Random upload error
I have a blazor server app which uses the SfUpload component. I noticed few minor inconveniences when using the component.
Random file validation fail - The component will randomly return that a file type is not allowed. Issue is that I have not specified this parameter hence all files should be allowed. Regardless I noticed that the file is being uploaded anyway.
The same issue happens but with an error message "File failed to upload", file is being uploaded successfully but the component returns an error.
I noticed this behaviour mostly when dealing with .png and .zip files that contain .png.
My code:
<SfUploader AutoUpload="true" AllowMultiple="true">
<Syncfusion.Blazor.Inputs.UploaderEvents ValueChange="OnUpload"></Syncfusion.Blazor.Inputs.UploaderEvents>
</SfUploader>
// Method do upload files to local folder
void OnUpload(Syncfusion.Blazor.Inputs.UploadChangeEventArgs args)
{
currentDirectory = this.sfFileManager?.Path ?? "/";
foreach (var file in args.Files)
{
string path = $"{basePath}/{currentDirectory}/{file.FileInfo.Name}";
if (File.Exists(path))
{
File.Delete(path);
}
FileStream filestream = new FileStream(path, FileMode.Create, FileAccess.Write);
file.Stream.WriteTo(filestream);
filestream.Close();
file.Stream.Close();
}
}
This issue is still present.Sometimes single users on our deployed site will not be able to upload because it says."
File type is not allowed"
The filetype is totally valid and works almost all of the time. There must be something going on here..
This is a persistent issue. A re-deployment of the site fixes the problem. Error handling does not fire because no error has occurred.
Code wise:
private async Task OnUploadAsync(UploadChangeEventArgs args)
{
foreach (var file in args.Files)
{
MemoryStream memory = new MemoryStream();
await file.File.OpenReadStream(long.MaxValue).CopyToAsync(memory);
ImageToUpload = memory.ToArray();
MediaItem.ImageData = ImageToUpload;
}
}
