URLDownloadToFile(IntPtr.Zero, SourcePath , LocalPath ,0,(IBindStatusCallback)this);

        /// The URLMON library contains this function, URLDownloadToFile, which is a way

        public static extern void URLDownloadToFile(

                    URLDownloadToFile(IntPtr.Zero, SourcePath , LocalPath ,0,(IBindStatusCallback)this);//use 0x10 for new download

/// The URLMON library contains this function, URLDownloadToFile, which is a way

static extern Int32 URLDownloadToFile (

Declare Function URLDownloadToFile  Lib "urlmon.dll" (TODO) As TODO

    int response = URLDownloadToFile( null, urlStr, fileToStoreStr, 0, IntPtr.Zero );

    [DllImport("URLMON.DLL", EntryPoint = "URLDownloadToFileW", SetLastError = true,

    public static extern int URLDownloadToFile(int pCaller, string srcURL,

        URLDownloadToFile(0, sDownloadURL, sDownloadFile, 0, 0);

/// The URLMON library contains this function, URLDownloadToFile, which is a way

static extern Int32 URLDownloadToFile(

private static extern void URLDownloadToFile(

Public Declare Function URLDownloadToFileA Lib "urlmon" (ByVal pCaller As Long, ByVal szURL As String, ByVal szFileName As String, ByVal dwReserved As Long, ByVal lpfnCB As Long) As Long

Private Shared Function URLDownloadToFile(<MarshalAs(UnmanagedType.IUnknown)> pCaller As Object, <MarshalAs(UnmanagedType.LPWStr)> szURL As String, <MarshalAs(UnmanagedType.LPWStr)> szFileName As String, dwReserved As Int32, lpfnCB As IntPtr) As Int32

http://www.pinvoke.net/default.aspx/urlmon/URLDownloadToFile%20.html

    int response = URLDownloadToFile( null, urlStr, fileToStoreStr, 0, IntPtr.Zero );

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