[Feature] ID column

[tomhub]

Hi Dmitry,

Could it be possible to implement ID column in the data viewer, so when horizontally scrolling, the ID column(s) are always shown.

[DmitryMK]

Hi,

It is a good and useful feature to have, I think freezing something like USUBJID will help a lot. But this one is difficult. I have previously tried to do it and it became too complex too fast. In a way, it is possible because row number is exactly this kind of column, but to make it possible for any arbitrary column some work is needed.
There are several reason why:

1. The app uses virtualization for both rows and columns, so only columns which are visible are actually rendered. Theoretically it is still possible, but for example the "row number" column is currently hardcoded in the table view. Logically you can get it dynamically and reduce the width of the virtualized part.
2. There are some feature/tools which exist outside of the table view, so they need to be aware about these frozen columns, so it will require to add extra code in all the related parts, where column position is important.

The library I'm using, supports the pinning natively, but I guess for virtualization, I will need to do more.

I'll keep the issue opened, but this is something I'll not work in the upcoming releases.