private string DrawColumnNames(int columns)
        {
            var stringBuilder = new StringBuilder();

            stringBuilder.Append("__ ");
            for (int i = 0; i < columns; i++)
            {
                stringBuilder.Append(ColumnUtility.GetColumnLetter(i));
                AppendEmptySpaceAtTheEnd(stringBuilder);
            }

            return(stringBuilder.ToString());
        }
        private bool ValidateColumn(string input)
        {
            var column = input.First();

            try
            {
                ColumnUtility.GetColumnNumber(column.ToString().ToUpper());
            }
            catch (ArgumentOutOfRangeException)
            {
                return(false);
            }

            return(true);
        }
        public FieldCoordinates(string input)
        {
            Column = ColumnUtility.GetColumnNumber(input.First().ToString().ToUpper());

            var row = (int.Parse(input[1..]) - 1);