Sharepoint 2010 - 更新大型列表，处理非常缓慢并超时

Question

我有一种情况，我必须根据记录是否有打开或关闭的项目，将源记录列表状态列更新为打开或关闭 - 项目列表可以有多个项目链接到源记录通过项目中源记录的 ID 和客户 ID，代码是检索客户项目，然后检查是否有结束日期，如果没有 - 它打开 - 如果有 - 它关闭。这些共享点列表很大

我编写的代码基本上允许我指定一个开始 ID，然后当我单击运行按钮时它会在停止之前处理这么多记录 - 我把它放在适当的位置，因为这个过程非常缓慢，甚至超时，但我不明白为什么它这么慢而且这么好..不稳定 - 如果我尝试处理超过 150 条记录 - 它会超时，服务器本身是一个带有 24gb 内存的八核系统，所以我不认为它是服务器，这可能是我的代码。

    protected void Button1_Click(object sender, EventArgs e)
    {
        SPWeb web = SPControl.GetContextWeb(this.Context);
        string SPsiteUrl = SPContext.Current.Web.Url;
        Label1.Text = "Running";
        int start;
        start = Convert.ToInt32(TextBox1.Text);
        start = int.Parse(TextBox1.Text);
        int end = start + 150;
        int count = 0;

        using (SPSite oSite = new SPSite(SPsiteUrl))
        {
            using (SPWeb oWeb = oSite.OpenWeb("/Client"))
            {
                // get lists
                SPList oList = oWeb.Lists["Source Records"];
                SPList pList = oWeb.Lists["Project"];

                // query Source Records 
                string sQuery = @"<Where><And><Geq><FieldRef Name='ID' /><Value Type='Number'>" + start + "</Value></Geq><Leq><FieldRef Name='ID'/><Value Type='Number'> "+ end +"</Value></Leq></And></Where>";
                string sViewFields = @"<FieldRef Name='ID' />";
                string sViewAttrs = @"Scope=""Recursive""";
                uint iRowLimit = 0;

                var oQuery = new SPQuery();
                oQuery.Query = sQuery;
                oQuery.ViewFields = sViewFields;
                oQuery.ViewAttributes = sViewAttrs;
                oQuery.RowLimit = iRowLimit;

                SPListItemCollection collListItems = oList.GetItems(oQuery);

                // for each item

                foreach (SPListItem oListItem in collListItems)
                {
                    // get the client id 

                    int id = oListItem.ID;

                        count = count + 1; 
                        //Label1.Text = "Checking record" + id;
                        bool isopen = false;
                        // for each client id access the projects list
                        // query the closed date
                        string Query = @"<Where><Eq><FieldRef Name=""Client_x003a_ID"" /><Value Type=""Text"">" + id + "</Value></Eq></Where>";
                        string pViewFields = @"<FieldRef Name=""End_x0020_Date"" />";
                        string pViewAttrs = @"Scope=""Recursive""";
                        uint pRowLimit = 0;
                        var pQuery = new SPQuery();
                        pQuery.Query = Query;
                        pQuery.ViewFields = pViewFields;
                        pQuery.ViewAttributes = pViewAttrs;
                        pQuery.RowLimit = pRowLimit;
                        SPListItemCollection ListItems = pList.GetItems(pQuery);

                        foreach (SPListItem ListItem in ListItems)
                        {
                            try
                            {
                                DateTime enddate = (DateTime)ListItem["End_x0020_Date"];
                                if (enddate != null)
                                {
                                    isopen = false;
                                }
                                // else if the date is null set the open to true
                                else
                                {
                                    isopen = true;
                                }
                            }
                            catch
                            {
                                string enddate = null;
                                if (enddate == null)
                                {
                                    // if the end date is present set project closed to true
                                    isopen = true;
                                }
                            }

                        // if project is open
                        if (isopen)
                        {
                            oWeb.AllowUnsafeUpdates = true;
                            SPListItem itemupdate = oWeb.Lists["Source Records"].Items.GetItemById(id);
                            itemupdate["Status"] = "Open";
                            itemupdate.Update();
                            oWeb.AllowUnsafeUpdates = false;
                            // set records on source record to open
                        }
                        //else // project is closed
                        //{
                        //    oWeb.AllowUnsafeUpdates = true;
                        //    SPListItem itemupdate = oWeb.Lists["Source Records"].Items.GetItemById(id);
                        //    itemupdate["Status"] = "Closed";
                        //    itemupdate.Update();
                        //    oWeb.AllowUnsafeUpdates = false;
                        //    // set the record to closed 
                        //}
                    }
                }
                Label1.Text = "Finished Number of records checked: " + count + " of " + collListItems.Count;
            }
        }
    }'

Answer 1

而不是

SPListItem itemupdate = oWeb.Lists["Source Records"].Items.GetItemById(id);

试试这个：

SPListItem itemupdate = oWeb.Lists["Source Records"].GetItemById(id);

Answer 2

您需要更新嵌套循环的代码。而不是这个：

foreach (SPListItem item1 in sPList.GetItems(sPQuery1))

尝试使用这个：

SPListItemCollection items1 = sPList.GetItems(sPQuery1);
foreach (SPListItem item1 in items1)

详情请参考此blog post。

更新：您必须尝试摆脱嵌套循环。我认为您可以通过将源列表中的引用添加到项目列表中来实现这一点，并参考那里的End Date 列。