Using RetrieveRecordChangeHistoryRequest to get Audit Detail in Dynamics 365 CE

Just sharing a sample code to retrieve the Audit Detail using RetrieveRecordChangeHistoryRequest.

</p>
<p>RetrieveRecordChangeHistoryRequest changeRequest = new RetrieveRecordChangeHistoryRequest();<br />
changeRequest.Target = new EntityReference("entitySchemaName", "entityId"));<br />
RetrieveRecordChangeHistoryResponse changeResponse =<br />
(RetrieveRecordChangeHistoryResponse)_service.Execute(changeRequest);</p>
<p>AuditDetailCollection auditDetailCollection = changeResponse.AuditDetailCollection;</p>
<p>foreach (AttributeAuditDetail attrAuditDetail in auditDetailCollection.AuditDetails)<br />
{<br />
var auditRecord = attrAuditDetail.AuditRecord;</p>
<p>Console.WriteLine("Entity: " + ((EntityReference)auditRecord.Attributes["objectid"]).LogicalName);<br />
Console.WriteLine("Operation: " + auditRecord.FormattedValues["operation"]);<br />
Console.WriteLine("Action: " + auditRecord.FormattedValues["action"]);</p>
<p>var newValueEntity = attrAuditDetail.NewValue;</p>
<p>foreach(var attrNewValue in newValueEntity.Attributes)<br />
{<br />
Console.WriteLine("New Key: " + attrNewValue.Key + "New Value: " + attrNewValue.Value);<br />
}</p>
<p>var oldValueEntity = attrAuditDetail.OldValue;</p>
<p>foreach (var attrOldValue in oldValueEntity.Attributes)<br />
{<br />
Console.WriteLine("Old Key: " + attrOldValue.Key + "Old Value: " + attrOldValue.Value);<br />
}<br />
}</p>
<p>

The record whose Audit History we are retrieving :

Output :

AuditDetail.AuditRecord :

AuditDetail.OldValue n NewValue:

Hope it helps..