DataGridView - efficiently add row & column header indices

Hi,

I'm developing a VSPackage (extension for Visual Studio 2010), and I have a tool window that is hosting a DataGridView control.

I have a very large data-set (e.g. 2D array of size 16384 x 16384) that I wish to display on the grid, and I update the data in the view via VirtualMode.

I want to add index to the row header cells and column header cells, so I tried the following:

1. Auto resize via grid methods
   

1. grid.AutoResizeRowHeadersWidth(DataGridViewRowHeadersWidthSizeMode.AutoSizeToDisplayedHeaders);

  2. Iterating through each row & updating:

1. foreach(DataGridViewRow row in grid.Rows){
      row.HeaderCell.Value=(row.Index+1).ToString();}

3. Subscribing to RowsAdded/OnPaint and updating the value there.