RadzenUpload and base64

Matteo · July 14, 2020, 2:55pm

Good evening, I was wondering if it was possible to get a base64 from a RadzenUpload.

enchev · July 14, 2020, 2:56pm

No, but you can use RadzenFileInput:
https://blazor.radzen.com/fileinput

Matteo · July 14, 2020, 3:00pm

my problem is that using RadzenFileInput I can only insert small files

enchev · July 14, 2020, 3:02pm

Yes, it can be used for small files only. Large file converted to base64 string will be even larger.

Matteo · July 14, 2020, 3:04pm

using RadzenUpload in which format can I save the data on the db?

enchev · July 15, 2020, 7:39am

The file is received server side in the controller used for upload as IFormFile:

github.com

akorchev/blazor.radzen.com/blob/master/Controllers/UploadController.cs

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

namespace LatestBlazor
{
    [DisableRequestSizeLimit]
    public partial class UploadController : Controller
    {
        [HttpPost("upload/single")]
        public IActionResult Single(IFormFile file)
        {
            try
            {
                // Put your code here
                return Ok(new { Completed = true });
            }
            catch (Exception ex)
            {
                return StatusCode(500, ex.Message);

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you can inject your database context in this controller, read the file and add/update relevant record. In this demo there is an example how to add additional parameter:
https://blazor.radzen.com/example-upload

Matteo · July 15, 2020, 2:48pm

but these are API, I am using a brazor server approach. within these API I will not be able to call the methods present in the components that I need to work my data.

enchev · July 15, 2020, 2:54pm

I'm afraid that I cannot add anything else - check again my previous reply

Matteo · July 15, 2020, 2:59pm

let me explain better, I put your code in a razor component, but I can't make InvokeAsync work, it doesn't call the desired function

enchev · July 15, 2020, 3:04pm

You cannot put this code in a razor component. It's a server-side razor controller. Again, read my reply on how to add parameters to upload, to inject the EF context, to find the relevant record, to read the file and update desires record field.