C# GUI, have to display a huge table and make it sortable

I am making a small C# GUI application that reads table-like (cells, rows, columns) data from a binary file and displays it to the end user. Some files are very small (5 columns / 10 rows), but some are very big (245 columns and almost 50,000 rows).

The one and only method I found to easily display a MsExcel-like table was DataGridView. I was really happy with it when I tried the small files, but as soon as I tried with the huge one it went OOM before it even finished loading (and I had more than 4 GB of free memory).

After that though I found out its VirtualMode, and it was really fast. However unfortunately columns were no longer sortable and that is a must.

So, what can I do to obtain performance similar to DataGridView's virtual mode but have it sortable as well? (If you have another control in mind it's okay, I don't have to necessarily use DataGridView)

Also, please note that:

• The binary files were not designed or produced by me. I have no control over their format.
• The data 开发者_运维技巧is not in a database.
• My end users shouldn't have to install a database and import the data there.

You can handle the sorting by yourself and sort the datasource of datagridview with one of the "standard" sorting algorithm.

If you use List, you can use a "Sort()" method. However every collection can by sorted by yourself.

Look for some third party contols. I've used Janus (www.janusys.com) and DevExpress (www.devexpress.com) for grids and they work great.