Alguien q me ayude xfis lo q pasa es q deseaba hacer una aplicacion con la base de datos Pubs q viene en acces 2003 con la tabla Jobs y al tratar de ejecutar me sale un error y no se q puede ser alguien sabe pues aki les de jo el codigo y unas imagenes ojala me puedan ayudar ya q soy noob y x mas q releeo no encuentro el problema

Public Class Form1
    Inherits System.Windows.Forms.Form

    Dim dt As New DataTable
    Dim dv As New DataView
    Dim strcon As String = "database=Pubs;user id=sa"
    Dim strsql As String = "select * from jobs"
    Dim da As New SqlDataAdapter(strsql, strcon)
    Dim cb As New SqlCommandBuilder(da)
    Dim i As Integer
   
 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        da.Fill(dt)
        dt.TableName = "Empleos"
        dv.Table = dt
        DataGrid1.DataSource = dv
        da.InsertCommand = cb.GetInsertCommand
        da.DeleteCommand = cb.GetDeleteCommand
        da.UpdateCommand = cb.GetUpdateCommand
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim dr As DataRow = dt.NewRow
        dr("job_id") = txtjobid.Text
        dr("job_desc") = txtjobdesc.Text
        dr("min_lvl") = txtmin.Text
        dr("max_lvl") = txtmax.Text
        dt.Rows.Add(dr)
        da.Update(dt)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim r As Integer
        For r = 0 To dt.Rows.Count - 1
            If UCase(dt.Rows(r).Item("job_id")) = UCase(txtjobid.Text) Then
                dt.Rows(r).Delete()
                da.Update(dt)
                Exit Sub
            End If
        Next
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        Dim r As Integer
        For r = 0 To dt.Rows.Count - 1
            If UCase(dt.Rows(r).Item("job_id")) = UCase(txtjobid.Text) Then
                dt.Rows(r).BeginEdit()
                dt.Rows(r).Item("job_desc") = txtjobdesc.Text
                dt.Rows(r).Item("min_lvl") = txtmin.Text
                dt.Rows(r).Item("max_lvl") = txtmax.Text
                dt.Rows(r).EndEdit()
                da.Update(dt)
                Exit Sub
            End If
        Next
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        dv.RowFilter = "job_id='" & txtjobid.Text & "'"
        txtjobdesc.Text = dv.Item(0).Item("job_desc")
        txtmin.Text = dv.Item(0).Item("min_lvl")
        txtmax.Text = dv.Item(0).Item("max_lvl")
    End Sub
End Class