public IList <ExcelDynamicColumn> GetColumnsList(DataSet dataSet)
{
if (dataSet == null || dataSet.Tables.Count == 0)
{
return(new List <ExcelDynamicColumn>());
}
if (string.IsNullOrWhiteSpace(_tableName))
{
return(_dataTableColumnsProvider.GetColumnsList(dataSet.Tables[0]));
}
DataTable table = dataSet.Tables[_tableName];
return(table == null ? new List <ExcelDynamicColumn>() : _dataTableColumnsProvider.GetColumnsList(table));
}
public IList <ExcelDynamicColumn> GetColumnsList(IEnumerable data)
{
object firstElement = data?.Cast <object>().FirstOrDefault();
if (firstElement == null)
{
return(new List <ExcelDynamicColumn>());
}
return(_typeColumnsProvider.GetColumnsList(firstElement.GetType()));
}
public IList <ExcelDynamicColumn> GetColumnsList(IEnumerable <object> data)
{
if (data == null)
{
return(new List <ExcelDynamicColumn>());
}
Type genericEnumerable = TypeHelper.TryGetGenericEnumerableInterface(data.GetType());
return(_typeColumnsProvider.GetColumnsList(genericEnumerable.GetGenericArguments()[0]));
}
public IList <ExcelDynamicColumn> GetColumnsList(object dataItem)
{
return(dataItem == null
? new List <ExcelDynamicColumn>()
: _typeColumnsProvider.GetColumnsList(dataItem.GetType()));
}