asp单元格或者字段变色

<cc1:CHMTWebGrid ID="grdDetail" runat="server" TabIndex="-1" Width="98%" HorizontalAlign="left"     AllowColSizing="True" AllowCustomPaging="True" EnableTheming="True" IsTranfer="False"     IsAllowPaging="False" AllowSorting="false" OnItemDataBound="grdDetail_ItemDataBound">

protected void grdDetail_ItemDataBound(object sender, C1ItemEventArgs e)
{   int intYear = System.Convert.ToInt32(ddlFindYear.SelectedValue);//获取年份
int intMonth = System.Convert.ToInt32(ddlMonth.SelectedValue);  //获取月份
int intDayCount = DateTime.DaysInMonth(intYear, intMonth);      //获取该年月天数
//循环所有动态列
for (int i = 0; intDayCount > i; i++)
{
//休假类型：休息，调休，病假，年假，事假，团队活动，1点值班，节假日值班，其它
//本休，字段变红
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days"+(i+1)).ToString().Trim()) == "休息")
{
e.Item.Cells[3 + i + 1].Style.Add("color", "Red");
}
//调休，背景色淡蓝
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days"+(i+1)).ToString().Trim()) == "调休")
{
e.Item.Cells[3 + i + 1].BackColor = System.Drawing.Color.LightBlue;
}
//病假，背景色
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days" + (i + 1)).ToString().Trim()) == "病假")
{
e.Item.Cells[3 + i + 1].BackColor = System.Drawing.Color.DeepSkyBlue;
}
//年假，背景色黄色
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days"+(i+1)).ToString().Trim()) == "年假")
{
e.Item.Cells[3 + i + 1].BackColor = System.Drawing.Color.Yellow;
}
//事假，背景色粉红色
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days" + (i + 1)).ToString().Trim()) == "事假")
{
e.Item.Cells[3 + i + 1].BackColor = System.Drawing.Color.Pink;
}
//团队活动，背景色LawnGreen
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days" + (i + 1)).ToString().Trim()) == "团队活动")
{
e.Item.Cells[3 + i + 1].BackColor = System.Drawing.Color.LawnGreen;
}
//1点值班，背景色粉红色
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days" + (i + 1)).ToString().Trim()) == "1点值班")
{
e.Item.Cells[3 + i + 1].BackColor = System.Drawing.Color.Aqua;
}
//节假日值班，字段蓝色
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days" + (i + 1)).ToString().Trim()) == "节假日值班")
{
e.Item.Cells[3 + i + 1].Style.Add("color", "Blue");
}
//其它，字段蓝色
if (System.Convert.ToString(DataBinder.Eval(e.Item.DataItem, "days" + (i + 1)).ToString().Trim()) == "其它")
{
e.Item.Cells[3 + i + 1].Style.Add("color", "Blue");
}
}

}