How to delete checked column in datagrid view VB.Net

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VB

Team,

How to delete the checked row alone in data grid view.
I have below code to create check box

Private Sub ADD_Column()
      With AddColumn
          .HeaderText = "FollowUp"
          .Name = "FollowUp"
          .Width = 80
          .ReadOnly = False
      End With

      DataGridView1.Columns.Insert(0, AddColumn)

  End Sub

i use this to delete

Dim x As Integer
       For x = (DataGridView1.Rows.Count - 1) To 0 Step -1
           If DataGridView1.Rows(x).Cells(1).Value = False Then
               DataGridView1.Rows.RemoveAt(x)
           End If
       Next

But unable to delete. Please help me in deleting the checked row data alone