public static bool VerifyDuplication()

in Vault/Explorer/ListViewItemBase.cs [174:193]
16 lines of code
8 McCabe index (conditional complexity)

        public static bool VerifyDuplication(ISession session, string oldName, PropertyObject soNew)
        {
            string newMd5 = soNew.Md5;

            // Check if we already have *another* secret with the same name
            if ((oldName != soNew.Name) && (session.ListViewSecrets.Items.ContainsKey(soNew.Name) &&
                (MessageBox.Show($"Are you sure you want to replace existing item '{soNew.Name}' with new value?", Utils.AppName, MessageBoxButtons.YesNo, MessageBoxIcon.Question, MessageBoxDefaultButton.Button2) != DialogResult.Yes)))
            {
                return false;
            }

            // Detect dups by Md5
            var sameSecretsList = from slvi in session.ListViewSecrets.Items.Cast<ListViewItemBase>() where (slvi.Md5 == newMd5) && (slvi.Name != oldName) && (slvi.Name != soNew.Name) select slvi.Name;
            if ((sameSecretsList.Count() > 0) &&
                (MessageBox.Show($"There are {sameSecretsList.Count()} other item(s) in the vault which has the same Md5: {newMd5}.\nHere the name(s) of the other items:\n{string.Join(", ", sameSecretsList)}\nAre you sure you want to add or update item {soNew.Name} and have a duplication of secrets?", Utils.AppName, MessageBoxButtons.YesNo, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button2) != DialogResult.Yes))
            {
                return false;
            }
            return true;
        }