Use XRM tooling to delete data

There are two methods available in the CrmServiceClient class for deleting data in Common Data Service: DeleteEntity(String, Guid, Guid) and DeleteEntityAssociation(String, Guid, String, Guid, String, Guid).

DeleteEntity

DeleteEntity is used to remove a single row of data from Common Data Service. To use this method, you need to know the entity schema name you wish to affect, and the GUID of the row you want to remove.

CrmServiceClient svc = new CrmServiceClient(connectionstring);  
  
// Verify that you are connected  
if (svc != null && svc.IsReady)  
{  
    // Delete the entity record  
    svc.DeleteEntity("account", <accountId>);  
}  
else  
{  
    // Display the last error.  
    Console.WriteLine("An error occurred: {0}", svc.LastCrmError);  
  
    // Display the last exception message if any.  
    Console.WriteLine(svc.LastCrmException.Message);  
    Console.WriteLine(svc.LastCrmException.Source);  
    Console.WriteLine(svc.LastCrmException.StackTrace);  
  
    return;  
}  
  

DeleteEntityAssociation

DeleteEntityAssociation removes the many-to-many association between records in entities. In this example, we will remove the association between a record in the lead and account entities.

CrmServiceClient svc = new CrmServiceClient(connectionstring);  
  
// Verify that you are connected  
if (svc != null && svc.IsReady)  
{  
    Guid accountId = new Guid("<Account_GUID>");  
    Guid leadId = new Guid("<Lead_GUID>");  
    string accountLeadRelationshipName= "accountleads_association";   
    svc.DeleteEntityAssociation("account" , accountId, "lead" ,  leadId, accountLeadRelationshipName)  
}  
else  
{  
    // Display the last error.  
    Console.WriteLine("An error occurred: {0}", svc.LastCrmError);  
  
    // Display the last exception message if any.  
    Console.WriteLine(svc.LastCrmException.Message);  
    Console.WriteLine(svc.LastCrmException.Source);  
    Console.WriteLine(svc.LastCrmException.StackTrace);  
  
    return;  
}  
  

See also

Sample: Quick start for XRM Tooling API
Use XRM Tooling to connect to Common Data Service
Use XRM Tooling API to execute actions in Common Data Service