unable to get header row about corefxlab

[liugaocn]

Thank you for replying. I don't use Jupyter, I use Visual Studio and Rider.
I will be very happy to contribute when I get a better understanding.

[liugaocn]

since nobody answers.

[pgovind]

Sorry! I must've missed this issue. Can you elaborate a little bit more on what you want? Do you just want to see the column names? If you are using Jupyter, you can just execute dataframe_variable_name in a cell and (if you also have the formatter set up) you should see the column names in the output. If you are not in a notebook, dataframe_variable_name.Columns (DataFrameColumnCollection.cs)stores the column names inside it internally. They are just not exposed publicly at the moment. If you put up a PR to create a public property that exposes the column names, we'd be happy to review it!

[liugaocn]

@pgovind Maybe this would work.

public List<string> GetColumnNames()
{
    // df is a dataframe.
    DataFrameColumnCollection dataFrameColumnCollection = df.Columns;
    List<string> columnNames = new List<string>(); // A list of all columnNames
    foreach (var column in dataFrameColumnCollection)
    {
        columnNames.Add(column.Name);
    }

    return columnNames;
}``

[pgovind]

1. I would call the API ColumnNames" and make it a property instead of a method. I would also define this method in DataFrame.cs`
2. I would change the return type to IReadOnlyList<string> so that the returned list is immutable
3. In the implementation, I think you can just do return Columns._columnNames;