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

SelectableListView works when programmatically setting selection

ModernKeePass.Application/Entry/Commands/DeleteField/DeleteFieldCommand.cs

@@ -0,0 +1,29 @@
+using MediatR;
+using ModernKeePass.Application.Common.Interfaces;
+using ModernKeePass.Domain.Exceptions;
+
+namespace ModernKeePass.Application.Entry.Commands.DeleteField
+{
+    public class DeleteFieldCommand: IRequest
+    {
+        public string EntryId { get; set; }
+        public string FieldName { get; set; }
+
+        public class DeleteFieldCommandHandler : IRequestHandler<DeleteFieldCommand>
+        {
+            private readonly IDatabaseProxy _database;
+
+            public DeleteFieldCommandHandler(IDatabaseProxy database)
+            {
+                _database = database;
+            }
+
+            public void Handle(DeleteFieldCommand message)
+            {
+                if (!_database.IsOpen) throw new DatabaseClosedException();
+
+                _database.DeleteField(message.EntryId, message.FieldName);
+            }
+        }
+    }
+}

ModernKeePass.Application/Entry/Commands/UpsertField/UpsertFieldCommand.cs

@@ -2,24 +2,24 @@
 using ModernKeePass.Application.Common.Interfaces;
 using ModernKeePass.Domain.Exceptions;
 
-namespace ModernKeePass.Application.Entry.Commands.SetFieldValue
+namespace ModernKeePass.Application.Entry.Commands.UpsertField
 {
-    public class SetFieldValueCommand : IRequest
+    public class UpsertFieldCommand : IRequest
     {
         public string EntryId { get; set; }
         public string FieldName { get; set; }
         public object FieldValue { get; set; }
 
-        public class SetFieldValueCommandHandler : IRequestHandler<SetFieldValueCommand>
+        public class UpsertFieldCommandHandler : IRequestHandler<UpsertFieldCommand>
         {
             private readonly IDatabaseProxy _database;
 
-            public SetFieldValueCommandHandler(IDatabaseProxy database)
+            public UpsertFieldCommandHandler(IDatabaseProxy database)
             {
                 _database = database;
             }
 
-            public void Handle(SetFieldValueCommand message)
+            public void Handle(UpsertFieldCommand message)
             {
                 if (!_database.IsOpen) throw new DatabaseClosedException();
 

ModernKeePass.Application/Entry/Commands/UpsertField/UpsertFieldCommandValidator.cs

@@ -1,10 +1,10 @@
 using FluentValidation;
 
-namespace ModernKeePass.Application.Entry.Commands.SetFieldValue
+namespace ModernKeePass.Application.Entry.Commands.UpsertField
 {
-    public class SetFieldValueCommandValidator: AbstractValidator<SetFieldValueCommand>
+    public class UpsertFieldCommandValidator: AbstractValidator<UpsertFieldCommand>
     {
-        public SetFieldValueCommandValidator()
+        public UpsertFieldCommandValidator()
         {
             RuleFor(v => v.EntryId)
                 .NotNull()