VB.NET LISTBOX [in and out] - vb.net

Question

I was actually working an Attendance System, using listbox i want to monitor whether "employees" timed in or out.
txtEmpNum.text as my textbox,
rdTin as my radio button for time in,
rdTout as my radio button for time out,
lblName, lblDept, lblinout are just label. I want that if a user already timed in his/her name wont appear on my listbox rather msgbox pop up. But on this code although msgbox poped up, still the name of the employee appears on my listbox.
If txtEmpNum.Text = 8888 Then
If rdTin.Checked = True Then
For i As Integer = 0 To listEmp.Items.Count - 1
If (listEmp.Items(i).ToString.Contains("Bane Lim")) Then
MsgBox("String found at " & (i + 1).ToString)
Exit For
End If
Next
lblName.Text = "Bane"
lblDept.Text = "Admin"
lblinout.Text = "In"
listEmp.Items.Add("Bane Lim")
txtEmpNum.Clear()
ElseIf rdTout.Checked = True Then
lblName.Text = "Bane"
lblDept.Text = "Admin"
lblinout.Text = "Out"
listEmp.Items.Remove("Bane Lim")
txtEmpNum.Clear()
End If

Answer 1

Is the problem that the name is appearing a second time? You'll want to Exit Sub or Exit Function rather than Exit For. Exit For is kicking it from the loop but continuing with the remaining code (to add again).
Otherwise add a flag in there like:
If txtEmpNum.Text = 8888 Then
If rdTin.Checked = True Then
Dim bolFound As Boolean = False
For i As Integer = 0 To listEmp.Items.Count - 1
If (listEmp.Items(i).ToString.Contains("Bane Lim")) Then
MsgBox("String found at " & (i + 1).ToString)
bolFound = True
Exit For
End If
Next
If Not bolFound Then
lblName.Text = "Bane"
lblDept.Text = "Admin"
lblinout.Text = "In"
listEmp.Items.Add("Bane Lim")
txtEmpNum.Clear()
End If
ElseIf rdTout.Checked = True Then
lblName.Text = "Bane"
lblDept.Text = "Admin"
lblinout.Text = "Out"
listEmp.Items.Remove("Bane Lim")
txtEmpNum.Clear()
End If