select a specific Item???

How to select a specific Item in a DropDownList in asp.net?

using SelectedIndexChanged I can select any items in a DropDownList that i bind in my database but the result gives me the first item always which is the value of index 0 or first item.

the result should be whatever item that i selected in my DropDownList...

VB Code:

s = lst.Items(lst.SelectedIndex).Text

When i false my AutoPostBack properties, I can now select any item in my DropDownList.

How would i post the selected item to my textbox?

I tried this code in SelectedIndexChanged but it wont work at all.
"STRinfo.Text = STRinfo.SelectedItem.Value"

VB Code:

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Response.Write(drp.Items(drp.SelectedIndex).Text)
        Response.Write(drp.SelectedItem.Text)
    End Sub

I tried it and it works fine...

it shud be something like this:
STRinfo.Text = dropdownname.SelectedValue