/// <summary>
/// Reads the cell values from the rows of the first sheet in the
/// excel document <param name="path">file path</param>
/// , considering the <param name="columns">columns</param> defined.
/// </summary>
/// <param name="path">The full path to the excel file</param>
/// <param name="columns">
/// The excel columns used to define the structure of the excel sheet.
/// If null, then the default columns are used to identify the languages.
/// </param>
internal List <ExcelRow> ReadLanguages(string path, List <ExcelColumn> columns = null)
{
if (string.IsNullOrEmpty(path))
{
throw new Exception(PluginResources.Warning_FilePathNull);
}
if (!File.Exists(path))
{
// create the default languages file
_common.SaveDefaultLanguagesDocument(path);
}
if (columns == null)
{
columns = _common.GetDefaultExcelColumns();
}
// reads the rows from the first sheet
var excelRows = GetExcelRows(path, columns);
return(excelRows);
}
