i using zedgraph to load the date and value from the database(access), to order to convert to double data type, i'm using ToOADate function but eventually my date has become a number such as 33200, can anyone tell me how to convert date to double so it can works n Zedgraph?
Below is the code i use...

Imports System
Imports System.Data
Imports System.Data.OleDb
Public Class Form2
Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

Public Sub New()
MyBase.New()

'This call is required by the Windows Form Designer.
InitializeComponent()

'Add any initialization after the InitializeComponent() call

End Sub

'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub

'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer

'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents zgc As ZedGraph.ZedGraphControl
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.zgc = New ZedGraph.ZedGraphControl
Me.SuspendLayout()
'
'zgc
'
Me.zgc.IsAutoScrollRange = False
Me.zgc.IsEnableHPan = True
Me.zgc.IsEnableHZoom = True
Me.zgc.IsEnableVPan = True
Me.zgc.IsEnableVZoom = True
Me.zgc.IsScrollY2 = False
Me.zgc.IsShowContextMenu = True
Me.zgc.IsShowCursorValues = False
Me.zgc.IsShowHScrollBar = False
Me.zgc.IsShowPointValues = False
Me.zgc.IsShowVScrollBar = False
Me.zgc.IsZoomOnMouseCenter = False
Me.zgc.Location = New System.Drawing.Point(72, 24)
Me.zgc.Name = "zgc"
Me.zgc.PanButtons = System.Windows.Forms.MouseButtons.Left
Me.zgc.PanButtons2 = System.Windows.Forms.MouseButtons.Middle
Me.zgc.PanModifierKeys2 = System.Windows.Forms.Keys.None
Me.zgc.PointDateFormat = "g"
Me.zgc.PointValueFormat = "G"
Me.zgc.ScrollMaxX = 0
Me.zgc.ScrollMaxY = 0
Me.zgc.ScrollMaxY2 = 0
Me.zgc.ScrollMinX = 0
Me.zgc.ScrollMinY = 0
Me.zgc.ScrollMinY2 = 0
Me.zgc.Size = New System.Drawing.Size(392, 208)
Me.zgc.TabIndex = 0
Me.zgc.ZoomButtons = System.Windows.Forms.MouseButtons.Left
Me.zgc.ZoomButtons2 = System.Windows.Forms.MouseButtons.None
Me.zgc.ZoomModifierKeys = System.Windows.Forms.Keys.None
Me.zgc.ZoomModifierKeys2 = System.Windows.Forms.Keys.None
Me.zgc.ZoomStepFraction = 0.1
'
'Form2
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(632, 266)
Me.Controls.Add(Me.zgc)
Me.Name = "Form2"
Me.Text = "Form2"
Me.ResumeLayout(False)

End Sub

#End Region

Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim myConnection As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" & _
"DATA SOURCE=C:\Documents and Settings\Administrator\My Documents\Plantation.mdb;User Id='admin';Password='';")
Dim mySelectQuery As String = "SELECT Date,Last FROM Maxis"
Dim myCommand As New OleDbCommand(mySelectQuery, myConnection)
myConnection.Open()
Dim myReader As OleDbDataReader
myReader = myCommand.ExecuteReader()

Dim junk As ZedGraph.ZedGraphControl
junk = zgc
junk.GraphPane.Title = "Test Case for VB"
junk.IsShowPointValues = True
Dim x(100) As Double
Dim y(100) As Double
Dim i As Integer
' Randomize()


For i = 1 To 100
myReader.Read()
MessageBox.Show((myReader.GetDateTime(0)).ToOADate)
x(i) = (myReader.GetDateTime(0)).ToOADate
y(i) = myReader.GetDouble(1)
Next


junk.GraphPane.AddCurve("Sine Wave", x, y, Color.Blue, ZedGraph.SymbolType.XCross)
junk.GraphPane.AxisFill = New ZedGraph.Fill(Color.White, Color.LightGoldenrodYellow)
junk.AxisChange()

' always call Close when done reading.
myReader.Close()
' Close the connection when done with it.
myConnection.Close()
End Sub

Private Sub zgc_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles zgc.Load

End Sub
End Class