Multi-pane browser window with VB.Net - vb.net

I am trying to implement a project in VB.NET wherein a user can see two browser window panes side by side. It is very similar to placing two browser windows side by side on the screen, one docking to the left side, and the other on the right side. Only in this case, there's only one application. I'm having the following problems with my code
On pressing enter, the browser is not navigating to the website for both the panes
The controls on the left pane are not working. Only the Go button works for the left pane.
Here is my code (can't post pictures yet):
Public Class Form1
Dim int As Integer = 0
Dim int1 As Integer = 0
Private Sub Loading(ByVal sender As Object, ByVal e As Windows.Forms.WebBrowserProgressChangedEventArgs)
ToolStripProgressBar1.Maximum = e.MaximumProgress
ToolStripProgressBar1.Value = e.MaximumProgress
End Sub
Private Sub Loading1(ByVal sender1 As Object, ByVal e1 As Windows.Forms.WebBrowserProgressChangedEventArgs)
ToolStripProgressBar2.Maximum = e1.MaximumProgress
ToolStripProgressBar2.Value = e1.MaximumProgress
End Sub
Private Sub Done(ByVal sender As Object, ByVal e As Windows.Forms.WebBrowserDocumentCompletedEventArgs)
TabControl1.SelectedTab.Text = CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).DocumentTitle
TextBox1.Text = CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Url.ToString
End Sub
Private Sub Done1(ByVal sender1 As Object, ByVal e1 As Windows.Forms.WebBrowserDocumentCompletedEventArgs)
TabControl2.SelectedTab.Text = CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).DocumentTitle
TextBox2.Text = CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Url.ToString
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim Browser As New WebBrowser
TabControl1.TabPages.Add("New Page")
Browser.Name = "Web Browser"
Browser.Dock = DockStyle.Fill
TabControl1.SelectedTab.Controls.Add(Browser)
AddHandler Browser.ProgressChanged, AddressOf Loading
AddHandler Browser.DocumentCompleted, AddressOf Done
int = int + 1
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(My.Settings.homePage)
Dim Browser1 As New WebBrowser
TabControl2.TabPages.Add("New Page")
Browser1.Name = "Web Browser 2"
Browser1.Dock = DockStyle.Fill
TabControl2.SelectedTab.Controls.Add(Browser1)
AddHandler Browser1.ProgressChanged, AddressOf Loading1
AddHandler Browser1.DocumentCompleted, AddressOf Done1
int1 = int1 + 1
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Navigate(My.Settings.homePage)
End Sub
Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim Browser As New WebBrowser
TabControl1.TabPages.Add("New Page")
TabControl1.SelectTab(int)
Browser.Name = "Web Browser"
Browser.Dock = DockStyle.Fill
TabControl1.SelectedTab.Controls.Add(Browser)
AddHandler Browser.ProgressChanged, AddressOf Loading
AddHandler Browser.DocumentCompleted, AddressOf Done
int = int + 1
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(My.Settings.homePage)
End Sub
Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
If Not TabControl1.TabPages.Count = 1 Then
TabControl1.TabPages.RemoveAt(TabControl1.SelectedIndex)
TabControl1.SelectTab(TabControl1.TabPages.Count - 1)
int = int - 1
End If
End Sub
Private Sub TextBox1_KeyDown(sender As Object, e As KeyEventArgs)
If e.KeyCode = Keys.Enter Then
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(TextBox1.Text)
End If
End Sub
Private Sub Button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).ShowPropertiesDialog()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).GoBack()
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).GoForward()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Refresh()
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Stop()
End Sub
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(My.Settings.homePage)
End Sub
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(TextBox1.Text)
End Sub
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
ToolStripStatusLabel1.Text = CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).StatusText
End Sub
Private Sub Button17_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button17.Click
Dim Browser1 As New WebBrowser
TabControl2.TabPages.Add("New Page")
TabControl2.SelectTab(int1)
Browser1.Name = "Web Browser 2"
Browser1.Dock = DockStyle.Fill
TabControl2.SelectedTab.Controls.Add(Browser1)
AddHandler Browser1.ProgressChanged, AddressOf Loading1
AddHandler Browser1.DocumentCompleted, AddressOf Done1
int1 = int1 + 1
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Navigate(My.Settings.homePage)
End Sub
Private Sub Button15_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button15.Click
If Not TabControl2.TabPages.Count = 1 Then
TabControl2.TabPages.RemoveAt(TabControl2.SelectedIndex)
TabControl2.SelectTab(TabControl2.TabPages.Count - 1)
int1 = int1 - 1
End If
End Sub
Private Sub TextBox2_KeyDown(sender As Object, e As KeyEventArgs)
If e.KeyCode = Keys.Enter Then
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Navigate(TextBox2.Text)
End If
End Sub
Private Sub Button12_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button12.Click
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).ShowPropertiesDialog()
End Sub
Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button10.Click
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).GoBack()
End Sub
Private Sub Button11_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button11.Click
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).GoForward()
End Sub
Private Sub Button13_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button13.Click
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Refresh()
End Sub
Private Sub Button14_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button14.Click
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Stop()
End Sub
Private Sub Button16_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button16.Click
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Navigate(My.Settings.homePage)
End Sub
Private Sub Button18_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button18.Click
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Navigate(TextBox2.Text)
End Sub
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
ToolStripStatusLabel2.Text = CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).StatusText
End Sub
End Class
I'm new here so I'm sorry if I missed out anything. Any help would be appreciated. Thank you.
EDIT: I tried implementing the same thing with a single pane, much like implementing a simple tabbed browser in Visual Studio 2013. Same result. Only GO button works, and enter key does not produce anything.

If e.KeyCode = Keys.Enter Then
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(TextBox1.Text)
End If
You only calling navigate in TabControl1 (or 2). You need to call all from each of the TextBoxX_KeyDown Handlers.
If e.KeyCode = Keys.Enter Then
CType(TabControl1.SelectedTab.Controls.Item(0), WebBrowser).Navigate(TextBox1.Text)
CType(TabControl2.SelectedTab.Controls.Item(0), WebBrowser).Navigate(TextBox2.Text)
End If

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