Page.RegisterHi ddenField does not work!

[Dave]

Are there any known restrictions on where Page.RegisterHi ddenField will work? It seems to only work in the Page_Load event...My code below fails to render it in the page's source

I would like these values to be used by some client-side javascript. If I can't use the register methods here, how can I make the data grid's clicked values availble in the Page_Load's Postback? Thanks, Dave

private void dgGrid_ItemComm and(Object src, DataGridCommand EventArgs e

if (e.Item.ItemInd ex >= 0)

//--Get the posted values from the datagrid..
dgPortfolio.Sel ectedIndex = e.Item.ItemInde x
string sId= dgGrid.DataKeys[e.Item.ItemInde x].ToString()
string sName= dgGrid.Selected Item.Cells[2].Text
Page.RegisterHi ddenField("Id", sId)
Page.RegisterHi ddenField("Name ", sName)
}