Upload multiple files to blob storage using API in uipath

Hi All,
I am trying to upload multiple files to blob storage at a single time in an file array to blob storage using API in uipath.(client requirement).
But I am facing issue with the file array to upload.

Can anyone help me out.


Hi @Soundarya_V

Welcome to Uipath community

Have a look on the docs

Hope it will helps


hi @Gokul001

I am able to connect with the blob container but unable to upload multiple files at a time. For example I am having 3 files in a folder I am using collection to store all the files. So now I have to attach the collection in the API to upload the files in the blob container.
while attaching I am unable to do it because there is no type called collection in the propeties panel near attachments in the http request activity.

Can you help me out.

I had got a solution of myself through the c# code. below is the code
Need to add few dll’s before using the code

Source code:-

            string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");
          	HttpWebRequest request = (HttpWebRequest)WebRequest.Create(API);
            request.ContentType = "multipart/form-data; boundary=" +boundary;
            request.Method = "POST";
            request.KeepAlive = true;
           Stream memStream = new System.IO.MemoryStream();
           var boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" +boundary + "\r\n");
            var endBoundaryBytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" +boundary + "--");
            string headerTemplate =
              "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
              "Content-Type: application/octet-stream\r\n\r\n";
           for (int i = 0; i < files.Length; i++)
                memStream.Write(boundarybytes, 0, boundarybytes.Length);
                var header = string.Format(headerTemplate, "uplTheFile", files[i]);
                var headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
               memStream.Write(headerbytes, 0, headerbytes.Length);
               using (var fileStream = new FileStream(files[i], FileMode.Open, FileAccess.Read))
                    var buffer = new byte[1024];
                    var bytesRead = 0;
                    while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
                        memStream.Write(buffer, 0, bytesRead);
           memStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
            request.ContentLength = memStream.Length;
           using (Stream requestStream = request.GetRequestStream())
                memStream.Position = 0;
                byte[] tempBuffer = new byte[memStream.Length];
                memStream.Read(tempBuffer, 0, tempBuffer.Length);
                requestStream.Write(tempBuffer, 0, tempBuffer.Length);
           using (var response = request.GetResponse())
				Stream stream2 = response.GetResponseStream();
                StreamReader reader2 = new StreamReader(stream2);
               out_EndResult= new string [] {reader2.ReadToEnd()};
        catch(Exception ex)
        throw ex;

Inputs: Files as array, API that we need to give in the endpoint.

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