problem when displaying data from DataTable to DataGrid View

Question

HI

- Use this function to display data from DataTable to DataGrid View.

- Everything Is fine.if No columns are added to the edit And delete column buttons

-Many problems occur When adding columns To make edits And deleting button in column, when columns disappear Or additional columns appear. I don't know what the problem is.
The code works fine without the edit button column Or delete button cell in columns, but I need it on the front of the invoice datagridview .

function fill datagridview from datatable

  Public Sub Filldatg( ByVal dg As DataGridView, ByVal dT As DataTable, ByVal qurey As String)
       
        con.Open()
        'dg.Columns.Clear()

        Using cmd As SqlCommand = New SqlCommand(qurey, con)
            Using DataAdapter = New SqlDataAdapter(cmd)
                dT.Clear()
                dg.Refresh()
                DataAdapter.Fill(dT)
                dg.DataSource = dT
                dg.ClearSelection()
                dg.CurrentCell = Nothing
                DataAdapter.Dispose()
                con.Close()
            End Using
        End Using
           End Sub

display datafrom sql table 

    
dim DTBILL as new datatable
 Filldatg(Me, DATAG_SALE, DTBILL, "SELECT  BILLPURCHPART_ID,BILLPURCHPART_CODE,BILLPURCHPART_TYPECODE, BILLPURCHPART_NAME,BILLPURCHPART_DESCRIPTION,BILLPURCHPART_PRICE,BILLPURCHPART_COUNT, BILLPURCHPART_TOT  FROM BILLPURCHPART_TB WHERE BILLPURCHPART_CHECK=1   ORDER BY BILLPURCHPART_ID DESC")
'insert column button
            Dim column2, COLUMN1 As New DataGridViewButtonColumn()

            column2.Tag = False
            column2.Name = "UPDAT"
            column2.UseColumnTextForButtonValue = True
            column2.Text = "UPDAT"

            COLUMN1.Tag = False
            COLUMN1.Name = "DELE"
            COLUMN1.UseColumnTextForButtonValue = True
            COLUMN1.Text = "DELE"

            DATAG_SALE.Columns.Insert(8, column2)
            DATAG_SALE.Columns.Insert(9, COLUMN1)

'change header width
            DATAG_SALE.Columns(0).Width = 0
            DATAG_SALE.Columns(1).Width = 0
            DATAG_SALE.Columns(2).Width = 0
            DATAG_SALE.Columns(3).Width = 0
            DATAG_SALE.Columns(4).Width = 140
            DATAG_SALE.Columns(5).Width = 40
            DATAG_SALE.Columns(6).Width = 40
            DATAG_SALE.Columns(7).Width = 40
            DATAG_SALE.Columns(8).Width = 50
            DATAG_SALE.Columns(9).Width = 50

            DATAG_SALE.Columns(0).HeaderText = "ID"
            DATAG_SALE.Columns(1).HeaderText = "CODE"
            DATAG_SALE.Columns(2).HeaderText = "BILLCODE"
            DATAG_SALE.Columns(3).HeaderText = "NAME"
            DATAG_SALE.Columns(4).HeaderText = "TYPE"
            DATAG_SALE.Columns(5).HeaderText = "PRICE"
            DATAG_SALE.Columns(6).HeaderText = "COUNT"
            DATAG_SALE.Columns(7).HeaderText = "TOT"
            DATAG_SALE.Columns(8).HeaderText = "UPDATE"
            DATAG_SALE.Columns(9).HeaderText = "DELETE"


        Catch ex As Exception

            MsgBox(ex.Message)

        End Try