How do I transfer data from one DB to another DB in using windows service(VB.NET)?

Imports System.Data.SqlClient
Imports System.ComponentModel
Imports System.Configuration.Install
Public Class MyNewService
    Dim con1, con2 As New SqlConnection
    Dim timer1 As Timers.Timer
    Protected Overrides Sub OnStart(ByVal args() As String)
        ' Add code here to start your service. This method should set things
        ' in motion so your service can do its work.
        timer1 = New Timers.Timer()
        con1 = New SqlConnection("Server = STLWKSENG11;" & "initial Catalog = DEV_TEST;" & "Trusted_Connection = yes")
        con1.Open()
        con2 = New SqlConnection("Server = STLWKSENG11;" & "initial Catalog = DEV_TEST2;" & "Trusted_Connection = yes")
        con2.Open()
        timer1.Enabled = True
        timer1.Interval = 10000
        timer1.Start()
    End Sub

    Protected Overrides Sub OnStop()
        ' Add code here to perform any tear-down necessary to stop your service.
        timer1.[Stop]()
        con1.Close()
        con2.Close()
    End Sub
    Private Sub timer1_Elapsed(ByVal sender As Object, ByVal e As System.Timers.ElapsedEventArgs)
        Dim cmd As SqlCommand
        Dim da As SqlDataAdapter = New SqlDataAdapter("Select * from Table1 where [Check]='False'", con1)
        Dim cb As SqlCommandBuilder = New SqlCommandBuilder(da)
        Dim dt As DataTable = New DataTable()
        da.Fill(dt)
        Dim i As Integer

        For Each dr As DataRow In dt.Rows
            cmd = New SqlCommand("Insert into Table_1 values('" & dr(0) & "','" + dr(1).ToString() & "','" & dr(2) & "')", con2)
            i = cmd.ExecuteNonQuery()
            dr(3) = True
        Next

        da.Update(dt)
        cmd.Dispose()
        dt.Dispose()
        da.Dispose()
    End Sub
End Class

Imports System.ComponentModel
Imports System.Configuration.Install

Public Class ProjectInstaller

    Public Sub New()
        MyBase.New()

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

        'Add initialization code after the call to InitializeComponent

    End Sub

End Class