Hi, i've build a chart app with XNA primitive, and now i'd like use spritebatch to do a semitrasparent rectangle for select data. They work alone, but when i mix them like in the follow code i get exception
Code:
Option Strict On
Option Explicit On

Imports System.IO
Imports Microsoft.Xna.Framework
Imports Microsoft.Xna.Framework.Graphics
Public Class Form1
    Public Shared test As Integer
    Private grafix As Graphics.GraphicsDevice = Nothing
    Private s_Batch As SpriteBatch
    Private sprite As Texture2D
    Private sprite2 As Texture2D

    Private Function initialize(ByRef surface As PictureBox) As Boolean
        Try
            Dim pparam As New PresentationParameters
            pparam.DeviceWindowHandle = surface.Handle
            pparam.IsFullScreen = False

            Dim grafixAdapt As GraphicsAdapter = GraphicsAdapter.DefaultAdapter

            grafix = New GraphicsDevice(grafixAdapt, GraphicsProfile.HiDef, pparam)


            initialize = True
        Catch ex As Exception
            initialize = False
        End Try
    End Function

    Public Shared Function BitmapToTexture2D(ByVal GraphicsDevice As GraphicsDevice, ByVal image As System.Drawing.Bitmap) As Texture2D
        Dim bufferSize As Integer = image.Height * image.Width * 4

        ' Create new memory stream and save image to stream so    
        ' we don't have to save and read file   
        Dim memoryStream As New System.IO.MemoryStream(bufferSize)
        image.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Png)

        ' Creates a texture from IO.Stream - our memory stream
        memoryStream.Seek(0, SeekOrigin.Begin)
        Dim texture As Texture2D = Texture2D.FromStream(GraphicsDevice, memoryStream, image.Width, image.Height, False)

        memoryStream.Close()
        Return texture
    End Function


    Private Sub Load_Content()
        If IsNothing(grafix) = False Then
            s_Batch = New SpriteBatch(grafix)

            sprite = BitmapToTexture2D(grafix, My.Resources.my_image)
            sprite2 = BitmapToTexture2D(grafix, My.Resources.my_image2)
        Else
            Throw New ArgumentNullException("Grafix")
            Exit Sub
        End If

    End Sub

    Private Sub BackgroundWorker1_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
        Do Until True = False
            grafix.Clear(Color.Black)
            ' Dim newlineORI() As VertexPositionColor = Graphic2D.Set2dLine(x1ori, y1ori, z1, x2ori, y2ori, z2, colorOri) ' 
            Dim newlineORI() As VertexPositionColor = Set2dLine(10, 20, 0, 200, 250, 0, Color.Azure)

            grafix.DrawUserPrimitives(PrimitiveType.LineList, newlineORI, 0, 1) 
               With s_Batch
                .Begin(SpriteSortMode.Deferred, BlendState.AlphaBlend)
                .Draw(sprite, New Rectangle(0, 0, test, 200), Color.White * 0.3F)
                .End()
            End With
            grafix.Present()
        Loop

    End Sub
    Public Shared Function Set2dLine(ByVal x1 As Integer, ByVal y1 As Integer, ByVal z1 As Integer, _
                           ByVal x2 As Integer, ByVal y2 As Integer, ByVal z2 As Integer, _
                           ByVal color As Color) As VertexPositionColor()
        Dim vertices1, vertices2 As New VertexPositionColor

        vertices1.Position = New Vector3(x1, y1, z1)
        vertices1.Color = color
        vertices2.Position = New Vector3(x2, y2, z2)
        vertices2.Color = color

        Return {vertices1, vertices2}
    End Function
    Private Sub SetUpCamera()
        Dim cameraPos = New Vector3(-25, 13, 18)
        Dim viewMatrix = Matrix.CreateLookAt(cameraPos, New Vector3(0, 2, -12), New Vector3(0, 1, 0))
        Dim projectionMatrix = Matrix.CreatePerspectiveFieldOfView(MathHelper.PiOver4, grafix.Viewport.AspectRatio, 1.0F, 200.0F)
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim bool As Boolean = initialize(PictureBox1)

        If bool = True Then
            Call Load_Content()
            ' SetUpCamera()
            BackgroundWorker1.RunWorkerAsync()
        Else
            MessageBox.Show("There was a problem initializing XNA.")
            Me.Close()
        End If
    End Sub

    Private Sub PictureBox1_MouseMove(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseMove
        test = e.Location.X
    End Sub

    Private Sub PictureBox1_Click(sender As System.Object, e As System.EventArgs) Handles PictureBox1.Click

    End Sub
End Class
I get this exception: In order to perform design operations , setting both a vertex shader that a pixel shader on the device. Anyone can help me to solve?