Controlling IE from VB.Net

[heabrams]

I want to give my user the ability to provide the url of a web page. I load ie using the following code:

 

Dim IE As New SHDocVw.InternetExplorer

IE.Visible = True

IE.Navigate("www.msn.com")

 

Now, I want my program to wait until ie is closed, and then I want to capture the url at the time of closing. So, how do I wait for ie to complete and is there an ie event such as beforeclosing that will allow me to get the location property?

 

Please note that I am NOT using the web browser control but rather launching a copy of ie (to make the user's favorites and web history available).

 

Thanks!

[heabrams]

Well, here is the answer

 

1. Dim a variable with form-level scope to hold the ie object when needed along with a form-level variable to hold the url:

 

Dim IE As SHDocVw.InternetExplorer ' Do not use "new" nere; instantiate only as needed

Dim URL As String

 

2. Create a handler for the OnQuit event that takes no arguments:

 

Sub HandleIEQuit()

URL = IE.LocationURL

Dim x As Integer = 1

End Sub

 

3. Assign a limited-scope handler delegate in the subroutine or procedure creating the browser call:

 

Private Sub AddURL_ItemClick(ByVal sender As System.Object, ByVal e As DevExpress.XtraBars.ItemClickEventArgs) Handles AddURL.ItemClick

URL = ""

IE = New SHDocVw.InternetExplorer

AddHandler IE.OnQuit, AddressOf HandleIEQuit

IE.Visible = True

IE.Navigate("www.msn.com")

End Sub

 

4. The delay cab be handled in a variety of ways, but after second thought I decided to eliminate the possibility of creating an unexpected "hang" for my users if they forget to close the browser window.

Edited August 2, 2010 by heabrams