C# 将指纹模板保存到SQL数据库

我有U.are.U指纹4500阅读器，目前它附带的sdk将指纹模板保存为文件而不是数据库。我想把它保存到一个数据库中，也能够从数据库中验证手指。这是下面的代码

namespace Enrollment
{
    /* NOTE: This form is a base for the EnrollmentForm and the VerificationForm,
        All changes in the CaptureForm will be reflected in all its derived forms.
    */
    public partial class CaptureForm : Form, DPFP.Capture.EventHandler
    {
        public CaptureForm()
        {
            InitializeComponent();
        }

        protected virtual void Init()
        {
            try
            {
                Capturer = new DPFP.Capture.Capture();              // Create a capture operation.

                if ( null != Capturer )
                    Capturer.EventHandler = this;                   // Subscribe for capturing events.
                else
                    SetPrompt("Can't initiate capture operation!");
            }
            catch
            {               
                MessageBox.Show("Can't initiate capture operation!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);            
            }
        }

        protected virtual void Process(DPFP.Sample Sample)
        {
            // Draw fingerprint sample image.
            DrawPicture(ConvertSampleToBitmap(Sample));
        }

        protected void Start()
        {
            if (null != Capturer)
            {
                try
                {
                    Capturer.StartCapture();
                    SetPrompt("Using the fingerprint reader, scan your fingerprint.");
                }
                catch
                {
                    SetPrompt("Can't initiate capture!");
                }
            }
        }

        protected void Stop()
        {
            if (null != Capturer)
            {
                try
                {
                    Capturer.StopCapture();
                }
                catch
                {
                    SetPrompt("Can't terminate capture!");
                }
            }
        }

    #region Form Event Handlers:

        private void CaptureForm_Load(object sender, EventArgs e)
        {
            Init();
            Start();                                                // Start capture operation.
        }

        private void CaptureForm_FormClosed(object sender, FormClosedEventArgs e)
        {
            Stop();
        }
    #endregion

    #region EventHandler Members:

        public void OnComplete(object Capture, string ReaderSerialNumber, DPFP.Sample Sample)
        {
            MakeReport("The fingerprint sample was captured.");
            SetPrompt("Scan the same fingerprint again.");
            Process(Sample);
        }

        public void OnFingerGone(object Capture, string ReaderSerialNumber)
        {
            MakeReport("The finger was removed from the fingerprint reader.");
        }

        public void OnFingerTouch(object Capture, string ReaderSerialNumber)
        {
            MakeReport("The fingerprint reader was touched.");
        }

        public void OnReaderConnect(object Capture, string ReaderSerialNumber)
        {
            MakeReport("The fingerprint reader was connected.");
        }

        public void OnReaderDisconnect(object Capture, string ReaderSerialNumber)
        {
            MakeReport("The fingerprint reader was disconnected.");
        }

        public void OnSampleQuality(object Capture, string ReaderSerialNumber, DPFP.Capture.CaptureFeedback CaptureFeedback)
        {
            if (CaptureFeedback == DPFP.Capture.CaptureFeedback.Good)
                MakeReport("The quality of the fingerprint sample is good.");
            else
                MakeReport("The quality of the fingerprint sample is poor.");
        }
    #endregion

        protected Bitmap ConvertSampleToBitmap(DPFP.Sample Sample)
        {
            DPFP.Capture.SampleConversion Convertor = new DPFP.Capture.SampleConversion();  // Create a sample convertor.
            Bitmap bitmap = null;                                                           // TODO: the size doesn't matter
            Convertor.ConvertToPicture(Sample, ref bitmap);                                 // TODO: return bitmap as a result
            return bitmap;
        }

        protected DPFP.FeatureSet ExtractFeatures(DPFP.Sample Sample, DPFP.Processing.DataPurpose Purpose)
        {
            DPFP.Processing.FeatureExtraction Extractor = new DPFP.Processing.FeatureExtraction();  // Create a feature extractor
            DPFP.Capture.CaptureFeedback feedback = DPFP.Capture.CaptureFeedback.None;
            DPFP.FeatureSet features = new DPFP.FeatureSet();
            Extractor.CreateFeatureSet(Sample, Purpose, ref feedback, ref features);            // TODO: return features as a result?
            if (feedback == DPFP.Capture.CaptureFeedback.Good)
                return features;
            else
                return null;
        }

        protected void SetStatus(string status)
        {
            this.Invoke(new Function(delegate() {
                StatusLine.Text = status;
            }));
        }

        protected void SetPrompt(string prompt)
        {
            this.Invoke(new Function(delegate() {
                Prompt.Text = prompt;
            }));
        }
        protected void MakeReport(string message)
        {
            this.Invoke(new Function(delegate() {
                StatusText.AppendText(message + "\r\n");
            }));
        }

        private void DrawPicture(Bitmap bitmap)
        {
            this.Invoke(new Function(delegate() {
                Picture.Image = new Bitmap(bitmap, Picture.Size);   // fit the image into the picture box
            }));
        }

        private DPFP.Capture.Capture Capturer;

    }
}

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您没有显示DB交互代码，因此实际上没有人可以帮助您。要引导您了解所需内容，请执行以下操作：-

过程

功能是将指纹保存到数据库的地方。 将转换后的

位图

或直接

DPFP保存。样本

格式为二进制数据或字节数组保存到数据库。选择取决于你的设计。将建议使用

位图

，以便于维护

受保护的虚拟无效进程（DPFP.Sample）{

}

SaveToDB

函数不应该是问题。参考

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你的问题是什么？如何将指纹模板保存到SQL数据库关于如何使用C#和SQL Server保存数据的示例数不胜数--发布200行代码不是一个好问题。请阅读关于提出一个好问题的常见问题解答，并在实际有问题时返回。有工作做并不是在这里发帖的理由。这不是工作，这是我最后一年的项目。我真的需要帮助，每次我来这里都没有人想帮我，总是说我应该先做这个或那个，难道没有人能帮我吗？

    // Draw fingerprint sample image.
    var fingerprintBMP = DrawPicture(ConvertSampleToBitmap(Sample));
    //Call a function eg. SaveToDB(fingerprintBMP) to save to DB