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How to retrieve more than 50 records through OData in CRM 2011?

By xrmlabs webmaster on 11/1/2013
If you are using OData end points to retrieve records in MS CRM 2011 then you might be surprised to know that the maximum number of records that can be retrieved in a single retrieve call is 50. This is because the page size is fixed to Max 50 records.

When working with large set of data we were faced with a similar problem. Thankfully MS CRM Odata has a next link which can be used to retrieve next 50 records. The following example shows how to retrieve more than 50 records using Odata end point. In this example we push the first 50 records in an array and retrieve next page results using the URL (quot;__nextquot;) provided in the JSON response object.

Note we are using Jquery and JSON2 in the following example. We presume you have already added JQuery and JSON to your Form. To know more about how to add jquery please follow this blog entry (How toadd JQuery support to CRM-2011)


The javascript code is such as follows.

var relatedContact = [];
function onloadFetchAllContactRecords(){
var serverUrl = Xrm.Page.context.getServerUrl();
var oDataUrl = serverUrl + quot;/xrmservices/2011/OrganizationData.svc/ContactSet?$select=EMailAddress1,FirstName,LastName$filter=StateCode/Value eq 0quot;;
GetContactRecords(oDataUrl);
var totalRecords = relatedContact.length;
}
function GetContactRecords(url){
jQuery.ajax({
type: quot;GETquot;,
contentType: quot;application/json; charset=utf-8quot;,
datatype: quot;jsonquot;,
url: url,
async: false,
beforeSend: function(XMLHttpRequest){
XMLHttpRequest.setRequestHeader(quot;Acceptquot;, quot;application/jsonquot;);
},
success: function (data, textStatus, XmlHttpRequest){
if(data data.d != null data.d.results != null){
var objrecord = data.d;
var records = objrecord.results;
insertRecordsToArray(records);
FetchRecordsCallBack(objrecord);
}
},
error: function (XmlHttpRequest, textStatus, errorThrown){
alert(quot;An error has occurredquot;);
}
});
}
function insertRecordsToArray(records){
for (var i = 0; i < records.length; i++){
relatedContact.push(records[i]);
}
}
function FetchRecordsCallBack(objrecord){
if(objrecord.__next != null){
var url = objrecord.__next;
GetContactRecords(url);
}
}

Hope this helps.
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