/// <summary>
/// Reads a field, as a decimal.
/// </summary>
/// <param name="key">The column</param>
/// <returns>The value</returns>
/// <exception cref="InvalidCastException"></exception>
public decimal?GetDecimal(string key)
{
string value = GetCellText(key);
if (string.IsNullOrEmpty(value))
{
return(null);
}
decimal result;
if (!ExcelCellFormatter.TryParseDecimal(value, out result))
{
throw new InvalidCastException();
}
return(result);
}
