Subclassing DataGrid

[David Rainsford]

I would like to make a DataGrid control but with some modifications.

Firstly, I would like all fields that come out of the database to be
editable at all times.
I would also like another row (this one non-editable) on the Datagrid which
shows the average or total values (and I want to be able to specify which
columns this will work for)
I would also like another column (again non-editable) which will also show
average or total values from specified columns

For example (damn this newsreader won't use a monospaced font - if you have
the same problem, copy and paste into notepad to see my example more
clearly)

Project Jan Feb Avg
foo {0.1} {0.3} 0.4
bar {0.5} {0.25} 0.75
TOTAL 0.6 0.55 1.15



The values in {} are editable and stored in the database. The other
numerical values are dynamically calculated and recalculated every time a
field is edited.

Is this realistic? Is subclassing the DataGrid web control the way to go
with this, or is there an easier way to achieve what I want to do?

Thanks in advance for your advice,


David

 

[Alvin Bruney [MVP]]

It's one approach. I'd only use it if I intended to release the control to
other folk. If it is for one project, you can just customize the itemcreated
and itemdatabound event handlers to give you what you want.