Prevent deleted to be search on searchbox - sql

Question

I want to prevent the deleted Employee information to occur on my search bar as seen on the first picture there are only 3 users but when I put some numbers, this deleted one appear the code I use is as follows: Thankyouuu!
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles empId.TextChanged
Using db As New [Emme_Subic_Transport_Corporation_Payroll].EmmeSubicEntities
Dim drivers = db.UserDetails.Where(Function(c) c.EmployeeID.Contains(empId.Text)).ToList
If drivers.Count() > 0 Then
db.UserDetails.Where(Function(c) c.isDeleted <> 1).Load()
' db.UserDetails.Load()
UserDetailBindingSource.DataSource = db.UserDetails.Local
Else
MsgBox("No Match Found!")
End If
End Using
End Sub

Answer 1

Include another condition in the where which filters out the deleted users. And run the query off the UI thread. Here is a simple way to run your query on a background thread, off the UI, and it will only run when 1 second passes without an additional keystroke in the textbox
Private Sub TextBox1_TextChanged(sender As Object, e As EventArgs) Handles TextBox1.TextChanged
Static queryTimer As New System.Threading.Timer(AddressOf runQuery, Nothing, -1, -1)
queryTimer.Change(1000, -1)
End Sub
Private Sub runQuery(state As Object)
Dim employeeID As String
Me.Invoke(Sub() employeeID = empId.Text)
UserDetailBindingSource.DataSource = Nothing
Dim drivers As IEnumerable(Of UserDetails)
Using db As New [Emme_Subic_Transport_Corporation_Payroll].EmmeSubicEntities
drivers = db.UserDetails.Where(Function(c) c.EmployeeID.Contains(employeeID) AndAlso Not c.IsDeleted).ToList()
End Using
UserDetailBindingSource.DataSource = drivers
If Not drivers.Any() Then MsgBox("No Match Found!")
End Sub