Using AddQueryOption to write oData query in Silverlight (CRM 2011)


The easiest way to write oData query is to make use of this wonderful tool developed by Rhett Clinton:-

The query generated by tool can be used in Jscript. They can also be used to write DataServiceQuery in Silverlight project using AddQueryOption.

Here are few examples: –

  • The query to get the subject and city of all the lead records



Now while writing DataServiceQuery simple set the first parameter of AddQueryOption as $select and the value part of it as the second parameter.

var queryLead = context.LeadSet.AddQueryOption("$select", "Address1_City,Subject") as DataServiceQuery<Lead>;

  • The query to get the subject and city of all the lead records where subject contains string ‘test’



Here we will add two query option one for select and other for filter criteria

var queryLead = context.LeadSet
.AddQueryOption("$select", "Address1_City,Subject")
.AddQueryOption("$filter", "substringof('test',Subject)")
as DataServiceQuery<Lead>;

  • The query to get the subject of all the lead records along with owner’s Business Unit Name (i.e. related entity)



Here we are making use of expand to get the data from the related entity

var queryLead = context.LeadSet
.AddQueryOption("$select", "Subject,lead_owning_user/BusinessUnitId")
.AddQueryOption("$expand", "lead_owning_user")
as DataServiceQuery<Lead>;

To run the query and loop through the records returned we can make use of following code:-

DataServiceCollection<Lead> leads = new DataServiceCollection<Lead>();
leads.LoadCompleted += (s, ea) =>

foreach (Lead lead in leads)



Hope this helps.

Author: Nishant Rana

I love working in and sharing everything about Microsoft.NET technology !

One thought on “Using AddQueryOption to write oData query in Silverlight (CRM 2011)”

  1. You have made some really good points there.
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