UpdateCommand event help required please

[Stephen Cairns]

I am very new to programming and in particular datagrids
and am finding it difficult to add code to the event
handler below to run an UpdateCommand on a row in my
datagrid. Could someone please help me out code into this
event handler so as when I click Update the database is
updated with my ammendments in the datagrid.
I would really appreciate your help.

private void DataGrid2_EditCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
DataGrid2.EditItemIndex = e.Item.ItemIndex;
DataGrid2.DataBind();
}

private void DataGrid2_CancelCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)
{
DataGrid2.EditItemIndex = -1;
DataGrid2.DataBind();
}
private void DataGrid2_UpdateCommand(object source,
System.Web.UI.WebControls.DataGridCommandEventArgs e)
{

}