Dynamically accessing the top <td> attributes in a DataGrid

[foldface]

Hi
Taking the DataGrid as a table:
(1) I can access the <tr> attributes via

DataGrid1.HeaderStyle.Width = 301; // and similiar

(2) I can access the <td> attributes of the main body cells via

DataGridItem a = DataGrid1.Items[0];
a.Cells[0].Attributes.Add("width", "50");

or similiar

(3) I can access the body, i.e. between <td> and </td> of any cell
via ITemplate children

The problem is I want to access the top <td> attributes, i.e. those
in the header. Is there any way of doing that?

I also want to set the column widths dynamically of an empty DataGrid,
the above would enable me to accomplish that, is there any other way of
doing this.
NB web forms only. Have found lots of answers for windows forms

Ta
F

 

[foldface]

I also want to set the column widths dynamically of an empty DataGrid,

Nb. I also need to set the widths to be something like

50, 100, 0*

but I can't see anyway of setting a Unit to be "0*" as its a generic thing
and I think only tables support this

Ta
F

 

[foldface]

itemdatabound event is the way to go, something like this

private void DataGrid1_ItemDataBound(object sender, DataGridItemEventArgs e)
{
// get complete access to every td attribute and text content via this!
foreach(TableCell cell in e.Item.Cells)
{
cell.Attributes.Add("width", "99");
}
}