Re: Why I can not get the image file.

Hi,

I download LEADTOOLS Raster Imaging Pro for .Net EVAL 14.5 from your web site and try to use it. But I encounter a problem. I can not generate the image file. Can you help me? the following code is:

 string buffer;
            bool twainAvailable = TwainSession.IsAvailable(this);
            if (!twainAvailable)
            {
                MessageBox.Show("Scaner is not available.");
                return;
            }

            TwainSession twainSession = new TwainSession();
            try
            {              
                twainSession.Startup(this, "manufacturer", "productFamily", "version", "application");

                TwainSourceInformation[] srcInfo = twainSession.SourceInformation;

                for (int i = 0; i < srcInfo.Length; i++)
                {
                    buffer = String.Format("Source Name = {0}\nProduct Family Name = {1}\nManufacturer Name = {2}\n",
                       srcInfo[i].Name, srcInfo[i].ProductFamily, srcInfo[i].Manufacturer);

                    if (srcInfo[i].Name.ToLower().IndexOf("fujitsu") == -1)
                    {
                        continue;
                    }
                    twainSession.SetAcquireSourceName(srcInfo[i].Name);
                    TwainTransferMechanism transferMode = TwainTransferMechanism.File;
                    RasterImageFormat format = RasterImageFormat.Bmp;
                    string baseFileName = @"c\test.jpg";
                    bool multiPage = false;

                    twainSession.FastTransferMechanism = transferMode;
                    twainSession.FastImageFormat = format;
                    twainSession.FastBitsPerPixel = 1;
                    twainSession.FastBufferSize = 0;
                    twainSession.FastUsePreferredBufferSize = true;
                    twainSession.EnableAcquireMultiPageEvent = false;
                    twainSession.AcquireFast(baseFileName, TwainFastUserInterfaceFlags.None, multiPage);
       
                    MessageBox.Show("Process Completed");
                    break;

                }

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            finally
            {
                twainSession.Shutdown();
            }

If you run the C# Twain Capabilities and Fast Twain Demo that is shipped with the toolkit, does it work?

Please note that although Fast Twain features work
in the evaluation edition, if you decide to purchase the toolkit they will only
work if you buy the Document Imaging toolkit since they are not part of the Raster Imaging Pro toolkit.