Posted 8 September 2017, 2:33 pm EST
I was recently profiling my application to see why it works so slowly and singled out AddRowHeaderCellSpan() as the problem. The application creates a lot of rows with hierarchic headers, spanning multiple columns. When I remove the call to the function the application starts to work reasonably but then some of the text in parent cells appear as cut. So, if it were possible to overflow the text to the next cell, it would be fine as the next cell in the parent rows are empty. I tried the setting "AllowCellOverflow" property to true, but it seems not to work on headers. Any suggestions please?
UPDATE: I forgot to add our version: We use Winforms v4.0