【VISUAL VB NET】open and Write a new ms word or document

Imports System Imports System.Collections.Generic Imports System.ComponentModel Imports System.Data Imports System.Drawing Imports System.Linq Imports System.Text Imports System.Threading.Tasks Imports System.Windows.Forms ' make sure that using System.Diagnostics; is included Imports System.Diagnostics ' make sure that using System.Security.Principal; is included Imports System.Security.Principal ' make sure that using Microsoft.Office.Interop.Word; is included & added references Office 14 version Imports Microsoft.Office.Interop.Word ' make sure that using System.IO; Imports System.IO ' make sure that using System.Threading; Imports System.Threading Public Class Form1 Public filePath As String = "c:\msword.docx" Public Sub New() MyBase.New() InitializeComponent() End Sub Private Sub button1_Click(sender As Object, e As EventArgs) Handles button1.Click Process.Start("C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Microsoft Office\Microsoft Word 2010.lnk") End Sub Public Sub openWordDocument(filePath As String) Dim missing As Object = System.Reflection.Missing.Value 'create a document in this path Dim fileName As Object = filePath Dim wordApp As Object = Activator.CreateInstance(Type.GetTypeFromProgID("Word.Application")) 'Setup our Word.Document Dim wordDoc As Object = wordApp.[GetType]().InvokeMember("Documents", System.Reflection.BindingFlags.GetProperty, Nothing, wordApp, Nothing) 'Set Word to be not visible wordApp.[GetType]().InvokeMember("Visible", System.Reflection.BindingFlags.SetProperty, Nothing, wordApp, New Object() {True}) 'Open the word document fileName Dim activeDoc As Object = wordDoc.[GetType]().InvokeMember("Open", System.Reflection.BindingFlags.InvokeMethod, Nothing, wordDoc, New [Object]() {fileName}) End Sub Private Sub button2_Click(sender As Object, e As EventArgs) Handles button2.Click ' create file If Not File.Exists(filePath) Then Using st As FileStream = System.IO.File.Create(filePath) Thread.Sleep(700) End Using openWordDocument(filePath) Else MessageBox.Show("Document already exists!" & vbLf & "Delete """ & filePath & """ to create new document!") End If End Sub End Class