questions about datagridview

[Deepak Sakpal]

DataGridView1.Columns("Column1").DefaultCellStyle.Format = "c"

[sphericalx]

Q1: if i had pre-added all the column header. how is it possible that when i doubleclick on the empty cell in "ID" column, a form dialog appear? whereas if i doubleclick on any of the other column, nothing will happen.
_______________________________________________________
|Employee |StartTime |ID |Mins |Type |Description |Price |Total |
|________|_________|__|____|_____|_________|____|_____|

Q2: and how can i add values into specify cells?
For Example:

Add '200' into ID, '3' into Mins, 'P' into Type, 'Body Massage' into Description, '$20.00' into Price. If first row is empty, it will be added into the specific cell in row 0. But if Row 1 is alr filled, it will be placed into row 1 instead.

|Employee |StartTime |ID |Mins |Type |Description |Price |Total |
|________|_________|___|_____|______|__________|_____|______|