<p>Is there a simple way to format numbers in a Winforms 1.1 datagrid?  The Format property of the DataGridTextBoxColumn seems to be completely ignored.  I know there is a <a href="http://support.microsoft.com/kb/318581" rel="nofollow noreferrer">solution</a> that involves subclassing a Column control, and it's fairly simple, but was hoping there might be some trick to making the Format property just work.</p>

My personal opinion is that a datagridcolumnstyle is the way to go.  Without seeing the code that you have, I can't say for certain why your formatting isn't taking hold when no style is defined - but mixing in formatting with data calculations and other parts of the code can get very messy very quickly.
Creating a new column style class is very clean, and if you have to use the same formatting again in another datagrid, it's as easy as pie to reuse it.
Here's the
Microsoft Documentation
that may get you started in the right direction.