private void InitializePartToCloud() { // 1. Initialize. uploadPartETags = new List <PartETag>(); InitiateMultipartUploadRequest initRequest = new InitiateMultipartUploadRequest(); initRequest.BucketName = this.DestinationBucket; initRequest.Key = this.DestinationFilename; // make it public initRequest.AddHeader("x-amz-acl", "public-read"); initResponse = client.InitiateMultipartUpload(initRequest); }