I recently finished a project that required some pretty complicated querying between entities to get at the data.

What I found is that I was making too many calls to get linked data between EntityReferences in my code to the server.

To improve the performance of these calls I made use of the Addlink functionality on the QueryExpression.

Whereas before I was making two calls to get at my entity data, now I was only going to make one.

My initial query looked like this

QueryExpression query = new QueryExpression(); query.EntityName = "ENTITY"; query.Criteria.AddCondition(new ConditionExpression("ATTR_FILTER1", ConditionOperator.Equal, APPID)); query.Criteria.AddCondition(new ConditionExpression("ATTR_FILTER2", ConditionOperator.Equal, SearchId)); query.ColumnSet = new ColumnSet(new string[] { ENT_LOOKUP_ID, ENT_LOOKUP_ID2 }); 

var plink = query.AddLink("ENTITY2", ENT_LOOKUP_ID2D , ENT_LOOKUP_ID2 , JoinOperator.Inner); plink.EntityAlias = "PH"; plink.Columns.AddColumns("ATTR_FILTER4", "ATTR_FILTER5");

When executed as a normal query, this in turn

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I wanted to build a data populator for Dynamics that created a bunch of custom records and did some associations between them.

(The reasoning is so I could be sure I was always validating the same thing).

To do this, I wanted to use the Bulk API.  The Bulk API has a limit of 1000 requests per message so in addition to bulk loading my requests, I needed to ensure that multiple requests could be queued up and handled by the server.

Here is some of the sample code I wrote for this interaction.

public void BulkDispatchCreateRequests<T>(List<T> requests)
 {
 int MaxBatchSize = 999;
 bool CreateBatchRequest = true;

ExecuteMultipleRequest requestWithResults = null;

for (int i = 0; i < requests.Count(); i++)
 {
 if (CreateBatchRequest)
 {
 requestWithResults = new ExecuteMultipleRequest()
 {
 // Assign settings that define execution behavior:															
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I never thought I’d have a case when I’d need to work with over 5,000 records from the Dynamics SDK.

The scenario here is that I was trying to reproduce some production issues and validate out some code changes with a higher threshold of objects.  However, as I started testing, I noticed I wasn’t bringing back everything and had hit the that magical 5,000 limit.

Without wanting to change it, I modified by query to support the retrieval of 5,000+ items that would return to my service to be worked on.

bool KeepSearching = true;
 EntityCollection results = null;
 Dictionary <Guid, Entity> Accessors = new Dictionary<Guid, Entity>();

QueryExpression query = new QueryExpression();
 query.EntityName = "contact";
 query.Criteria.AddCondition(new ConditionExpression("contactid", ConditionOperator.Equal, ContactId));
 query.ColumnSet = new ColumnSet(new string[] { "contactid", "fullname"});
 query.PageInfo = new PagingInfo();
  query.PageInfo.PageNumber =															
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