protected virtual async Task OnFileSelectedAsync(ChangeEventArgs args)
{
EditContext.NotifyPropertyBusy(Property);
UploadCompletion = 0.01;
var files = await FileReaderService.CreateReference(_fileInput).EnumerateFilesAsync();
if (files.Count() > 1)
{
EditContext.AddValidationMessage(Property, "This editor only supports single files for now.");
}
var file = files.FirstOrDefault();
if (file == null)
{
return;
}
var fileInfo = await file.ReadFileInfoAsync();
IEnumerable <string> validationMessages;
try
{
validationMessages = await FileUploadHandler.ValidateFileAsync(new FileInfoModel(fileInfo));
}
catch
{
validationMessages = new[] { "Failed to validate file." };
}
if (!validationMessages.Any())
{
try
{
using var uploadedFile = await UploadFileToTempFileAsync(file, 8192, fileInfo.Size, (completion) =>
{
Console.WriteLine(completion);
if (completion - UploadCompletion > 1)
{
UploadCompletion = completion;
StateHasChanged();
}
});
UploadCompletion = 0.0;
StateHasChanged();
var value = await FileUploadHandler.SaveFileAsync(new FileInfoModel(fileInfo), uploadedFile);
await SetValueFromObjectAsync(value);
EditContext.NotifyPropertyFinished(Property);
}
catch
{
validationMessages = new[] { "Failed to upload file." };
}
}
if (validationMessages.Any())
{
foreach (var message in validationMessages)
{
EditContext.AddValidationMessage(Property, message);
}
EditContext.NotifyPropertyFinished(Property);
UploadCompletion = 0.0;
StateHasChanged();
return;
}
}