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Using MSHTML to use / crawl a site RRS feed

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    Hello...

    I need help with a problem i have.. im using MSHTML on my website to access a page on a site that requires login.. when i call a page on the site, im redirected to the login page.. what i need to do is get this login page , fill the logins, and get in to get to the page i need... i found the folllowing piece of code on the internet and it works fine when putting text in textbox, but it does not fire the click event of the button... i dunno y... i even tried IHTMLElementClick() but in vain :(

    can anyone pls help with this..?? 

    P.S : im not using the webbrowser control becuase this is a web application (website project to be precise) and this has to be invisible to the user.. the user will enter a url and press go.. 




      public enum  HRESULT :uint
    {
        S_OK = 0,
        S_FALSE = 1,
        E_NOTIMPL = 0x80004001,
        E_INVALIDARG = 0x80070057,
        E_NOINTERFACE = 0x80004002,
        E_FAIL = 0x80004005,
        E_UNEXPECTED = 0x8000ffff
    }

    [ComVisible(true), ComImport(), Guid("7FD52380-4E07-101B-AE2D-08002B2EC713"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IPersistStreamInit : IPersist
    {
        new void GetClassID(ref Guid pClassID);
        [PreserveSig()]
        int IsDirty();
        [PreserveSig()]
        HRESULT Load(UCOMIStream pstm);
        [PreserveSig()]
        HRESULT Save(UCOMIStream pstm, [MarshalAs(UnmanagedType.Bool)]
bool fClearDirty);
        [PreserveSig()]
        HRESULT GetSizeMax([InAttribute(), Out(), MarshalAs(UnmanagedType.U8)]
ref long pcbSize);
        [PreserveSig()]
        HRESULT InitNew();
    }

    [ComVisible(true), ComImport(), Guid("0000010c-0000-0000-C000-000000000046"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IPersist
    {
        void GetClassID(ref Guid pClassID);
    }


    protected void Page_Load(object sender, EventArgs e)
    {
        string url = "http://images.google.com/";

        mshtml.HTMLDocument objMSHTML = new mshtml.HTMLDocument();
        mshtml.IHTMLDocument2 objMSHTML2;
        mshtml.IHTMLDocument3 objMSHTML3;
        int x = 10;
        //a dummy variable

        IPersistStreamInit objIPS;
        //here is the whole trick
        objIPS = (IPersistStreamInit)objMSHTML;
        objIPS.InitNew();
        //you have to do it, if not you will always have readyState as "loading"
        objMSHTML2 = objMSHTML.createDocumentFromUrl(url, null);
        while (!(objMSHTML2.readyState == "complete"))
        {
            x = x + 1;
        }
        objMSHTML3 = (mshtml.IHTMLDocument3)objMSHTML2;

        IHTMLElementCollection d = objMSHTML3.getElementsByName("q");
        IHTMLElementCollection de = objMSHTML3.getElementsByName("btnG");
        HTMLInputElementClass cn = (HTMLInputElementClass)d.item("q", 0);
        cn.value = "biso";
        HTMLInputElementClass bt =  (HTMLInputElementClass)de.item("btnG", 0);

        bt.click();
        // this does not fire
       
        string s = objMSHTML3. documentElement.innerHTML;

       // if u check (string s) in the html visualizer, ull get the google page with biso written in the text box
        
        


    }

     Much appreciated..

    Cheers,
    • Moved by Harry Zhu Wednesday, March 3, 2010 5:10 AM (From:Visual C# General)
    Saturday, February 27, 2010 7:23 PM

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    I used to have an app that needed to do something similar. here is the code that I used

               //you need to setup a class level bool value so that you don't fill in any fields until the page has finished loading.   
            public bool bBusy = false;   
  
            //then handle the document completed event to release code and allow it to continue   
         private void wb1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)   
        {   
            bBusy = false;   
        }   
  
  
  
            //the following code would be placed in the method that performs the action  
            bBusy = true;  
            wb1.Navigate(@"http://www.somesite.com/login.aspx");   
             
            while (bBusy == true)   
            {   
                Application.DoEvents();   
            }   
            foreach (HtmlElement htmle in wb1.Document.GetElementsByTagName("Input"))   
            {   
                  
                switch (htmle.Name)   
                {   
                    case "txtId": htmle.InnerText = "UserName"; break;   
                    case "txtPassword": htmle.InnerText = "Password"; break;   
                    case "btnLogin": bBusy = true;htmle.InvokeMember("click"); break;   
                }   
            }   
               
            while (bBusy == true)   
            {   
                Application.DoEvents();   
            }
    Saturday, February 27, 2010 11:12 PM
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    this is a windows app and ur using the webbrowser control, right???

    if so, this wont work cuz im using asp.ner and i cant/(and dont need) to use the webbrowser control...  
    Cheers,
    Sunday, February 28, 2010 6:03 AM
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    Yeah, this is from a forms app with a webbrowser control. sorry. not sure if this is possible. you might have better luck on an asp.net forum
    Sunday, February 28, 2010 6:19 AM
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    Hi,

    For the     questions relating to asp.net ,please post to: http://forums.asp.net/.

    Thanks,
    Harry

    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
    Welcome to the All-In-One Code Framework! If you have any feedback, please tell us.
    Wednesday, March 3, 2010 5:10 AM