WEB API - File upload with json data

Keyur Mehta

7y9.5k

Hello to all,

I am trying to make a web API in c# for sending an email. My API is ready to send an email with the body part. Now I am trying to implement attachment. I have to upload attachment files to the server and I studied many documents to upload file on the server. I also got the success to upload files with MultiPart Async. But can anyone suggest me that how can I handle the upload files and also send the JSON data in a single request? Means when I call the API to send the email I have to send the data like, From email address, to address, body part. And also I want to upload the attachment file in the same request.

I appreciate the suggestion.

Thank You.

4 Replies

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Keyur Mehta7y ago
Hello Ahay,

Thank you for your response. But I can see that you are sending the data in the file header. Is there any other way to send the JSON data in the same request.
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Rajeesh Menoth7y ago
Hi,

Please have a look at my sending email with attachment article may be this will give you some idea.

Reference :

https://www.c-sharpcorner.com/UploadFile/2a6dc5/send-multiple-email-with-attachment-using-Asp-Net-with-C-Sharp/
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Ajay Gohil7y ago
File Upload Web API:
[HttpPost]
[Route("api/DocumentUpload/MediaUpload")]
public async Task MediaUpload()
{
// Check if the request contains multipart/form-data.
if (!Request.Content.IsMimeMultipartContent())
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
var provider = await Request.Content.ReadAsMultipartAsync(new InMemoryMultipartFormDataStreamProvider());
NameValueCollection formData = provider.FormData;
IList files = provider.Files;
HttpContent file1 = files[0];
var thisFileName = file1.Headers.ContentDisposition.FileName.Trim('\"');
////-------------------------------------For testing----------------------------------
//to append any text in filename.
//var thisFileName = file1.Headers.ContentDisposition.FileName.Trim('\"') + DateTime.Now.ToString("yyyyMMddHHmmssfff"); //ToDo: Uncomment this after UAT as per Jeeevan
//List tempFileName = thisFileName.Split('.').ToList();
//int counter = 0;
//foreach (var f in tempFileName)
//{
// if (counter == 0)
// thisFileName = f;
// if (counter > 0)
// {
// thisFileName = thisFileName + "_" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + "." + f;
// }
// counter++;
//}
////-------------------------------------For testing----------------------------------
string filename = String.Empty;
Stream input = await file1.ReadAsStreamAsync();
string directoryName = String.Empty;
string URL = String.Empty;
string tempDocUrl = WebConfigurationManager.AppSettings["DocsUrl"];
if (formData["ClientDocs"] == "ClientDocs")
{
var path = HttpRuntime.AppDomainAppPath;
directoryName = System.IO.Path.Combine(path, "ClientDocument");
filename = System.IO.Path.Combine(directoryName, thisFileName);
//Deletion exists file
if (File.Exists(filename))
{
File.Delete(filename);
}
string DocsPath = tempDocUrl + "/" + "ClientDocument" + "/";
URL = DocsPath + thisFileName;
}
using (Stream file = File.OpenWrite(filename))
{
input.CopyTo(file);
file.Close();
}
var response = Request.CreateResponse(HttpStatusCode.OK);
response.Headers.Add("DocsUrl", URL);
return response;
}
+1
Guest User7y ago
You could send the attachment encoded as base64 in your JSON.
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