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ExtAspNet依据Grid导出Excel

 protected void Button1_Click(object sender, EventArgs e)
    {
        Response.ClearContent();
        Response.AddHeader("content-disposition", "attachment; filename=MyExcelFile.xls");
        Response.ContentType = "application/excel";
        Response.Write(GetGridTableHtml(Grid1));
        Response.End();
    }
    private string GetGridTableHtml(Grid grid)
    {
        StringBuilder sb = new StringBuilder();
        sb.Append("<table cellspacing=\"0\" rules=\"all\" border=\"1\" style=\"border-collapse:collapse;\">");
        sb.Append("<tr>");
        foreach (GridColumn column in grid.Columns)
        {
            sb.AppendFormat("<td>{0}</td>", column.HeaderText);
        }
        sb.Append("</tr>");

        foreach (GridRow row in grid.Rows)
        {
            sb.Append("<tr>");
            foreach (object value in row.Values)
            {
                string html = value.ToString();
                sb.AppendFormat("<td>{0}</td>", html);
            }
            sb.Append("</tr>");
        }
        sb.Append("</table>");
        return sb.ToString();
    }

ExtAspNet依据Grid导出Excel