title: AddDays from DateTimePicker and Show it again into DateTimePicker VB.NET
body: <p>I have 1 textbox and 1 datetimepicker.
  The textbox is to count how many days that I want to add.</p>
  
  <p>Then when I'm lostfocus from the textbox, the datetimepicker will add the new value which is plus from the textbox.</p>
  
  <p>This is how I'm doing but I've got nothing:</p>
  
  <pre><code>Dim waktu As Integer = pengerjaan_tb.Text
  Dim datex As DateTime = DateTime.ParseExact(
  pengerjaan_dtp.Text, "MM/dd/yyyy", CultureInfo.InvariantCulture)
  datex.AddDays(5)
  MsgBox(datex)
  pengerjaan_dtp.Value = datex.ToString("MM/dd/yyyy")
  </code></pre>
  
  <p>I show it in msgbox but the date is not renew with the new value. How could this be happening? What have I done wrong?</p>