[DotNetDevelopment] datagrid rowtype

[R]

I have to develop an application where users can enter target values
for each quarter of the next 5 fiscal years. These target values can
be a check mark or a numeric value. The first column on the tabel is a
description of the taget and the rest of the columns are quarter
targets.
Hence, the first row of the table can be a checkbox, but the next row
can be a textbox for entering numeric value.
I know we can specify column types but how can we set rowtype.