Removing date filter

[nikel]

Hello, I have a datetimepicker on a toolstripbox. Filtering works fine. I created a button to reset datagridview but it doesn't work. Here's my code:

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

        Dim resetBtn = New Button With {.Text = "S", .Width = 20}
        Dim dtp = New DateTimePicker With {.Format = DateTimePickerFormat.Short, .Width = 80}

        'TODO: This line of code loads data into the 'MakbuzDataSet.makbuzT' table. You can move, or remove it, as needed.
        Me.MakbuzTTableAdapter.Fill(Me.MakbuzDataSet.makbuzT)

        MakbuzTDataGridView.Dock = DockStyle.Bottom

        Me.SavePending = True

        AddHandler dtp.ValueChanged, AddressOf DateTimePicker1_ValueChanged
        FillByTest08ToolStrip.Items.Add(New ToolStripControlHost(dtp))

        FillByTest08ToolStrip.Items.Add(New ToolStripControlHost(resetBtn))

    End Sub

    Private Sub resetBtn(sender As Object, e As EventArgs)
        MakbuzTBindingSource.Filter = ""
        MakbuzTDataGridView.DataSource = MakbuzTBindingSource
        MakbuzTBindingNavigator.BindingSource = MakbuzTBindingSource
        MakbuzTBindingSource.RemoveFilter()
    End Sub

And a screenshot:



I'm using visual studio 2012