Delete completed envelope via sdk

Question

Is it possible to delete a completed envelope via c# sdk? My business logic need something like this.

I've tried to void it, but unsuccessfully, It appears that only in-progress envelopes can be voided.

Answer 1

// Delete an envelope
ApiClient apiClient = new ApiClient(basePath);
// You will need to obtain an access token using your chosen authentication method
apiClient.Configuration.DefaultHeader.Add("Authorization", "Bearer " + accessToken);
FoldersApi foldersApi = new FoldersApi(apiClient);
string envelopeId = "9e2b1deb-xxxx-xxxx-xxxx-2540322a31c4";
FoldersRequest folderRequest = new FoldersRequest();
folderRequest.EnvelopeIds = new List<string>();
folderRequest.EnvelopeIds.Add(envelopeId);
foldersApi.MoveEnvelopes(accountId, "recyclebin", folderRequest);

More information https://www.docusign.com/blog/developers/common-api-tasks-delete-and-undelete-envelope