[RESOLVED] problems with navigating webbrowser on form1 from form2

[iamcpc]

I have webbrowser1 on form1.

I would like for a user to be able to click a button on form2 and have that button do two things

1. navigate form1.webbrowser1 from one document to another (for the sake of this lets just say www.google.com to www.yahoo.com)

2. after the webbrowser has navigated continue with the rest of the code

The problem is that the webbrowser will only navigate after the form2 button click is done or after i make a msgbox popup.

Why would the webrowser only navigate after a msgbox pops up?


an example of my form2.buttonclick event






form1.webbrowser1.navigate("www.yahoo.com")

debug.print form1.webbrowser1.url
'shows www.google.com

'i tried making a do while webbrowser1.readystate loop here but it goes forever because webbrowser1 never navigates
'i also tried using the form1.webrowser1 on navigate completed event but again it fails because webrowser1 never navigates.


msgbox ("this msgbox makes the webbrowser navigate")

debug.print form1.webbrowser1.url
'shows www.yahoo.com

[dunfiddlin]

It's not that the browser doesn't navigate. It's that your blocking the thread with your wait loop so it never shows the page. The msgbox doesn't have anything to do with anything. It just frees the thread to complete its task. If you're going to use a readystate loop at least allow the program to carry out its tasks ...

Form1.WebBrowser1.Navigate("www.yahoo.com")
While Form1.WebBrowser1.ReadyState <> WebBrowserReadyState.Complete
Me.Text = "Waiting"
Application.DoEvents()
End While

[dday9]

In your form1, you'll have 3 events. The first is a button's click, the second is the webbrowser's document completed, and the third is the form load. In the button, you'll show form2. In the document completed you perform any code you want to perform after you visit a website. In the load, you simply navigate to yahoo.

Option Strict On
Option Explicit On
Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Form2.Show()
    End Sub

    Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
        'Rest of the code once it's been navigated

    End Sub

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        WebBrowser1.Navigate("www.yahoo.com")
    End Sub
End Class

In form2, you'll generate the button's click event. In that event you'll navigate form1's webbrowser:

Option Strict On
Option Explicit On
Public Class Form2

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Form1.WebBrowser1.Navigate("www.google.com")
    End Sub
End Class

[iamcpc]

In your form1, you'll have 3 events. The first is a button's click, the second is the webbrowser's document completed, and the third is the form load. In the button, you'll show form2. In the document completed you perform any code you want to perform after you visit a website. In the load, you simply navigate to yahoo.

Option Strict On
Option Explicit On
Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Form2.Show()
    End Sub

    Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
        'Rest of the code once it's been navigated

    End Sub

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        WebBrowser1.Navigate("www.yahoo.com")
    End Sub
End Class

In form2, you'll generate the button's click event. In that event you'll navigate form1's webbrowser:

Option Strict On
Option Explicit On
Public Class Form2

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Form1.WebBrowser1.Navigate("www.google.com")
    End Sub
End Class

This is not a solution. Let's just say that form2 will navigate form1.webbrowser1 and then, after that navigation is completed, put form2 in the yahoo search bar. I can't put the form2 into the yahoo search bar on every webbrowser1 navigate event because webbrowser1 will navigate away from yahoo and it starts on google and there will be an error when i try to put text into the yahoo search box and i'm on google.

[iamcpc]

It's not that the browser doesn't navigate. It's that your blocking the thread with your wait loop so it never shows the page. The msgbox doesn't have anything to do with anything. It just frees the thread to complete its task. If you're going to use a readystate loop at least allow the program to carry out its tasks ...

Form1.WebBrowser1.Navigate("www.yahoo.com")
While Form1.WebBrowser1.ReadyState <> WebBrowserReadyState.Complete
Me.Text = "Waiting"
Application.DoEvents()
End While

I can't do application.doevents() because application is ambiguous it's been imported from excel, outlook and windows forms.

[dday9]

And I suppose mine got overlooked ;]

[dunfiddlin]

Ok. No matter!

[iamcpc]

And I suppose mine got overlooked ;]

No it didn't get overlooked the problem is that i wanted form4 to be the only one to run the code after it navigated form1.webrowser1.

form4 navigates form1 to google and fills out the google search box or form4 navigates form1 to yahoo and fills out the yahoo search box. If i put the filling out of the searchbox on form1.webbrowser1.navigatecomplete event then if the user navigates to www.cnn.com the form will try to fill out a yahoo or google search box where there is none.



I found a workaround which involved making a wait function in a module and calling the wait function. the wait function was a combination of sleeping the thread and application.doevents() this solved all my problems. How do I mark this thread as resolved?

[dunfiddlin]

How do I mark this thread as resolved?

Thread Tools up the top of the page.

[iamcpc]

Is there any way that I can mark this thread as unsolved because application.doevents() wound up causing a lot of headache.