SPChangeCollection.LastChangeToken property

Gets the change token that corresponds to the last change in the collection.

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

Syntax

'Declaration
Public ReadOnly Property LastChangeToken As SPChangeToken
    Get
'Usage
Dim instance As SPChangeCollection
Dim value As SPChangeToken

value = instance.LastChangeToken
public SPChangeToken LastChangeToken { get; }

Property value

Type: Microsoft.SharePoint.SPChangeToken
An SPChangeToken object that represents the last change token.

Remarks

The change token that is returned is the value of the ChangeToken property of the SPChange object indexed at Count – 1 in the change collection. When you are fetching changes in batches, you can use this token as the starting point for the next batch.

Examples

The following example is a simple console application that demonstrates how to retrieve all changes from the current change log.

using System;
using Microsoft.SharePoint;

namespace Test
{
   class ConsoleApp
   {
      static void Main(string[] args)
      {
         using (SPSite siteCollection = new SPSite("http://localhost"))
         {
            long total = 0;
            SPChangeToken token = null;

            // Get the first batch of changes.
            SPChangeCollection changes = siteCollection.ContentDatabase.GetChanges(token);
            // Loop until the end of the log is reached.
            while (changes.Count > 0)
            {
               total += changes.Count;

               // Go get another batch.
               token = changes.LastChangeToken;
               changes = siteCollection.ContentDatabase.GetChanges(token);
            }

            Console.WriteLine("{0:#,#} changes", total);
         }
         Console.Write("\nPress ENTER to continue...");
         Console.ReadLine();
      }
   }
}
Imports System
Imports Microsoft.SharePoint

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

         Dim total As Long = 0
         Dim token As SPChangeToken = Nothing

         ' Get the first batch of changes.
         Dim changes As SPChangeCollection = siteCollection.ContentDatabase.GetChanges(token)

         ' Loop until the end of the log is reached.
         While changes.Count > 0

            total += changes.Count

            ' Go get another batch.
            token = changes.LastChangeToken
            changes = siteCollection.ContentDatabase.GetChanges(token)

         End While

         Console.WriteLine("{0:#,#} changes", total)

      End Using

      Console.Write(vbCrLf + "Press ENTER to continue...")
      Console.ReadLine()

   End Sub
End Module

See also

Reference

SPChangeCollection class

SPChangeCollection members

Microsoft.SharePoint namespace

FetchLimit

Other resources

Using the Change Log