fixes user's auto-deletion :-)

src/Yavsc.Server/ViewModels/Account/UnregisterViewModel.cs

@@ -1,8 +1,12 @@
+using System.ComponentModel.DataAnnotations;
+
 namespace Yavsc.ViewModels.Account
 {
     public class UnregisterViewModel
     {
+        [Required]
         public string UserId { get; set; }
+        
         public string ReturnUrl { get; set; }
 
     }

src/Yavsc/Controllers/Accounting/AccountController.cs

@@ -687,7 +687,7 @@ namespace Yavsc.Controllers
         [HttpGet, Authorize]
         public IActionResult Delete()
         {
-            return View();
+            return View(new UnregisterViewModel { UserId = User.GetUserId() });
         }
 
         [HttpGet, Authorize("AdministratorOnly")]

src/Yavsc/Views/Account/Delete.cshtml

@@ -8,6 +8,7 @@
 <form asp-controller="Account" asp-action="Delete" method="post" class="form-horizontal" role="form">
 
     @Html.Hidden("ReturnUrl")
+    @Html.Hidden("UserId")
     <input type="submit" value="@SR["Unregister"]" class="btn btn-default"/>
 </form>