               int siteTypes = 0;
               foreach (SPContentTypeUsage usage in usages)
               {
                  if (usage.IsUrlToList)
                     listTypes++;
                  else
                     siteTypes++;
               }

               Console.Write("The content type is inherited by {0} site content types", siteTypes);
               Console.WriteLine(" and {0} list content types.", listTypes);
            }
         }
         Console.Write("\nPress ENTER to continue...");
         Console.ReadLine();
      }
   }
}

When the application is run against a Web site created with the Team Site template, it prints the following output to the console.

The content type is inherited by 33 site content types and 20 list content types.

Press ENTER to continue...
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