Hi,
so with in the save event you can get the current tab
TabControl.SelectedTab
but your challenge would be something different that is how you will find each DataGrid and TextBox because each object name would be different.
Solution :
foreach(Control Clt in [Your Tab ID].SelectedTab.Controls)
{
if(Clt is TextBox)
{
}
if(Clt is DataGridView)
{
}
}
Thanks
Suvabrata