private void RefreshColumnList()
{
LvColumns.ClearItems();
var columns = _columnCrud.GetAll(null);
foreach (var column in columns)
{
var answers = column.PossibleAnswers.Aggregate("", (current, answer) => current + (answer + ','));
answers = answers.Substring(0, answers.Length - 1);
var row = new ListViewItem(new[] { column.Name, answers });
LvColumns.AddRow(row, column._id);
}
ClearColumnPropertyFields();
}