FileUploadErrorEventArgs Class

Provides data for the FileUploadError event.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v22.1.dll

NuGet Package: DevExpress.Blazor

Declaration

public class FileUploadErrorEventArgs :
    FileUploadEventArgs

Related API Members

FileUploadErrorEventArgs is the data class for the following events:

• DxUpload.FileUploadError

Remarks

This class includes the following properties:

• FileInfo - Returns information about a file (the name, size, type, etc.)
• RequestInfo - Returns information about a request’s response (the status and entire message).

The following snippet handles the FileUploadError event and shows a custom error message that is passed from the server.

Razor

<DxUpload Name="myFile" UploadUrl="https://localhost:10000/api/Upload/UploadFile/"
          FileUploadError="@OnUploadError">
</DxUpload>
<div class="alert alert-danger @(ErrorVisible? " visible" : " invisible")">@MyError</div>

@code {
    bool ErrorVisible { get; set; } = false;
    string MyError { get; set; }

    void OnUploadError(FileUploadErrorEventArgs e) {
        MyError = e.RequestInfo.ResponseText;
        ErrorVisible = true;
        InvokeAsync(StateHasChanged);
    }
}

UploadController

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

[Route("api/[controller]")]
public class UploadController : ControllerBase {
    private readonly IWebHostEnvironment _hostingEnvironment;

    public UploadController(IWebHostEnvironment hostingEnvironment) {
        _hostingEnvironment = hostingEnvironment;
    }

    [HttpPost]
    [Route("UploadFile")]
    public ActionResult UploadFile(IFormFile myFile) {
        // Check whether the file can be uploaded.
         // ...
         return BadRequest("An error occured during file upload.");
    }
}

Inheritance

Object

EventArgs

FileUploadEventArgs

FileUploadErrorEventArgs