Partager via


SPChangeContentType Class

Represents a change to a content type.

Inheritance Hierarchy

System.Object
  Microsoft.SharePoint.SPChange
    Microsoft.SharePoint.SPChangeContentType

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

Syntax

<SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel := True)> _
<SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel := True)> _
Public NotInheritable Class SPChangeContentType _
    Inherits SPChange

Dim instance As SPChangeContentType
[SharePointPermissionAttribute(SecurityAction.InheritanceDemand, ObjectModel = true)]
[SharePointPermissionAttribute(SecurityAction.LinkDemand, ObjectModel = true)]
public sealed class SPChangeContentType : SPChange

Examples

The following example is a console application that queries the change log for all add, delete, and update operations on content types in a site collection. The application enumerates the changes returned by the query and, for each change, reports the name of the changed content type, the date of the change, and the type of change.

Imports System
Imports Microsoft.SharePoint

Module ConsoleApp
   Sub Main()
      Using siteCollection As SPSite = New SPSite("http://localhost")
         Using webSite As SPWeb = siteCollection.RootWeb

            ' Construct a query
            Dim query As New SPChangeQuery(False, False)

            ' object type
            query.ContentType = True

            ' change types 
            query.Add = True
            query.Delete = True
            query.Update = True

            Dim total As Long = 0
            While True
               Dim changes As SPChangeCollection = siteCollection.ContentDatabase.GetChanges(query)

               total += changes.Count

               For Each change As SPChange In changes

                  ' Get the content type (if it still exists)
                  Dim contentTypeChange As SPChangeContentType = CType(change, SPChangeContentType)
                  Dim contentType As SPContentType = _
                      webSite.AvailableContentTypes(contentTypeChange.Id)

                  ' The change might have been to delete the content type
                  Dim contentTypeName As String
                  If contentType Is Nothing Then
                     contentTypeName = "Unknown"
                  Else
                     contentTypeName = contentType.Name
                  End If

                  Console.WriteLine(vbCrLf + "{0} content type was changed on {1}.", _
                                    contentTypeName, change.Time.ToShortDateString())
                  Console.WriteLine("Type of change: {0}", change.ChangeType.ToString())

               Next change

               ' Break out of the loop when we fetch the last batch of changes
               If changes.Count < SPChangeCollection.CountLimit Then
                  Exit While
               End If

               ' Go get another batch of changes starting where we left off
               query.ChangeTokenStart = changes((changes.Count - 1)).ChangeToken

            End While

            Console.WriteLine(vbCrLf + "Total changes = {0:#,#}", total)

         End Using
      End Using
      Console.Write(vbCrLf + "Press ENTER to continue...")
      Console.ReadLine()
   End Sub
End Module
using System;
using Microsoft.SharePoint;

namespace Test
{
   class ConsoleApp
   {
      static void Main(string[] args)
      {
         using (SPSite siteCollection = new SPSite("http://localhost"))
         {
            using (SPWeb webSite = siteCollection.RootWeb)
            {
               // Construct a query
               SPChangeQuery query = new SPChangeQuery(false,  // limit object types
                                                       false); // limit change types

               // object type 
               query.ContentType = true;

               // change types 
               query.Add = true;
               query.Delete = true;
               query.Update = true;

               long total = 0;
               while (true)
               {
                  SPChangeCollection changes = siteCollection.GetChanges(query);

                  total += changes.Count;

                  foreach (SPChange change in changes)
                  {
                     // Get the content type (if it still exists)
                     SPChangeContentType contentTypeChange = (SPChangeContentType)change;
                     SPContentType contentType = 
                         webSite.AvailableContentTypes[contentTypeChange.Id];

                     // The change might have been to delete the content type
                     string contentTypeName;
                     if (contentType == null)
                        contentTypeName = "Unknown";
                     else
                        contentTypeName = contentType.Name;

                     Console.WriteLine("\n{0} content type was changed on {1}.", 
                                       contentTypeName, change.Time.ToShortDateString());
                     Console.WriteLine("Type of change: {0}", change.ChangeType.ToString());
                  }

                  // Break out of loop if we have the last batch
                  if (changes.Count < SPChangeCollection.CountLimit)
                     break;
                  // Otherwise, go get another batch
                  query.ChangeTokenStart = changes[changes.Count - 1].ChangeToken;
               }

               Console.WriteLine("\nTotal changes = {0:#,#}", total);


            }
         }
         Console.Write("\nPress ENTER to continue...");
         Console.ReadLine();
      }
   }
}

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

SPChangeContentType Members

Microsoft.SharePoint Namespace