Excel导出采用mvc的ExcelResult继承遇到的问题

ExcelResult继承：ViewResult（只支持excel版本2003及兼容2003的版本）通过视图模板生成excel

	/// <summary>

	/// ms-excel视图

	/// </summary>

	public class ExcelResult:ViewResult

	{

		#region 字段

		private string _fileName;

		#endregion

		#region 构造函数

		public ExcelResult(string fileName, object model)

			: this(null, fileName, model)

		{

		}

		public ExcelResult(string viewName, string fileName, object model)

		{

			this.ViewName = viewName;

			this.ViewData.Model = model;

			_fileName = fileName;

		}

		#endregion

		#region 重写方法

		public override void ExecuteResult(ControllerContext context)

		{

            base.ExecuteResult(context);

            var response = context.HttpContext.Response;

            response.ContentType = "application/ms-excel";

            response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");

            //response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");

            response.Charset = "utf-8";

            response.Headers.Set("Content-Disposition", string.Format("attachment; filename={0}-{1:yyyy-MM-dd}.xls", _fileName, DateTime.Now));

		}

		#endregion

	}

　　方法调用：

ActionResult 方法（）{

return ExcelView("Exportinfo", "信息", cooperates.ToList());// cooperates.ToList()查询到的数据列表

}

视图页不用生成控制方法：

@model IEnumerable<Zhuoli.Model.BInfo>

@{

        Layout = null;

 }

    <table cellspacing="" cellpadding="" rules="all" border="">

        <thead>

            <tr>

                <th>编号</th>

            </tr>

        </thead>

        <tbody id="list-table-body">

            @foreach (var item in Model)

            {

                <tr>

                    @*编号*@

                    <td>@item.ID</td>

                </tr>

            }

        </tbody>

    </table>