Dim guid As Guid = ExplorerGUIDs.IID_IWebBrowserApp

        Explorer = DirectCast(Marshal.CreateWrapperOfType(TryCast(w, IWebBrowser), GetType(WebBrowserClass)), WebBrowserClass)

    Public Shared ReadOnly IID_IWebBrowserApp As New Guid("{0002DF05-0000-0000-C000-000000000046}")

        Dim guid As Guid = ExplorerGUIDs.IID_IWebBrowserApp

        Explorer = DirectCast(Marshal.CreateWrapperOfType(TryCast(w, IWebBrowser), GetType(WebBrowserClass)), WebBrowserClass)

    Public Shared ReadOnly IID_IWebBrowserApp As New Guid("{0002DF05-0000-0000-C000-000000000046}")

      SHDocVw.IWebBrowser webBrowser = null;

    Riid = typeof(SHDocVw.IWebBrowser).GUID;

    webBrowser = webBrowserObj as SHDocVw.IWebBrowser;

       SHDocVw.IWebBrowser2 axWebBrowser = null;

        axWebBrowser = (SHDocVw.IWebBrowser2)webBrowser.ActiveXInstance;

    public interface IWebBrowser2 : IWebBrowserApp

    public interface IWebBrowserApp : IWebBrowser

    Public Interface IWebBrowser2

In C# definition IWebBrowser2 inherits from IWebBrowserApp and it inherits from IWebBrowser. This definition was generated by Interop when referencing SHDocVw. Original one-interface definition of IWebBrowser2 had issues with IE9 in some cases but this new definition works fine.

    public interface IWebBrowser2 : IWebBrowserApp

    public interface IWebBrowserApp : IWebBrowser

    public interface IWebBrowser

    Public Interface IWebBrowser2

In C# definition IWebBrowser2 inherits from IWebBrowserApp and it inherits from IWebBrowser. This definition was generated by Interop when referencing SHDocVw. Original one-interface definition of IWebBrowser2 had issues with IE9 in some cases but this new definition works fine.

This can be used in place of IWebBrowser2.ExecWB( Save-As, Dont-Prompt ) which will always prompt the user anyway. The function does not return until the transfer finishes or fails.

    URLDownloadToFile(IE as SHDocVw.IWebBrowser2, urlStr, fileToStoreStr, 0, IntPtr.Zero );