ต้องการใช้ datetime กับ textbox ในการค้นหาข้อมูลลงใน datagrid

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        sql = String.Format("select idcus,docid,dgetreport,names,adtambon,adaumper,adcity,teamasset1,teamasset2,dsentreport from customer where  dgetreport Between '" & dtp1.Value.ToString("yyyy-MM-dd") & "' AND '" & dtp2.Value.ToString("yyyy-MM-dd") & "' from customer where statusqc like '%" & txt1.Text & "%' ")
        dgv1.DataSource = cmd_dataTable()
    End Sub