守着一只汪
ImageFile imageFile = null;CommonDialogClass cdc = new WIA.CommonDialogClass();
try{ imageFile = cdc.ShowAcquireImage(WIA.WiaDeviceType.ScannerDeviceType, WIA.WiaImageIntent.TextIntent, WIA.WiaImageBias.MaximizeQuality, "{00000000-0000-0000-0000-000000000000}", true, true, false);}catch (System.Runtime.InteropServices.COMException){ imageFile = null;}