Navigate and wait for webbrowser response with sendkeys - vb.net

Question

Is it possible to open webpage, navigate once/click button and navigate page for the second time without having to use three buttons (everytihing is working fine with three buttons)?
I tried sleep (doesn't work) and SendKeys.SendWait (also not working).
Here is the code :
Dim browser As New WebBrowser
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
With browser
browser.Name = "mybrowser"
.Dock = DockStyle.Fill
.Url = New Uri("http://pretraga2.apr.gov.rs/ObjedinjenePretrage/Search/Search")
.Visible = True
End With
Me.Controls.Add(browser)
browser.Focus()
'browser.Focus()
SendKeys.SendWait("{TAB}" & "{TAB}" & "08727988" & "{ENTER}") ' & "{TAB}" & "{ENTER}")
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
browser.Focus()
SendKeys.Send("{TAB}" & "{TAB}" & "20084693" & "{ENTER}") ' & "{TAB}" & "{ENTER}")
SendKeys.SendWait("{TAB}" & "{TAB}" & "{TAB}" & "{TAB}" & "{ENTER}")
End Sub
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
browser.Focus()
SendKeys.Send("{TAB}" & "{TAB}" & "{TAB}" & "{TAB}" & "{ENTER}")
End Sub

Answer 1

Yes I think this is possible, but you have to wait till the browser finished loading. What browser-control do you use? I used SHDocVw.InternetExplorer in this example:
Public Sub browse(ByVal szURL As String, Optional ByVal bWaitTillDone As Boolean = True)
Dim nTickStart As Long
Dim nTickEnde As Long = 0
Dim i As Integer = 0
Do
Try
IE.Navigate(szURL)
If bWaitTillDone Then
nTickStart = System.Environment.TickCount
While IE.Busy
fnSleepMS(15)
nTickEnde = System.Environment.TickCount
If nTickEnde - nTickStart > IEBrowser.nMaxWaitSeconds * 1000 Then
Throw New Exception("Browse hat zu lange gedauert!")
End If
End While
End If
Exit Do
Catch ex As Exception
i += 1
If i >= 5 Then
Throw New Exception("IEBrowser.browse(): " & szURL & "--> " & ex.Message)
Else
LOG.add("IEBrowser.browse() - Versuch (" & i & ")" & ex.Message)
fnSleep(1, LOG)
End If
End Try
Loop
End Sub
Using this browser-control you can read out all ahref-Tags and Buttons and click them directly, so you are able to build up a sequence.
Hope I understood you right and this helps a bit. But please tell which browser-control you are using an in which environment (Framework + Visual Studio)