Hi all
I have a script to update the value from datagridview to database 
I do use a button insert ToolStripButton 
but not working 
hope people to help
thank !
<pre>
 Private Sub Form2_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
      
        conn = New SqlConnection("")
        conn.Open()
        Dim query As [String] = "SELECT * FROM dtaTraLoiChoVanBan"
        da = New SqlDataAdapter(query, conn)
        Dim cb As New SqlCommandBuilder(da)
        dt = New DataTable()
        da.Fill(dt)
        C1FlexGrid1.DataSource = dt
        conn.Close()
     
    End Sub
  Private Sub ToolStrip1_ItemClicked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ToolStripItemClickedEventArgs) Handles ToolStrip1.ItemClicked
        Select Case e.ClickedItem.Name
            Case "ToolStripButton1" '---> button insert
                da.Update(dt)
               
        End Select
    End Sub
</pre>