DWObject.SelectSource();
/* You should customize the settings after opening a source */
DWObject.OpenSource();  
/* Hide the User Interface of the scanner */                
DWObject.IfShowUI = false;     
/* Use the document feeder to scan in batches */      
DWObject.IfFeederEnabled = true;  
/* Scan in Simplex mode (only 1 side of the page) */     
DWObject.IfDuplexEnabled = false;    
/* Scan pages in GRAY */  
DWObject.PixelType = EnumDWT_PixelType.TWPT_GRAY; 
/* Scan pages in 200 DPI */
DWObject.Resolution = 200;   
/* Start scanning */            
DWObject.AcquireImage();