Upload component, renaming image before sending to server

[Etlikmilso]

Hi, I need some advice. I use Radzen Angular and upload the image to the server in the Upload component. I need to rename the uploaded image before uploading it to the server. Can it be done somehow? I use the application on a tablet and there is an option to insert an image directly from the camera, unfortunately, the camera gives the name image.jpg and I still only have one image on the server. I can't save another one because one and the same one keeps being overwritten.
thanks for the tips on how i can fix it.

[mumfie]

Why not rename it when you save it on the server?

Upload files

[Etlikmilso]

Ok i can rename file here but i need write name file to DB. How i can get back filename ? my method look now :

using System;
using System.IO;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Http;

namespace Test
{
  [Route("upload")]
  public partial class UploadController : Controller
  {
    [HttpPost]
    public ActionResult Post(IFormFile file)
    {
        try
        {
            if (file != null && file.Length > 0)
            {
                string fileName = Guid.NewGuid().ToString() + Path.GetExtension(file.FileName);
              //  string fileName = file.FileName;
                string targetDirectory = Path.Combine(Directory.GetCurrentDirectory(), "Images");
                string targetPath = Path.Combine(targetDirectory, fileName);

                // Vytvoření složky, pokud neexistuje
                if (!Directory.Exists(targetDirectory))
                {
                    Directory.CreateDirectory(targetDirectory);
                }

                using (var stream = new FileStream(targetPath, FileMode.Create))
                {
                    file.CopyTo(stream);
                }

                return StatusCode(200,fileName);
            }
            else
            {
                return StatusCode(400, "No file was selected for upload.");
            }
        }
        catch (Exception ex)
        {
            return StatusCode(500, ex.Message);
        }
    }
  }
}

and how i can read filename from return StatusCode(200,fileName); in my client ?
Thank you

[mumfie]

see the example code

Uploading files

Also is there already a database connection created I can call that was setup when I attached the database to the app as a datasource? Radzen doesn't keep any open connections to the database. However you can inject the EF context that has been created for your data source so you don't need to write SQL and embed the connection string in your code. Here is how this is done (step 4): [Route("api/[controller]/[action]")] public class ServerMethodsController : Controller { private Northwind…

and also

Invoke custom method (Angular)

[Etlikmilso]

Hi so my solution is here

but i had a problem when i wanted to return only fileName as string

  return StatusCode(200,fileName);

And the solution is here

  return StatusCode(200,new{result = fileName.ToString()});

I had to return the fileName as object Now i can read data from event and work with upgraded filename on the client site.
Thank you