Mark a file as scanned using c#

OleDocumentProperties oOleDocumentProperties = new OleDocumentProperties();
           oOleDocumentProperties.Open(@"C:\Users\test\yrdy\mbam.exe", false, DSOFile.dsoFileOpenOptions.dsoOptionDefault);
           DSOFile.CustomProperty test;
           DSOFile.SummaryProperties summaryProperties;
           oOleDocumentProperties.SummaryProperties.Title = "diggisx";
           object obj = "test";
           //oOleDocumentProperties.CustomProperties.Add("Digvijay", ref obj);
           //oOleDocumentProperties.Save();
           //oOleDocumentProperties.Close(true);
           summaryProperties = oOleDocumentProperties.SummaryProperties;
           Console.WriteLine(summaryProperties.Title);
           //foreach (DSOFile.CustomProperty property in oOleDocumentProperties.CustomProperties)
           //{

           //    Console.WriteLine(string.Format("Value for key \"{0}\": {1} ", property.Name, property.get_Value()));

           //}
           Console.ReadLine();