Search error in Datagrid View

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DataGridView

search

Hello, I have made a search in the datagridview. I can search everything it is working fine. When the textbox is empty all the records in the datagridview is visible but i cannot add more records in this. These are my codes

Private Sub Button18_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button18.Click
      If RadioButton3.Checked = True Then
          Table2DataGridView.DataSource = Me.Rat.Table2.Select("Name like '" & TextBox3.Text & "%" & "'")
      End If
  End Sub

Help me out in this. Thanks in advance.