کار با اسکنر c# - نسخه قابل چاپ

کد:
public class ImageAcquisition

    {

        private WIALib.WiaClass WiaClass;

        private WIALib.ItemClass ItemClass;

        private WIALib.CollectionClass CollectionClassDevices;

        private WIALib.CollectionClass CollectionClassPics;

        



        #region SelectDevice

        public bool SelectDevice()

        {

            try

            {

                object selectUsingUI;



                WiaClass = new WIALib.WiaClass();

                CollectionClassDevices = (WIALib.CollectionClass)WiaClass.Devices;



                if (WiaClass.Devices.Count == 0)

                    return false;



                selectUsingUI = System.Reflection.Missing.Value;



                ItemClass = (WIALib.ItemClass)WiaClass.Create(ref selectUsingUI);



                if (ItemClass == null)

                    return false;



                return true;

            }

            catch (System.Exception exp)

            {

                return false;

            }

        }

        #endregion        



        #region Capture

        public System.Drawing.Image Capture()

        {

            try

            {

                CollectionClassPics = ItemClass.GetItemsFromUI(WIALib.WiaFlag.SingleImage, WIALib.WiaIntent.ImageTypeColor) as WIALib.CollectionClass;

                if (CollectionClassPics == null)

                    return null;



                ItemClass = (WIALib.ItemClass)System.Runtime.InteropServices.Marshal.CreateWrapperOfType(CollectionClassPics[0], typeof(WIALib.ItemClass));

                string imageFileName = System.IO.Path.GetTempFileName();

                ItemClass.Transfer(imageFileName, false);

                System.Drawing.Image Image = System.Drawing.Image.FromFile(imageFileName);



                System.Runtime.InteropServices.Marshal.ReleaseComObject(CollectionClassPics[0]);

                return Image;

            }

            catch (System.Exception exp)

            {

                return null;

            }

        }

        #endregion

    }