Hi, I can´t get the WebDataGrid displaying numeric data with format.

<ig:WebDataGrid ID="grdResultados" runat="server" Width="100%" AutoGenerateColumns="False">
	<Behaviors>
        	<ig:Paging Enabled="true" PageSize="20" PagerMode="NumericFirstLast" PagerAppearance="Top" FirstPageText="Primera" QuickPages="3">
                </ig:Paging>
                <ig:Filtering>
                </ig:Filtering>
	</Behaviors>
</ig:WebDataGrid>

Code behind:

    private void GetResults()
    {
        //Culture info del cliente
        if (Request.UserLanguages.Count() > 0)
            System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo(Request.UserLanguages[0]);

        DataSet ds = mServer.ExecuteQuery(q);
        Session["resultSet"] = ds.Tables[0];
        for (int i = 0; i < ds.Tables[0].Columns.Count; i++)
        {
                var lField = new BoundDataField();
                lField.DataType = "System.Single";
                lField.DataFormatString = "{0:N}";
                lField.DataFieldName = ds.Tables[0].Columns[i].ColumnName;
                lField.Key = ds.Tables[0].Columns[i].ColumnName;
                lField.Header.Text = ds.Tables[1].Rows[i].ItemArray[0].ToString();
                grdResultados.Columns.Add(lField);
        }
        grdResultados.DataSource = ds.Tables[0];
        grdResultados.DataBind();
        grdResultados.Behaviors.Paging.PageIndex = 0;
        grdResultados.Behaviors.Paging.LastPageText = "Última(" + grdResultados.Behaviors.Paging.PageCount.ToString() + ")";
        upResultados.Update();
    }

But the grid shows like this:

Even when the culture Info is spanish.

Any clue?

Thanks in advance, regards