/// <summary>
 /// Provides data to the client as it becomes available during asynchronous bind operations.
 /// </summary>
 void IBindStatusCallback.OnDataAvailable(BSCF grfBSCF, uint dwSize, ref FORMATETC pformatetc, ref STGMEDIUM pstgmed)
 {
     // never called by URLDownloadToFile
     LOG_UN("IBindStatusCallback", "OnDataAvailable");
 }
 /// <summary>
 /// Provides data to the client as it becomes available during asynchronous bind operations.
 /// </summary>
 void IBindStatusCallback.OnDataAvailable(BSCF grfBSCF, uint dwSize, ref FORMATETC pformatetc, ref STGMEDIUM pstgmed)
 {
     // never called by URLDownloadToFile
     LOG_UN("IBindStatusCallback", "OnDataAvailable");
 }