Just sharing a sample code to get the total number of records (e.g. account here)
IOrganizationService orgService = GetOrganizationService();
int totalCount = 0;
QueryExpression query = new QueryExpression("account");
query.ColumnSet = new ColumnSet();
query.Distinct = true;
query.ColumnSet.AddColumn("accountid");
query.PageInfo = new PagingInfo();
query.PageInfo.Count = 5000;
query.PageInfo.PageNumber = 1;
query.PageInfo.ReturnTotalRecordCount = true;
EntityCollection entityCollection = orgService.RetrieveMultiple(query);
totalCount = entityCollection.Entities.Count;
while (entityCollection.MoreRecords)
{
query.PageInfo.PageNumber += 1;
query.PageInfo.PagingCookie = entityCollection.PagingCookie;
entityCollection = orgService.RetrieveMultiple(query);
totalCount = totalCount + entityCollection.Entities.Count;
}
MessageBox.Show(totalCount.ToString());
Hope it helps
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it’s work on account Entity
i change the QueryExpression to other Entity,
when i got the error “Paging cookie is required when trying to retrieve a set of records on any high pages”
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i found the problem,the target field must include the primary key
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While this certainly works, it is not a very efficient solution. You are downloading and enumerating all accounts in the system when all you really want is the total count. Instead I would suggest you take a look at FetchXML aggregation: https://msdn.microsoft.com/en-us/library/gg309565.aspx#count
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