Done with CoreData working. Saving, updating and deleting are working correct now

Schedule ICTIS/Main/Views/CreatedClassView.swift

@@ -8,8 +8,11 @@
 import SwiftUI
 
 struct CreatedClassView: View {
-    let _class: ClassModel
+    @ObservedObject var _class: ClassModel
+    var provider = ClassProvider.shared
     var body: some View {
+        let existingCopy = try? provider.viewContext.existingObject(with: _class.objectID)
+        if let check = existingCopy {
             HStack(spacing: 10) {
                 VStack {
                     Text(getTimeString(_class.starttime))
@@ -37,6 +40,7 @@ struct CreatedClassView: View {
             .cornerRadius(20)
             .shadow(color: .black.opacity(0.25), radius: 4, x: 2, y: 2)
         }
+    }
 }
 
 #Preview {

Schedule ICTIS/Main/Views/ScheduleView.swift

@@ -62,7 +62,6 @@ struct ScheduleView: View {
                                     CreatedClassView(_class: _class)
                                         .onTapGesture {
                                             selectedClass = _class
-                                            print(selectedClass)
                                         }
                                 }
                             }

Schedule ICTIS/Main/Views/Sheets/CreateEditClassView.swift

@@ -141,10 +141,10 @@ struct CreateEditClassView: View {
                         Button {
                             do {
                                 try delete(vm._class)
+                                dismiss()
                             } catch {
                                 print(error)
                             }
-                            dismiss()
                         } label: {
                             HStack {
                                 Spacer()
@@ -194,7 +194,6 @@ struct CreateEditClassView: View {
                 try context.save()
             }
         }
-        
     }
 }
 

Schedule ICTIS/Provider/ClassProvider.swift

@@ -24,7 +24,10 @@ final class ClassProvider {
     }
     
     var newContext: NSManagedObjectContext {
-        persistentContainer.newBackgroundContext()
+        //persistentContainer.newBackgroundContext()
+        let context = NSManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
+                context.persistentStoreCoordinator = persistentContainer.persistentStoreCoordinator
+                return context
     }
     
     private init() {