Добавил страницу с отчетом по диагнозам

Polyclinic/PolyclinicWebAppImplementer/Controllers/HomeController.cs

@@ -117,6 +117,20 @@ namespace PolyclinicWebAppImplementer.Controllers
                 return View();
             }
         }
+        [HttpGet]
+        [HttpPost]
+        public IActionResult DiagnosesReport()
+        {
+            if (HttpContext.Request.Method == "POST")
+            {
+                return View();
+            }
+            else
+            {
+                return View();
+            }
+        }
+
 
         [ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
         public IActionResult Error()

Polyclinic/PolyclinicWebAppImplementer/SiteMenuItems.cs

@@ -14,10 +14,11 @@
         public static (string Url, string Title) Privacy = ("Privacy", "Политика приватности");
         public static (string Url, string Title) AddRecipeToCourse = ("AddRecipeToCourse", "Привязка рецепта");
         public static (string Url, string Title) GetMedicamentsByDiagnoses = ("GetMedicamentsByDiagnoses", "Лекарства по болезням");
+        public static (string Url, string Title) DiagnosesReport = ("DiagnosesReport", "Отчет по болезням");
 
         public static List<(string Url, string Title)> MenuItemsOrder = new List<(string Url, string Title)>
         {
-            Index, Courses, Diagnoses, Symptomes, Login, Register, AddRecipeToCourse, GetMedicamentsByDiagnoses
+            Index, Courses, Diagnoses, Symptomes, Login, Register, AddRecipeToCourse, GetMedicamentsByDiagnoses, DiagnosesReport
         };
     }
 }

Polyclinic/PolyclinicWebAppImplementer/Views/Home/DiagnosesReport.cshtml

@@ -0,0 +1,3 @@
+@{
+    ViewBag.SelectedSiteMenuItem = SiteMenuItems.Diagnose;
+}