如何将注册指纹直接保存到MySQL数据库（VB.net）（Digital Persona U.are.U 4500） [英] How to save the enrolled fingerprint directly to MySQL database (VB.net) (Digital Persona U.are.U 4500)

问题描述

**这些是注册指纹的代码。但我希望它直接保存在MySQL数据库中。

**These are the codes of enrolling fingerprint. but I want it to save directly in MySQL database.

' NOTE: This form is inherited from the CaptureForm,
' so the VisualStudio Form Designer may not load this properly
' (at least until you build the project).
' If you want to make changes in the form layout - do it in the base CaptureForm.
' All changes in the CaptureForm will be reflected in all derived forms 
' (i.e. in the EnrollmentForm and in the VerificationForm)


Public Class EnrollmentForm
  Inherits CaptureForm

  Public Event OnTemplate(ByVal template)

  Private Enroller As DPFP.Processing.Enrollment

  Protected Overrides Sub Init()
    MyBase.Init()
    MyBase.Text = "Fingerprint Enrollment"
    Enroller = New DPFP.Processing.Enrollment()     ' Create an enrollment.
    UpdateStatus()
  End Sub

  Protected Overrides Sub Process(ByVal Sample As DPFP.Sample)
    MyBase.Process(Sample)

    ' Process the sample and create a feature set for the enrollment purpose.
    Dim features As DPFP.FeatureSet = ExtractFeatures(Sample, DPFP.Processing.DataPurpose.Enrollment)

    ' Check quality of the sample and add to enroller if it's good
    If (Not features Is Nothing) Then
      Try
        MakeReport("The fingerprint feature set was created.")
        Enroller.AddFeatures(features)        ' Add feature set to template.
      Finally
        UpdateStatus()

        ' Check if template has been created.
        Select Case Enroller.TemplateStatus
          Case DPFP.Processing.Enrollment.Status.Ready    ' Report success and stop capturing
            RaiseEvent OnTemplate(Enroller.Template)
            SetPrompt("Click Close, and then click Fingerprint Verification.")
            StopCapture()

          Case DPFP.Processing.Enrollment.Status.Failed   ' Report failure and restart capturing
            Enroller.Clear()
            StopCapture()
            RaiseEvent OnTemplate(Nothing)
            StartCapture()

        End Select
      End Try
    End If
  End Sub

  Protected Sub UpdateStatus()
    ' Show number of samples needed.
    SetStatus(String.Format("Fingerprint samples needed: {0}", Enroller.FeaturesNeeded))
  End Sub

End Class

推荐答案

可以在Enroller.Template中找到已注册的指纹数据。然后使用MemoryStream来保存和序列化所述指纹数据。然后将memorystream传递给你的byte []，以便将它上传到数据库中的longblob列。





这是我的示例代码以c＃格式：

The enrolled fingerprint data can be found in Enroller.Template. Then use MemoryStream to to save and serialize the said fingerprint data. then pass the memorystream to your byte[] in order to upload it to your longblob column in your database.


Here's My example code in c# format:

byte[] byted;
private void featureS()
        {
            this.Invoke(new Function(delegate ()
            {
                MemoryStream fingerprintData = new MemoryStream();
                Enroller.Template.Serialize(fingerprintData);
                byted = fingerprintData.ToArray();

                //insert your mysql command here then
            }));
        }

我希望这会给你一个想法。但在保存指纹模板之前，必须首先验证它是否已经存在于数据库中。

I hope this gives you an idea. But before you save the fingerprint template, you must first verify if it already exist in the database.

好日子先生Louie Aguilar，你有VB代码的样本吗？提前谢谢：）

Good day sir Louie Aguilar, Do you have sample for this in VB codes? thanks in advance :)

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