silverlight RadGridView 动态添加数据列

        public void BindFaultGridInfo(IList<HealthStatusApp.Web.Models.FaultMajorModel> list)
        {
            rg_Fault.Columns.Clear();
            var DefferList = list.GroupBy(m => m.BurdenMajor).ToList();
            IList<HealthStatusApp.Web.Models.FaultMajorModel> itemFaultlist = DefferList[].OrderBy(m => m.TimeStamp).ToList();
            for (int i = ; i < itemFaultlist.Count; i++)
            {
                if (i == )
                {
                    Telerik.Windows.Controls.GridViewColumn mColumn = new Telerik.Windows.Controls.GridViewColumn();
                    mColumn.Header = "责任专业";
                    mColumn.HeaderTextAlignment = TextAlignment.Center;

                    //动态添加一列数据模板
                    StringBuilder mbTemp = new StringBuilder();
                    mbTemp.Append("<DataTemplate ");
                    mbTemp.Append("xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' ");
                    mbTemp.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' ");
                    mbTemp.Append("xmlns:d='http://schemas.microsoft.com/expression/blend/2008' ");
                    mbTemp.Append("xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' ");
                    mbTemp.Append("xmlns:telerik='http://schemas.telerik.com/2008/xaml/presentation' >");
                    mbTemp.Append("<TextBlock Text=\"{Binding BurdenMajor}\"/>");
                    mbTemp.Append("</DataTemplate>");
                    DataTemplate dtmTemplate = (DataTemplate)XamlReader.Load(mbTemp.ToString());
                    mColumn.CellTemplate = dtmTemplate;
                    rg_Fault.Columns.Add(mColumn);
                }

                Telerik.Windows.Controls.GridViewColumn oColumn = new Telerik.Windows.Controls.GridViewColumn();
                oColumn.Header = itemFaultlist[i].TimeStamp.ToString("yyyy/MM");
                oColumn.HeaderTextAlignment = TextAlignment.Center;
                oColumn.Width =  / itemFaultlist.Count;
                oColumn.TextAlignment = TextAlignment.Center;
                oColumn.FooterTextAlignment = TextAlignment.Center;

                //动态添加一列的数据模板
                StringBuilder sbTemp = new StringBuilder();
                sbTemp.Append("<DataTemplate ");
                sbTemp.Append("xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' ");
                sbTemp.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml' ");
                sbTemp.Append("xmlns:d='http://schemas.microsoft.com/expression/blend/2008' ");
                sbTemp.Append("xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' ");
                sbTemp.Append("xmlns:telerik='http://schemas.telerik.com/2008/xaml/presentation' >");
                sbTemp.Append("<TextBlock Text=\"{Binding FaultCount}\"/>");
                sbTemp.Append("</DataTemplate>");
                DataTemplate dtTemplate = (DataTemplate)XamlReader.Load(sbTemp.ToString());
                oColumn.CellTemplate = dtTemplate;
                rg_Fault.Columns.Add(oColumn);
            }
            rg_Fault.ItemsSource = list.Take(DefferList.Count);
        }