save image in sql database from picturebox in vb 2008

hi,
i want to save an image from picturebox to sql database. for it i have written the code as under:

Code:

Imports System.Data.SqlClient
Imports System.IO
Imports System.Data
Imports System.Data.SqlTypes
Imports System.Drawing.Imaging

Public Class Form1
    Private Sub LinkLabel1_LinkClicked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs) Handles LinkLabel1.LinkClicked
        OpenFileDialog1.Title = "Get Image"
        With OpenFileDialog1
            .Filter = "All Files|*.*|Bitmaps|*.bmp|GIFs|*.gif|JPEGs|*.jpg"
            .FilterIndex = 4
        End With
        If OpenFileDialog1.ShowDialog() = DialogResult.OK Then

            PictureBox1.Image = Image.FromFile(OpenFileDialog1.FileName)
            PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage
            PictureBox1.BorderStyle = BorderStyle.None
        End If

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            Dim txt1 As String = TextBox1.Text
            Dim txt2 As String = TextBox2.Text
            Dim flag As Integer
            Dim ms As New MemoryStream
            PictureBox1.Image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg)
            Dim bytes() As Byte = ms.ToArray
            Dim img As String = Convert.ToBase64String(bytes)
            Dim con As New OleDb.OleDbConnection("provider=sqloledb; server=MICROSOF-E56695\SQLEXPRESS; database=mahaveer; userid=; password=;Trusted_Connection=yes;")
            con.Open()
            Dim cmd As New OleDb.OleDbCommand("insert CheckStaff values('" + txt1 + "','" + txt2 + "','" + img + "')", con)
            flag = cmd.ExecuteNonQuery
            If flag = 1 Then
                MsgBox("Saved..........")
            End If
        Catch ex As Exception
            MsgBox("Exception.........")
            MsgBox(ex.ToString)
        End Try
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Me.Visible = False
        Form2.Visible = True
    End Sub
End Class
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and i also want to get image back on picturebox from sql database , for it i have written this code:
Imports System.Data
Imports System.Data.SqlTypes
Imports System.Drawing.Imaging
Public Class Form2

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            Dim txt1 As String = TextBox1.Text
            Dim ds As New DataSet
            Dim dt As New DataTable

            Dim ms As New MemoryStream
            Dim bytes() As Byte = ms.ToArray
            Dim img As String = Convert.ToBase64String(bytes)
            Dim rbytes() As Byte = Convert.FromBase64String(img)
            Dim rms As New MemoryStream(rbytes, 0, rbytes.Length)

            Dim con2 As New OleDb.OleDbConnection("provider=sqloledb; server=MICROSOF-E56695\SQLEXPRESS; database=mahaveer; userid=; password=;Trusted_Connection=yes;")
            con2.Open()
            Dim cmd As New OleDb.OleDbDataAdapter("select*from CheckStaff where id=1001", con2)
            cmd.Fill(ds, "CheckStaff")
            TextBox2.Text = ds.Tables(0).Rows(0)("id")
            TextBox3.Text = ds.Tables(0).Rows(0)("name")
            PictureBox1.Image = Image.FromStream(ms)
            'PictureBox1.Image = ds.Tables(0).Rows(0)("image")
        Catch ex As Exception
            MsgBox("Exception in getting Records")
            MsgBox(ex.ToString)
        End Try

    End Sub
End Class
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i am trying to get image back in my picturebox... but there is an exception .....
please help me