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Thread: WebBrowser control is not displaying local HTML files

  1. #1

    Thread Starter
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    Question WebBrowser control is not displaying local HTML files

    Hi guys

    I wasted a week so far reading and trying all the solutions I can find on the net only to find that they do no work.

    I have a listbox that shows the filename of all files in a "show" folder. Clicking on a filename should display the HTML file in the webbrowser control.

    Here is the code I'm using at the moment and the actual file location is "D:\The Penfound Project\family\show\1.html"

    Code:
       Private Sub ListBox1_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ListBox1.SelectedIndexChanged
            Dim SF, URLString As String
            SF = ListBox1.SelectedItem.ToString
            SF = myPath & SF
            WebBrowser1.AllowNavigation = True
            URLString = "file:///" & SF
            URLString = URLString.Replace("\", "/") 'this does not work
            'URLString = "https://penfound.org" 'this works
            Me.WebBrowser1.Navigate(URLString)
            WebBrowser1.Update()
        End Sub
    When I click on a filename the program locks up wit ha blank browser area.
    Last edited by dday9; Mar 5th, 2018 at 04:18 PM.

  2. #2
    PowerPoster techgnome's Avatar
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    Re: WebBrowser control is not displaying local HTML files

    It's been a while, but I believe it should be file:// not file:///

    And those should be the only forward slashes, the rest in the path should remain as back slashes.

    -tg
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  3. #3
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    Re: WebBrowser control is not displaying local HTML files

    Quote Originally Posted by techgnome View Post
    It's been a while, but I believe it should be file:// not file:///

    And those should be the only forward slashes, the rest in the path should remain as back slashes.

    -tg
    At least using Chrome, opening a local HTML results in file:///C:/Users/FMS-VB/Documents/test.html in its address bar.

    Quote Originally Posted by Penfound View Post
    URLString = URLString.Replace("\", "/") 'this does not work
    What is the value of URLString after this line?

  4. #4

    Thread Starter
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    Re: WebBrowser control is not displaying local HTML files

    Thanks for your input guys - unfortunately neither works.
    Maybe MS will make one that does work in the next edition of VS

  5. #5
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    Re: WebBrowser control is not displaying local HTML files

    Quote Originally Posted by Penfound View Post
    Thanks for your input guys - unfortunately neither works.
    Maybe MS will make one that does work in the next edition of VS
    Define doesn't work. What error are you getting? Perhaps you should trap whatever exception you must be getting to lock up.

    Using VS2013 on WIn 7, I can do
    Code:
            Try
                Me.WebBrowser1.Navigate("file:///C:/Users/FMS-VB/Documents/test.html")
            Catch ex As Exception
                MessageBox.Show(ex.ToString)
            End Try
    and it shows my test page. I'm thinking your URLString isn't exactly what you think it is or there is some kind of permissions issue or maybe something wrong with the HTML in the file.

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