Retrieve failed entities from ExecuteMultipleResponse method

Question

I am using the Execute Multiple Response class to pass in an Entity Collection for Upsert into Dynamics CRM, I would like to know how to add the failed entity names to a collection and then use exception handling on each of these entities.

Answer 1

Assuming you create your ExecuteMultipleRequest something like this:

var entityCollection; // your EntityCollection
var requests = new ExecuteMultipleRequest();

foreach (var entity in entityCollection.Entities) {
    var upsertRequest = new UpsertRequest { Target = entity };
    requests.Requests.Add(upsertRequest);
}

You should be able to execute the request, iterate through the responses and for each determine whether a fault occurred:

var responses = service.Execute(requests);
var errors = new List<Entity>();

foreach (var response in responses.Responses) {
    if (response.Fault != null) {
        var entity = entityCollection[response.RequestIndex];
        errors.Add(entity);
    }
}

response.RequestIndex is used to access the response's corresponding request by matching their indexes.

responses.Responses contains a collection of ExecuteMultipleResponseItem. Documentation on their properties can be found here.