topic QueryTask - Finding Attribute field types in ArcGIS API for Silverlight Questions https://community.esri.com/t5/arcgis-api-for-silverlight-questions/querytask-finding-attribute-field-types/m-p/541845#M13844 <HTML><HEAD></HEAD><BODY><SPAN>I would like to know if there is a more elegant way of finding the attribute field types when using a QueryTask.&nbsp; The problem we are having is that if the feature layer is dynamic, we do not know the field types within the layer on the server--we basically have to return all 500 records with a query such as SELECT * From Dataset Where OBJECTID &gt; 0.&nbsp; Is there a method where we can SELECT Top 1 from dataset, or something similar?</SPAN><BR /><SPAN>Thanks,</SPAN></BODY></HTML> Mon, 06 Dec 2010 17:09:46 GMT PaulLeedham 2010-12-06T17:09:46Z QueryTask - Finding Attribute field types https://community.esri.com/t5/arcgis-api-for-silverlight-questions/querytask-finding-attribute-field-types/m-p/541845#M13844 <HTML><HEAD></HEAD><BODY><SPAN>I would like to know if there is a more elegant way of finding the attribute field types when using a QueryTask.&nbsp; The problem we are having is that if the feature layer is dynamic, we do not know the field types within the layer on the server--we basically have to return all 500 records with a query such as SELECT * From Dataset Where OBJECTID &gt; 0.&nbsp; Is there a method where we can SELECT Top 1 from dataset, or something similar?</SPAN><BR /><SPAN>Thanks,</SPAN></BODY></HTML> Mon, 06 Dec 2010 17:09:46 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/querytask-finding-attribute-field-types/m-p/541845#M13844 PaulLeedham 2010-12-06T17:09:46Z Re: QueryTask - Finding Attribute field types https://community.esri.com/t5/arcgis-api-for-silverlight-questions/querytask-finding-attribute-field-types/m-p/541846#M13845 <HTML><HEAD></HEAD><BODY><SPAN>The REST API does not support this type of query. Only the following parameters may be provided (even for 10.01) </SPAN><A href="http://services.arcgisonline.com/ArcGIS/SDK/REST/query.html">http://services.arcgisonline.com/ArcGIS/SDK/REST/query.html</A><SPAN>.</SPAN><BR /><BR /><SPAN>You would have to use LINQ query to narrow the results in the ExecuteCompleted or simply retrieve the first feature and ignore the rest of the results.</SPAN></BODY></HTML> Mon, 06 Dec 2010 17:54:15 GMT https://community.esri.com/t5/arcgis-api-for-silverlight-questions/querytask-finding-attribute-field-types/m-p/541846#M13845 JenniferNery 2010-12-06T17:54:15Z