最近项目结束了，其中用到了Ext.Net的GridPanel导出Excel，简单的过程如下：
导出按钮的事件：
1 protected void btnExport_DirectClick(object sender, DirectEventArgs e) 2 { 3 if (Session["BorrowRecord"] != null) 4 { 5 DataTable tbBorrowRecord = (DataTable)Session["BorrowRecord"]; 6 if (tbBorrowRecord.Rows.Count > 0) 7 { 8 string content = m_BorrowBLL.GetExportHtml(tbBorrowRecord); // 把DataTable表格转成HTML 9 string title = "工具借用记录导出" + DateTime.Now.ToString("yyyyMMddHHmmss"); 10 Session["Content"] = content; 11 UIHelper.LogInfo("导出超修记录Exce", OperatorType.导出); 12 X.Redirect("/Ashx/LoadExcel.ashx?title=" + title); 13 } 14 else 15 { 16 // 没有数据，提示没有数据无法导出 17 Notification.Show( 18 new NotificationConfig 19 { 20 Title = "提示", 21 Icon = Icon.Information, 22 Html = "没有数据，无法导出！" 23 }); 24 } 25 } 26 }
根据DataTable拼凑出Html table结构：
1 /// <summary> 2 /// 根据借用记录数据表格获取导出的HTML 3 /// </summary> 4 /// <param name="tbBorrowRecord"></param> 5 /// <returns></returns> 6 public string GetExportHtml(DataTable tbBorrowRecord) 7 { 8 tbBorrowRecord = tbBorrowRecord.DefaultView.ToTable(false, new string[] { "SectionName", "Category", "Model", "Code", "BorrowMan", "BorrowTime", "ReturnMan", "ReturnTime", "State" }); 9 string html = string.Empty; 10 string datarow = string.Empty; 11 foreach (DataRow drBorrow in tbBorrowRecord.Rows) 12 { 13 string content = string.Empty; // 数据内容 14 datarow += "<tr>"; 15 for (int i = 0; i < tbBorrowRecord.Columns.Count; i++) 16 { 17 if (tbBorrowRecord.Columns[i].ColumnName == "State") 18 { 19 switch (drBorrow[i].ToString()) 20 { 21 case "1": 22 content = "未归还"; 23 break; 24 case "2": 25 content = "已归还"; 26 break; 27 } 28 } 29 else 30 { 31 content = drBorrow[i].ToString(); 32 33 } 34 datarow += "<td>" + content + "</td>"; 35 } 36 datarow += "</tr>"; 37 } 38 html = string.Format(@"<html> 39 <meta http-equiv='Content-Type' content='text/html;charset='utf-8' /> 40 <head></head> 41 <body> 42 <table style='border-collapse:collapse' bordercolor='#111111' cellSpacing='0' cellPadding='2' border='1'> 43 <thead> 44 <th>工区</th> 45 <th>工具类型</th> 46 <th>规格型号</th> 47 <th>条形码</th> 48 <th>借用人</th> 49 <th>借用日期</th> 50 <th>归还人</th> 51 <th>归还日期</th> 52 <th>状态</th> 53 </thead> 54 {0} 55 </table> 56 </body> 57 </html>", datarow); 58 59 return html; 60 }
在一般处理程序中导出Excel
1 using System.Web; 2 3 namespace HuaweiSoftware.EMMS_JCW.UI.Ashx 4 { 5 /// <summary> 6 /// 导出记录到Excel 7 /// </summary> 8 public class LoadExcel : IHttpHandler, System.Web.SessionState.IRequiresSessionState 9 { 10 public void ProcessRequest(HttpContext context) 11 { 12 string content = context.Session["content"].ToString(); 13 string title = context.Request["title"]; 14 context.Session.Remove("content"); 15 16 // 设置http流格式，写入拼接Excel内容 17 context.Response.Clear(); 18 context.Response.Buffer = true; 19 context.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(title) + ".xls"); 20 context.Response.ContentEncoding = System.Text.Encoding.UTF8; 21 context.Response.ContentType = "application/vnd.ms-excel"; 22 context.Response.Write(content); 23 context.Response.End(); 24 } 25 26 public bool IsReusable 27 { 28 get 29 { 30 return false; 31 } 32 } 33 } 34 }