DropDownList Issue

[zezu10]

I currently have a DropDownList that I have populated through a StoredProcedure.

It populates ok, however, when I seleted an item down the list, it always returns the one at the top?

Could anyone give me any idea of what may be causing this?

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
        FillDealerDDL()
    End Sub

    Sub FillDealerDDL()
        Dim GetReader As New GeneralReaderQuery(Constants.LiveGVP, "GetVehiclesFillDDL1")
        Me.ddlDealerName.DataSource = GetReader.FetchReader
        Me.ddlDealerName.DataTextField = "DealerName"
        Me.ddlDealerName.DataValueField = "DealerName"
        Me.ddlDealerName.DataBind()
    End Sub