Imports System.Xml
Imports System.Data.SqlClient
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim connetionString As String
        Dim connection As SqlConnection
        Dim adapter As SqlDataAdapter
        Dim ds As New DataSet
        Dim sql As String

        connetionString = "Data Source=servername;Initial Catalog=databsename;User ID=username;Password=password"
        connection = New SqlConnection(connetionString)
        sql = "select * from Product"
        Try
            connection.Open()
            adapter = New SqlDataAdapter(sql, connection)
            adapter.Fill(ds)
            connection.Close()
            ds.WriteXml("Product.xml")
            MsgBox("Done")
        Catch ex As Exception
            MsgBox(ex.ToString)
        End Try

    End Sub
End Class