How to get the value of the linked DROPDOWNLIST on the server side

ghgjjjj

My intermodal menu is the value extracted from the database.


Normal dropdownlist

textbox.SelectedItem.Value

clssmlove

This is how VB works in other languages.
Protected Sub DropDownList1_SelectedIndexChanged (ByVal sender As Object, ByVal e As System.EventArgs) Handles DropDownList1.SelectedIndexChanged
        dim a as string = BlockDropDownList.SelectedValue

 End Sub

ghgjjjj

Do you want to write events in dropdownlist