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Dynamic Controls - referencingI am creating my own webbrowser to learn VB .Net. I am stuck on an issue with regards to dynamically-created controls, in this case tabs on a tabcontrol and webbrowsers created within each new tab. Using AddHandler in a class, I can get the delegate Sub to display the name of the webbrowser that has been clicked (by using msgbox(sender.tag), where I set the .tag value when creating the control). What I need to be able to do is use Back, Forward, Stop, Print buttons etc on ANY webbrowser currently with focus. In a nutshell at runtime the user might have 6 tabs in a tabcontrol contain a webbrowser each. How do I pass the value of the currently-selected webbrowser, dynamically created, to these buttons from the class where I created the tabs/webbrowsers? I guess to do something like (quazi code) webbrowser(x).goback is what I seek....any ideas? Completely stumped O. O
Having the same problem myself - if anyone answers this, it will be a miracle? Gray Show quoteHide quote "msdev" <msdev88os@nospam.nospam> wrote in message news:ONo0hG9MGHA.3856@TK2MSFTNGP12.phx.gbl... > Hello, > > I am creating my own webbrowser to learn VB .Net. I am stuck on an issue > with regards to dynamically-created controls, in this case tabs on a > tabcontrol and webbrowsers created within each new tab. > > Using AddHandler in a class, I can get the delegate Sub to display the > name of the webbrowser that has been clicked (by using msgbox(sender.tag), > where I set the .tag value when creating the control). > What I need to be able to do is use Back, Forward, Stop, Print buttons etc > on ANY webbrowser currently with focus. > > In a nutshell at runtime the user might have 6 tabs in a tabcontrol > contain a webbrowser each. How do I pass the value of the > currently-selected webbrowser, dynamically created, to these buttons from > the class where I created the tabs/webbrowsers? > > I guess to do something like (quazi code) > > webbrowser(x).goback > > is what I seek....any ideas? Completely stumped > > O. > > jvb
yep started there first of all. Problem is, it gives me the tabcontrol tab that has been selected, but not the webbrowser contained within that tab. I have been playing with addhandler, as I am sure it had something to do with it, but to no avail. What I need to do is to send the value of the currently-selected browser to some "central settings" point, so that one set of buttons can control any number of dynamically-created webbrowsers. The stumbling block for me is trying to send the "currently selected" webbrowser to the goback, goforward, print, stop buttons, so they only apply to that webbrowser in focus. If the user selects another tab/webbrowser, the buttons will switch to work with that focussed browser and so on. I am probably not explaining it too well! Sorry Did this help? Show quoteHide quote "jvb" <gome***@gmail.com> wrote in message news:1140207183.487317.120240@g14g2000cwa.googlegroups.com... > Have you tried getting the selected tab page from the tab control? > If you know tab page selected, can you make the assumption that the
browser on that page is active? So in your code, in the button's click event, you could try... CType(TabControl1.SelectedTab.Controls.Item(TabControl1.SelectedTab.Controls.GetChildIndex(<Your Dynamically Created Web Control>)), AxSHDocVw.AxWebBrowser).GoBack() AxSHDocVw.AxWebBrowser is the browser control i use, not sure if you are using the same. You can always track the references yourself. i.e. when you dynamically
create the tab, put in a hashtable the TabIdentifier as the key and a reference to the webbrowser control contained on that tab. Then as you change tabs you can set the object reference of web browser (the reference that is wired to the events) to the one from the hashtable. something like this (fake code) dim myBrowserControl as webbrowser form_load addhandler browser.next, someproc init_tab create new tab tab myhash(tabindex) = webrowsercontrol on this tab sub TabChange myBrowserControl = myHash(tabIndex) end Show quoteHide quote "msdev" <msdev88os@nospam.nospam> wrote in message news:ONo0hG9MGHA.3856@TK2MSFTNGP12.phx.gbl... > Hello, > > I am creating my own webbrowser to learn VB .Net. I am stuck on an issue > with regards to dynamically-created controls, in this case tabs on a > tabcontrol and webbrowsers created within each new tab. > > Using AddHandler in a class, I can get the delegate Sub to display the > name of the webbrowser that has been clicked (by using msgbox(sender.tag), > where I set the .tag value when creating the control). > What I need to be able to do is use Back, Forward, Stop, Print buttons etc > on ANY webbrowser currently with focus. > > In a nutshell at runtime the user might have 6 tabs in a tabcontrol > contain a webbrowser each. How do I pass the value of the > currently-selected webbrowser, dynamically created, to these buttons from > the class where I created the tabs/webbrowsers? > > I guess to do something like (quazi code) > > webbrowser(x).goback > > is what I seek....any ideas? Completely stumped > > O. > > Jeff,
I think you might be on to something here. Is there any chance you can expand on your code a bit? I am new to dynamic controls in vb.net 2005. If I replace webbrowser1.goback with mybrowsercontrol.goback, will this work too? G Jeff Jarrell wrote: Show quoteHide quote > You can always track the references yourself. i.e. when you dynamically > create the tab, put in a hashtable the TabIdentifier as the key and a > reference to the webbrowser control contained on that tab. Then as you > change tabs you can set the object reference of web browser (the reference > that is wired to the events) to the one from the hashtable. > > something like this (fake code) > > dim myBrowserControl as webbrowser > > form_load > addhandler browser.next, someproc > > init_tab > create new tab tab > myhash(tabindex) = webrowsercontrol on this tab > > sub TabChange > myBrowserControl = myHash(tabIndex) > end > > > "msdev" <msdev88os@nospam.nospam> wrote in message > news:ONo0hG9MGHA.3856@TK2MSFTNGP12.phx.gbl... > > Hello, > > > > I am creating my own webbrowser to learn VB .Net. I am stuck on an issue > > with regards to dynamically-created controls, in this case tabs on a > > tabcontrol and webbrowsers created within each new tab. > > > > Using AddHandler in a class, I can get the delegate Sub to display the > > name of the webbrowser that has been clicked (by using msgbox(sender.tag), > > where I set the .tag value when creating the control). > > What I need to be able to do is use Back, Forward, Stop, Print buttons etc > > on ANY webbrowser currently with focus. > > > > In a nutshell at runtime the user might have 6 tabs in a tabcontrol > > contain a webbrowser each. How do I pass the value of the > > currently-selected webbrowser, dynamically created, to these buttons from > > the class where I created the tabs/webbrowsers? > > > > I guess to do something like (quazi code) > > > > webbrowser(x).goback > > > > is what I seek....any ideas? Completely stumped > > > > O. > > > > It is going to look a little like this. I'd be careful to pick a good key
for the dictionary. In this case I am using the count of tab pages as part of the key but that won't work if you ultimately take tab pages out. You might also want to look at the "InitializeComponent" on similar components created at design time and set those same properties on the creation of the dynamic controls. Dim _dctWebBrowserReferences As New Hashtable Friend WithEvents _webbrowser As WebBrowser Private Sub newPage() Dim myNewTabPage As New TabPage myNewTabPage.Name = "Page" & Me.TabControl1.TabCount + 1 myNewTabPage.Text = "Page" & Me.TabControl1.TabCount + 1 Dim myNewBrowser As New WebBrowser myNewBrowser.Name = "WebBrowser" & Me.TabControl1.TabCount + 1 myNewBrowser.Dock = DockStyle.Fill Dim key As String key = myNewTabPage.Text _dctWebBrowserReferences(key) = myNewBrowser myNewTabPage.Controls.Add(myNewBrowser) Me.TabControl1.Controls.Add(myNewTabPage) End Sub Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click newPage() End Sub Private Sub TabControl1_TabIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TabControl1.TabIndexChanged Dim myTabPage As TabPage myTabPage = TabControl1.SelectedTab Dim key As String key = myTabPage.Text Me._webbrowser = CType(Me._dctWebBrowserReferences(key), WebBrowser) End Sub Show quoteHide quote "gray" <key***@freeuk.com> wrote in message news:1140343070.424310.140270@o13g2000cwo.googlegroups.com... > Jeff, > > I think you might be on to something here. Is there any chance you can > expand on your code a bit? I am new to dynamic controls in vb.net 2005. > > If I replace webbrowser1.goback with mybrowsercontrol.goback, will this > work too? > > G > > > Jeff Jarrell wrote: >> You can always track the references yourself. i.e. when you dynamically >> create the tab, put in a hashtable the TabIdentifier as the key and a >> reference to the webbrowser control contained on that tab. Then as you >> change tabs you can set the object reference of web browser (the >> reference >> that is wired to the events) to the one from the hashtable. >> >> something like this (fake code) >> >> dim myBrowserControl as webbrowser >> >> form_load >> addhandler browser.next, someproc >> >> init_tab >> create new tab tab >> myhash(tabindex) = webrowsercontrol on this tab >> >> sub TabChange >> myBrowserControl = myHash(tabIndex) >> end >> >> >> "msdev" <msdev88os@nospam.nospam> wrote in message >> news:ONo0hG9MGHA.3856@TK2MSFTNGP12.phx.gbl... >> > Hello, >> > >> > I am creating my own webbrowser to learn VB .Net. I am stuck on an >> > issue >> > with regards to dynamically-created controls, in this case tabs on a >> > tabcontrol and webbrowsers created within each new tab. >> > >> > Using AddHandler in a class, I can get the delegate Sub to display the >> > name of the webbrowser that has been clicked (by using >> > msgbox(sender.tag), >> > where I set the .tag value when creating the control). >> > What I need to be able to do is use Back, Forward, Stop, Print buttons >> > etc >> > on ANY webbrowser currently with focus. >> > >> > In a nutshell at runtime the user might have 6 tabs in a tabcontrol >> > contain a webbrowser each. How do I pass the value of the >> > currently-selected webbrowser, dynamically created, to these buttons >> > from >> > the class where I created the tabs/webbrowsers? >> > >> > I guess to do something like (quazi code) >> > >> > webbrowser(x).goback >> > >> > is what I seek....any ideas? Completely stumped >> > >> > O. >> > >> > > 
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