FetchXml System.OutOfMemory 异常

Question

正如我从 Google 搜索中了解到的，MSCRM 2011 最多检索 5000 个实体，但我希望我的所有实体都来自营销列表。正如网上所写，在 HKLM\Software\Microsoft\MSCRM 上创建“TurnOffFetchThrottling”字段并将值设置为 1 可以解决此 5000 限制问题（此外，我在注册表中添加了 MaxRowsPerPage 字段并将其值设置为大于 5000，但它也不起作用）。我试过了，我得到了 System.OutOfMemory Exception 错误。顺便说一句，当我删除“”并获得 id 属性代码时效果很好，但我需要所有属性。这是我的 fetchxml 代码：

enter code here
string fetchXml = "<fetch mapping='logical' >"
                  + "<entity name='" + entityType.LogicalName + "'>"
                    + "<all-attributes />"
                    + "<link-entity name='listmember' to='" + entityType.LogicalName + "id" + "' from='entityid'>"
                        + "<filter>"
                          + "<condition attribute='listid' operator='eq' value='" + chosenMarketingListGuid + "'/>"
                        + "</filter>"
                    + "</link-entity>"
                  + "</entity>"
                + "</fetch>";

我又尝试了一件事，我把 fetchxml 改成了：

enter code here
string fetchXml = "<fetch mapping='logical' >"
                  + "<entity name='listmember'>"
                    + "<all-attributes />"
                        + "<filter>"
                          + "<condition attribute='listid' operator='eq' value='" + chosenMarketingListGuid + "'/>"
                        + "</filter>"
                  + "</entity>"
                + "</fetch>";

正如所见，我尝试仅检索成员列表而不是联系人/潜在客户/帐户实体类型，并且它有效！但是，我需要联系人/潜在客户/帐户实体类型而不是成员列表。 如果有人能帮助我走出这条黑暗的 MSCRM 隧道，我将不胜感激！

这里，完整的堆栈跟踪：

[OutOfMemoryException：引发了“System.OutOfMemoryException”类型的异常。] System.ServiceModel.Security.SecurityUtils.ReadContentAsBase64（XmlDictionaryReader 阅读器，Int64 maxBufferSize）+197 System.ServiceModel.Security.EncryptedData.ReadCipherData(XmlDictionaryReader reader, Int64 maxBufferSize) +17 System.ServiceModel.Security.EncryptedType.ReadFrom(XmlDictionaryReader reader, Int64 maxBufferSize) +858 System.ServiceModel.Security.WSSecurityOneDotZeroReceiveSecurityHeader.DecryptBody(XmlDictionaryReader bodyContentReader, SecurityToken token) +80 System.ServiceModel.Security.WSSecurityOneDotZeroReceiveSecurityHeader.ExecuteMessageProtectionPass(Boolean hasAtLeastOneSupportingTokenExpectedToBeSigned) +1611 System.ServiceModel.Security.ReceiveSecurityHeader.Process（时间跨度超时，ChannelBinding channelBinding，ExtendedProtectionPolicy extendedProtectionPolicy）+1576 System.ServiceModel.Security.MessageSecurityProtocol.ProcessSecurityHeader(ReceiveSecurityHeader securityHeader, Message& message, SecurityToken requiredSigningToken, TimeSpan timeout, SecurityProtocolCorrelationState[] correlationStates) +205 System.ServiceModel.Security.SymmetricSecurityProtocol.VerifyIncomingMessageCore（消息和消息，字符串演员，时间跨度超时，SecurityProtocolCorrelationState[] 相关状态）+637 System.ServiceModel.Security.MessageSecurityProtocol.VerifyIncomingMessage（消息和消息，TimeSpan 超时，SecurityProtocolCorrelationState[] 相关状态）+371 System.ServiceModel.Channels.SecurityRequestChannel.ProcessReply（消息回复，SecurityProtocolCorrelationState 相关状态，TimeSpan 超时）+471 System.ServiceModel.Channels.SecurityRequestChannel.Request（消息消息，TimeSpan 超时）+175 System.ServiceModel.Dispatcher.RequestChannelBinder.Request(Message message, TimeSpan timeout) +22 System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout) +517 System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation) +88 System.ServiceModel.Channels.ServiceChannelProxy.Invoke（IMessage 消息）+453 System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 类型) +237 Microsoft.Xrm.Sdk.IOrganizationService.RetrieveMultiple（QueryBase 查询）+0 Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy.RetrieveMultipleCore（QueryBase 查询）+626 Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy.RetrieveMultiple（QueryBase 查询）+39 C:\Users\Zafer\Documents\Visual Studio 2010\Projects\IMPlugin\MarketingListHelper.cs:130 中的 IMPlugin.MarketingListHelper.getMembersAndCountOfChosenMarketingList（OrganizationServiceProxy 服务，Guid selectedMarketingListGuid，实体 entityType） C:\Users\Zafer\Documents\Visual Studio 2010\Projects\IMPlugin\IM_SMS.aspx.cs:96 中的 IMPlugin.IM_SMS.fillMainPanel(Double mainPanelHeight) C:\Users\Zafer\Documents\Visual Studio 2010\Projects\IMPlugin\IM_SMS.aspx.cs:42 中的 IMPlugin.IM_SMS.Page_Load(Object sender, EventArgs e) System.Web.Util.CalliHelper.EventArgFunctionCaller（IntPtr fp，对象 o，对象 t，EventArgs e）+14 System.Web.Util.CalliEventHandlerDelegateProxy.Callback（对象发送者，EventArgs e）+35 System.Web.UI.Control.OnLoad(EventArgs e) +91 System.Web.UI.Control.LoadRecursive() +74 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207

Answer 1

存在 5000 限制的原因是作为一个粗略的障碍来防止您遇到的问题。您已经绕过了软件限制，现在需要克服硬件限制（内存不足）...

您没有说明您是如何编写代码或将结果用于什么目的，但我认为执行查询后会有额外的处理。在此基础上，我的建议是您在查询表达式中引入分页，分批处理 5000 条记录。

一个粗略的例子：

// get records to process
string pagingCookie = null;
bool moreRecords = false;
int pageNum = 1;
DataCollection<Entity> myBatchOfRecords;    

bool continueProcessing = true;
while (continueProcessing)
{
    myBatchOfRecords = GetRecords(pageNum, ref pagingCookie, ref moreRecords);

    // process those records
    ProcessRecords(myBatchOfRecords);
    pageNum++;    
    continueProcessing = moreRecords;
}

function DataCollection<Entity> GetRecordsList(int pageNumber, ref string pagingCookie, ref bool moreRecords){
    var query = new QueryExpression(blahblahblah...);
    query.PageInfo = new PagingInfo { 
        Count = 5000, 
        PageNumber = pageNumber, 
        PagingCookie = pagingCookie };
    var results =  myOrgService.RetrieveMultiple(query);
    pagingCookie = matchedContacts.PagingCookie;
    moreRecords = matchedContacts.MoreRecords;
    return results;
}