共用方式為


SPChangeQuery class

定義與變更記錄檔,在Microsoft SharePoint Foundation中執行的查詢。

Inheritance hierarchy

System.Object
  Microsoft.SharePoint.SPChangeQuery

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

Syntax

'宣告
Public NotInheritable Class SPChangeQuery
'用途
Dim instance As SPChangeQuery
public sealed class SPChangeQuery

備註

使用SPChangeQuery物件,以定義的查詢,您可以傳遞做為引數的SPListSPWebSPSiteSPContentDatabase類別的GetChanges方法。

SPChangeQuery類別的屬性可以用來指定查詢的篩選器。有兩種類型的屬性: 套用到物件已變更,以及套用至所發生的變更類型的型別。SPChangeQuery建構函式搭配使用這些屬性,定義查詢會傳回特定的資料從變更記錄檔。

Examples

下列範例會印出的已加入至網站集合內的群組,以及要群組的使用者登入名稱的主控台應用程式,它們已新增及變更的日期。

using System;
using Microsoft.SharePoint;

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

               // Set a limit on the number of changes returned on a single trip.
               query.FetchLimit = 500;

               // object type 
               query.Group = true;

               // change type
               query.GroupMembershipAdd = true;

               // Get the users and groups for the site collection.
               SPUserCollection users = rootSite.AllUsers;
               SPGroupCollection groups = rootSite.Groups;

               // Convert to local time.
               SPTimeZone timeZone = rootSite.RegionalSettings.TimeZone;

               // total changes
               int total = 0;

               // Loop until we reach the end of the log.
               while (true)
               {
                  SPChangeCollection changes = siteCollection.GetChanges(query);
                  total += changes.Count; // running total

                  foreach (SPChangeGroup change in changes)
                  {
                     // Try to get the group name.
                     string groupName = String.Empty;
                     try
                     {
                        SPGroup group = groups.GetByID(change.Id);
                        groupName = group.Name;
                     }
                     catch (SPException)
                     {
                        groupName = "Unknown";
                     }

                     // Try to get the user name.
                     string loginName = String.Empty;
                     try
                     {
                        SPUser user = users.GetByID(change.UserId);
                        loginName = user.LoginName;
                     }
                     catch (SPException)
                     {
                        loginName = "Unknown";
                     }

                     // Write to the console.
                     Console.WriteLine("\nDate: {0}", 
                          timeZone.UTCToLocalTime(change.Time).ToString());
                     Console.WriteLine("{0} was added to the {1} group.", 
                          loginName, groupName);
                  }

                  // Break out of loop if we have the last batch.
                  if (changes.Count < query.FetchLimit)
                     break;

                  // Otherwise, go get another batch.
                  query.ChangeTokenStart = changes.LastChangeToken;
               }

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

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

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

            ' Set a limit on the number of changes returned on a single trip.
            query.FetchLimit = 500

            ' Select the object type. 
            query.Group = True

            ' Select the change type.
            query.GroupMembershipAdd = True

            ' Get the users and groups for the site collection.
            Dim users As SPUserCollection = rootSite.AllUsers
            Dim groups As SPGroupCollection = rootSite.Groups

            ' Convert to local time.
            Dim timeZone As SPTimeZone = rootSite.RegionalSettings.TimeZone

            ' total changes
            Dim total As Integer = 0

            ' Loop until we reach the end of the log.
            While True
               Dim changes As SPChangeCollection = siteCollection.GetChanges(query)
               total += changes.Count ' running total
               For Each change As SPChangeGroup In changes

                  ' Try to get the group name.
                  Dim groupName As String = String.Empty
                  Try
                     Dim group As SPGroup = groups.GetByID(change.Id)
                     groupName = group.Name
                  Catch ex As SPException
                     groupName = "Unknown"
                  End Try

                  ' Try to get the user name.
                  Dim loginName As String = String.Empty
                  Try
                     Dim user As SPUser = users.GetByID(change.UserId)
                     loginName = user.LoginName
                  Catch ex As SPException
                     loginName = "Unknown"
                  End Try

                  ' Write to the console.
                  Console.WriteLine(vbCrLf + "Date: {0}", _
                                    timeZone.UTCToLocalTime(change.Time).ToString())
                  Console.WriteLine("{0} was added to the {1} group.", _
                                    loginName, groupName)

               Next change

               ' Break out of loop if we have the last batch.
               If changes.Count < query.FetchLimit Then
                  Exit While
               End If
               ' Otherwise, go get another batch.
               query.ChangeTokenStart = changes.LastChangeToken
            End While

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

         End Using
      End Using

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

   End Sub
End Module

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.

請參閱

參照

SPChangeQuery members

Microsoft.SharePoint namespace