There's no way to acheive this with the built-in functionality of the grid. You might be able to achieve is by setting ColHeaderLines to 2 and then using a DrawFilter to handle the drawing of the text. Is that what you want  - to always use 2 lines?

Or do you also want the header to be one line if it's wide enough for all of the text to fit - sort've like a MaximumColHeaderLines? That would be extremely complicated and require you to get involved in measuring each header in advance to determine the number of lines needed and then making a second pass to draw the text.

Hi Mike.

I'm trying to show 2 header lines.
I used ColHeaderLines and WrapHeaderText.
If I use WrapHeaderText and my column width is very small, then I see more than 2 lines in the column headers, so I turned that off.
But then only one header line is used, except if I put a newline character somewhere in my text.
This shouldn't be necessary... 

I've whipped up a quick sample with a Label control with a height that can fit 2 lines of text
AutoSize = false
AutoEllipsis = true

When the text cannot fit on one line, it automatically wraps to 2 lines, but the label is never resized.
Because AutoSize is disabled, the label's height never becomes higher than 2 lines.

Is the same behaviour possible with the Column Header text?