Clear combo box n datagrid

Hello, How to clear e contents in the combo box and datagrid after making the selection and wan to reselect again?
Thanks all for e help....

This will reset the combobox and nothing will be shown till user select some value :

VB Code:

ComboBox1.SelectedIndex = -1

How abt e datagrid? Cos i search finished, got show the records ritez? Then i research again, e old records which i had searched in e beri 1st place, show again n combine with e new search.

How to clear the contents in e datagrid in order to let mi search again?

Thanks for all e help....

Try this , though I didn't test it :

VB Code:

DataGrid1.DataSource = Nothing
DataGrid1.Refresh()