عندي مشكلة في الداتا بايند

السلام عليكم ورحمة الله وبركاته،

لي يومين آحاول حل هذي المشكلة

Error Message: DataBinding: 'System.Data.Common.DataRecordInternal' does not contain a property with the name 'pID'.

وآتمنى مساعدتكم مشكورين في الكود

index.aspx

     <tr>
                                                                <td style="WIDTH: 146px; HEIGHT: 19px"> <asp:label id="lblAreaNew" runat="server" CssClass="BoldBlueLabel">Area:</asp:label>
                                     <asp:label id="Label157" runat="server" CssClass="BoldRedLabel" Visible="False">*</asp:label></td>
                                                                <td style="HEIGHT: 19px"><asp:dropdownlist id="lstAreaNew" runat="server" CssClass="BoldBlueLabel" DataValueField="aID" DataTextField="aDescription" AutoPostBack="True"></asp:dropdownlist></td>
                                                        </tr>
                                                        <tr id="trAreaLocation" runat="server">
                                                                <td style="WIDTH: 146px; HEIGHT: 19px"> <asp:label id="lblPoleNoNewByPost" runat="server" CssClass="BoldBlueLabel">Post No:</asp:label>
                                     <asp:label id="Label30" runat="server" CssClass="BoldRedLabel" Visible="False">*</asp:label></td>
                                                                <td style="HEIGHT: 19px">
                                            <asp:dropdownlist id="lstPoleNoNewByPost" runat="server" CssClass="BoldBlueLabel" DataValueField="pLocation" DataTextField="pID"
                                                                                AutoPostBack="True"></asp:dropdownlist>
                                                                                <%--<asp:label id="lblLocationNewByPost" runat="server" CssClass="BoldBlueLabel">Location\Street:</asp:label><asp:label id="Label31" runat="server" CssClass="BoldBlueLabel"><%=Location%></asp:label>--%>
                                                                                 <asp:label id="lblLocationNewByPost" runat="server" CssClass="BoldBlueLabel">Location\Street:</asp:label>
                                    <asp:dropdownlist id="lstLocationNewByPost" runat="server" 
                                        CssClass="BoldBlueLabel" DataValueField="lID"
                                                                                DataTextField="lDescription" AutoPostBack="True" Enabled="False"></asp:dropdownlist>
                                        </td>
                                                        </tr>

index.aspx.vb

    Sub BindPost()
        lstPoleNoNewByPost.DataSource = objOrgs.sp_slbrs_GetPostByAreas(lstAreaNew.SelectedValue)
        lstPoleNoNewByPost.DataBind()
        Response.Write(lstAreaNew.SelectedValue)
        BindLocationByPost()
    End Sub

OrgDB.vb

    Public Function sp_slbrs_GetPostByAreas(ByVal intAreaID As Integer) As SqlDataReader
        ' Create Instance of Connection and Command Object
        Dim myConnection As New SqlConnection(GetDBConnectionString())

        ' Generate Command Object based on Method
        Dim myCommand As SqlCommand = SqlCommandGenerator.GenerateCommand(myConnection, _
            CType(MethodBase.GetCurrentMethod(), MethodInfo), _
            New Object() {intAreaID})

        ' Execute the command
        myConnection.Open()
        Dim result As SqlDataReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection)

        ' Return the datareader 
        Return result
    End Function

Stored Procedure

USE [DbpPWR03]
GO
/****** Object:  StoredProcedure [dbo].[sp_slbrs_GetPostByAreas]    Script Date: 12/18/2011 15:15:30 ******/
SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER OFF
GO

ALTER PROCEDURE [dbo].[sp_slbrs_GetPostByAreas] 
        -- Add the parameters for the stored procedure here
        @intAreaID int
AS
BEGIN
        -- SET NOCOUNT ON added to prevent extra result sets from
        -- interfering with SELECT statements.
        SET NOCOUNT ON;

    -- Insert statements for procedure here
        SELECT @intAreaID

SELECT     slbrs_tlkpPoles.pID
FROM         slbrs_tlkpArea CROSS JOIN
                      slbrs_tlkpLocations CROSS JOIN
                      slbrs_tlkpPoles
WHERE     (slbrs_tlkpArea.aID = @intAreaID) AND (slbrs_tlkpLocations.lArea = slbrs_tlkpArea.aID) 
AND (slbrs_tlkpPoles.pLocation = slbrs_tlkpLocations.lID)

END