ASP.Net-Select particular item in dropdown list

Item in a dropdown list can be selected by using either of the following lines:

• DropDownList1.SelectedIndex = DropDownList1.Items.IndexOf(DropDownList1.Items.FindByText(<Enter here Text>));
• DropDownList1.SelectedIndex = DropDownList1.Items.IndexOf(DropDownList1.Items.FindByValue(<Enter here value>));