asp.net 导出Excel

分享一个asp.net 导出假Excel代码。优点，不用借助于任何插件比如（NPOI）,复制代码，修改grid.DataSource直接导出。

先看导出后的效果图

 System.Web.UI.WebControls.DataGrid grid = new DataGrid();
                 grid.CellSpacing = ;
                 grid.CellPadding = ;
                 grid.EnableViewState = false;
                 grid.DataSource = tableCars;
                 grid.DataBind();
                 foreach (DataGridColumn clos in grid.Columns)
                 {
                     clos.HeaderStyle.Width = ;
                     clos.ItemStyle.Width = ;
                 }
                 System.IO.StringWriter tw = new System.IO.StringWriter();
                 HtmlTextWriter hw = new HtmlTextWriter(tw);
                 grid.RenderControl(hw);
                 string fileName = System.Web.HttpUtility.UrlEncode(DateTime.Now.ToString("yyyyMMddHHmmss") + ".xls", System.Text.Encoding.UTF8);
                 HttpContext.Current.Response.Charset = "utf-8";
                 HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
                 HttpContext.Current.Response.ContentType = "application/ms-excel";
                 HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileName);
                 HttpContext.Current.Response.Write(tw.ToString());
                 HttpContext.Current.Response.End();