/// <summary>
/// 导出EXCEL.
/// </summary>
/// <param name="sender"> </param>
/// <param name="e"> </param>
protected void lnbMenuExcel_Click(object sender, EventArgs e)
{
string operType = _hidOperType.Value;
AssetBLL astBLL = new AssetBLL();
Response.Clear();
Response.ContentType = "application/octet-stream";
Response.AppendHeader("content-disposition", "attachment;filename=assets.xls");
Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
StringBuilder sb = new StringBuilder();
sb.Append(" <html xmlns:o=\"urn:schemas-microsoft-com:office:office\"\r\nxmlns:x=\"urn:schemas-microsoft-com:office:excel\"\r\nxmlns=\"http://www.w3.org/TR/REC-html40\">\r\n
