private async Task OnAvatarUpload(UploadFile file)
{
// 示例代码，使用 base64 格式
if (file != null && file.File != null)
{
var format = file.File.ContentType;
if (CheckValidAvatarFormat(format))
{
ReadAvatarToken ??= new CancellationTokenSource();
if (ReadAvatarToken.IsCancellationRequested)
{
ReadAvatarToken.Dispose();
ReadAvatarToken = new CancellationTokenSource();
}
await file.RequestBase64ImageFileAsync(format, 640, 480, MaxFileLength, ReadAvatarToken.Token);
}
else
{
file.Code = 1;
file.Error = "文件格式不正确";
}
if (file.Code != 0)
{
await ToastService.Error("头像上传", $"{file.Error} {format}");
}
}
}
/// <summary>
///
/// </summary>
/// <param name="args"></param>
/// <returns></returns>
protected override async Task OnFileChange(InputFileChangeEventArgs args)
{
CurrentFile = new UploadFile()
{
OriginFileName = args.File.Name,
Size = args.File.Size,
File = args.File,
Uploaded = false
};
CurrentFile.ValidateId = $"{Id}_{CurrentFile.GetHashCode()}";
if (IsSingle)
{
// 单图片模式
DefaultFileList?.Clear();
UploadFiles.Clear();
}
UploadFiles.Add(CurrentFile);
await base.OnFileChange(args);
// ValidateFile 后 IsValid 才有值
CurrentFile.IsValid = IsValid;
if (OnChange != null)
{
await OnChange(CurrentFile);
}
else
{
await CurrentFile.RequestBase64ImageFileAsync(CurrentFile.File.ContentType, 320, 240);
}
}