login code for dropbox not working. desperate for help

[hitme]

Please help me with the following code. After opening the link it does not like to enter in username and password. It is essential that they access through webbrowser form:

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

        Dim Web As New DropBoxWebBrowse
        Dim user = TextBox1.Text
        Dim pass = TextBox2.Text

        Web.Show()
        Web.WebBrowser1.Navigate("https://www.dropbox.com/login?lhs_type=anywhere")

        With Web.WebBrowser1
            .Document.GetElementById("login_email").SetAttribute("Value", user)
            .Document.GetElementById("login_password").SetAttribute("Init val", pass)
        End With

    End Sub

[techgnome]

Sigh... we see this so many times...
the Navigate call is asynchronous... meaning that it isn't going to wait for the page to be loaded before continuing on. So what's happening is that it's running the next line before the page is loaded...

what you need to do is move the last 4 lines to the DocumentLoaded event... that way when the Document is loaded, then the code will continue.

-tg

[Static]

rookie mistake


my question is, with dropbox tools like direct access from your desktop, why do they need to login through your app?

[hitme]

Thanks for the suggestion. Soon after posting this question I continued to search for answers. I already tried to move to the documentloaded sub but it still fails to work. It is causing me to sigh too...

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

        Dim Web As New DropBoxWebBrowse

        Web.Show()
        Web.WebBrowser1.Navigate("https://www.dropbox.com/login?lhs_type=anywhere")
    End Sub

 Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted

              'Part 2: Locate the Username TextBox and automatically input your username  
            '<input id="login_email" type="email" name="login_email" tabindex="1" />  
            Dim theElementCollection As HtmlElementCollection = WebBrowser1.Document.GetElementsByTagName("login_email")
            For Each curElement As HtmlElement In theElementCollection
                Dim controlName As String = curElement.GetAttribute("input id").ToString
                If controlName = "login_email" Then
                    curElement.SetAttribute("Value", DropBoxRegister.TextBox1.Text)
                End If
            Next

            'Part 3: Locate the Password TextBox and automatically input your password  
            '<input type="password" id="login_password" name="login_password" tabindex="2" /> 
            theElementCollection = WebBrowser1.Document.GetElementsByTagName("login_password")
            For Each curElement As HtmlElement In theElementCollection
                Dim controlName As String = curElement.GetAttribute("id").ToString
                If controlName = "login_password" Then
                    curElement.SetAttribute("Value", DropBoxRegister.TextBox2.Text)
                End If
            Next

            'Part 4: Locate the "Sign In" Button and automatically click it  
            '</div><input name="login_submit_dummy" value="Sign in" class="freshbutton-blue" type="submit" id="login_submit" tabindex="4" />  
            theElementCollection = WebBrowser1.Document.GetElementsByTagName("login_submit_dummy")
            For Each curElement As HtmlElement In theElementCollection
                If curElement.GetAttribute("value").Equals("Sign in") Then
                    curElement.InvokeMember("click")
                    'Javascript has a click method for we need to invoke on the current submit button element.  
                End If
            Next
    End Sub

[hitme]

rookie mistake


my question is, with dropbox tools like direct access from your desktop, why do they need to login through your app?

This is for initial login and their acceptance of connecting our application to their dropbox account. After that i want it to store their dropbox account details and perform backups of the database without them having to enter their details again