使用C＃在Dynamics CRM中分配托管内存失败

Question

我在Dynamics CRM中有1,072,369联系人记录。我需要检索它们然后进行操作。现在，虽然检索我遇到以下异常

未能分配1073741824字节的托管内存缓冲区。可用内存量可能很低。

我增加了10分钟的时间跨度，但没有运气。

我正在寻求你的友善建议/帮助解决它。以下是我的代码片段。

ColumnSet col = new ColumnSet(); 
col.AddColumns("new_name", "accountid", "contactid"); 

       //get Related Record 
       QueryExpression qe = new QueryExpression 
       { 
        EntityName = entity, 
        ColumnSet = col, 
        Criteria = new FilterExpression 
        { 
         Conditions = { 
         new ConditionExpression("accountid",ConditionOperator.NotNull), 
         new ConditionExpression("statecode",ConditionOperator.Equal,0) 
        } 
        } 
       }; 

       EntityCollection ec = sp.RetrieveMultiple(qe); 

Answer 1

你有1,072,369，所以我建议你分批检索这些记录。如果它有助于检索记录，您可以尝试下面的一段代码进行尝试。

  QueryExpression qe = new QueryExpression 
      { 
       EntityName = entity, 
       ColumnSet = col, 
       Criteria = new FilterExpression 
       { 
        Conditions = { 
        new ConditionExpression("accountid",ConditionOperator.NotNull), 
        new ConditionExpression("statecode",ConditionOperator.Equal,0) 
       } 
       } 
      }; 

      qe.PageInfo = new PagingInfo(); 
      qe.PageInfo.PagingCookie = null; 
      qe.PageInfo.PageNumber = 1; 
      qe.PageInfo.Count = 500; 

while (true) 
      { 
       EntityCollection results= sp.RetrieveMultiple(qe); 
       if (results.Entities != null) 
       { 

       } 

       // Check for more records, if it returns true. 
       if (results.MoreRecords) 
       { 
        Console.WriteLine("\n****************\nPage number {0}\n****************", pagequery.PageInfo.PageNumber); 
        Console.WriteLine("#\tAccount Name\t\tEmail Address"); 

        // Increment the page number to retrieve the next page. 
        pagequery.PageInfo.PageNumber++; 

        // Set the paging cookie to the paging cookie returned from current results. 
        pagequery.PageInfo.PagingCookie = results.PagingCookie; 
       } 
       else 
       { 
        // If no more records are in the result nodes, exit the loop. 
        break; 
       } 
      } 

参见此处了解详情：

https://msdn.microsoft.com/en-us/library/gg327917.aspxPage large result sets with QueryExpression

PAGING QUERIES IN DYNAMICS CRM 2011