validating file upload asp.net core mvc
public class UserViewModel
{
[Required(ErrorMessage = "Please select a file.")]
[DataType(DataType.Upload)]
[MaxFileSize(5* 1024 * 1024)]
[AllowedExtensions(new string[] { ".jpg", ".png" })]
public IFormFile Photo { get; set; }
}asp net core image server
[HttpPost]
public ActionResult RetrieveImage()
{
Image img = db.Images.OrderByDescending
(i=>i.Id).SingleOrDefault();
string imageBase64Data =
Convert.ToBase64String(img.ImageData);
string imageDataURL =
string.Format("data:image/jpg;base64,{0}",
imageBase64Data);
ViewBag.ImageTitle = img.ImageTitle;
ViewBag.ImageDataUrl = imageDataURL;
return View("Index");
}Copyright © 2021 Codeinu
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