/// <summary>
/// 是否合规判断方法
/// </summary>
/// <param name="value"></param>
/// <param name="validationContext"></param>
/// <returns></returns>
protected override ValidationResult?IsValid(object?value, ValidationContext validationContext)
{
ValidationResult?ret = null;
if (value != null)
{
var file = (IBrowserFile?)value;
if (file != null)
{
Localizer = JsonStringLocalizerFactory.CreateLocalizer <Upload <object> >();
if (Extensions.Any() && !Extensions.Contains(Path.GetExtension(file.Name), StringComparer.OrdinalIgnoreCase))
{
var errorMessage = Localizer?["FileExtensions", string.Join(", ", Extensions)];
ret = new ValidationResult(errorMessage?.Value, new[] { validationContext.MemberName ! });
/// <summary>
/// 构造函数
/// </summary>
public FileValidationAttribute()
{
Localizer = JsonStringLocalizerFactory.CreateLocalizer <Upload>();
}