title: How to Get User Info in Fingerprint X100-C With Zkemkeeper Using VB.NET
body: <p>I have a problem in my project.. i already get Log data in fingerprint device. But when i want to get User Info In fingerprint device to my vb.net application i get error message like this :</p>
  
  <blockquote>
    <p>Attempted to read or write protected memory. This is often an
    indication that other memory is corrupt.</p>
  </blockquote>
  
  <p>And this is my code for get User Info :</p>
  
  <pre><code>Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
      Dim UserID As String
      Dim Passwd As String
      Dim Privilege2 As Integer
  
      Dim dwEnrollNumber As String
  
      Dim lvItem As New ListViewItem("Items", 0)
  
      Dim i As Integer = 0
  
      With ListView3
          .View = View.Details
          .GridLines = True
          .Columns.Add("No.", 100)
          .Columns.Add("Enroll", 100)
          .Columns.Add("User Name", 100)
          .Columns.Add("Password", 100)
          .Columns.Add("Privilege", 100)
          .Columns.Add("Privilege", 100)
      End With
  
      ListView3.Items.Clear()
      If zkem.ReadAllUserID(1) Then
          While zkem.SSR_GetUserInfo(1, dwEnrollNumber, UserID, Passwd, Privilege2, Enabled)
              i += 1
  
              lvItem = ListView3.Items.Add(i.ToString())
              lvItem.SubItems.Add(dwEnrollNumber)
              lvItem.SubItems.Add(UserID)
              lvItem.SubItems.Add(Passwd)
              lvItem.SubItems.Add(Privilege2)
              lvItem.SubItems.Add(Privilege2)
  
              Application.DoEvents()
          End While
      End If
  End Sub
  </code></pre>
  
  <p>What must i do for repair it.</p>
  
  <p>By the way i using Zkemkeeper SDK.</p>
  
  <p>And sorry for my english</p>