Additional fields Add, Update and Delete work (too well)

SelectableListView works when programmatically setting selection

WinAppCommon/ViewModels/Items/FieldVm.cs

@@ -0,0 +1,37 @@
+using GalaSoft.MvvmLight;
+using Messages;
+
+namespace ModernKeePass.ViewModels.ListItems
+{
+    public class FieldVm: ViewModelBase
+    {
+        private string _name;
+        private string _value;
+
+        public string Name
+        {
+            get { return _name; }
+            set
+            {
+                MessengerInstance.Send(new EntryFieldNameChangedMessage { OldName = Name, NewName = value, Value = Value });
+                Set(nameof(Name), ref _name, value);
+            }
+        }
+
+        public string Value
+        {
+            get { return _value; }
+            set
+            {
+                MessengerInstance.Send(new EntryFieldValueChangedMessage { FieldName = Name, FieldValue = value });
+                Set(nameof(Value), ref _value, value);
+            }
+        }
+
+        public FieldVm(string fieldName, string fieldValue)
+        {
+            _name = fieldName;
+            _value = fieldValue;
+        }
+    }
+}