UpdatePanel无法导出下载文件
2016-06-22 09:43
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转自 http://www.cnblogs.com/vipsoft/p/3298299.html protected void Page_Load(object sender, EventArgs e) { ScriptManager sm = Page.Master.FindControl("ScriptManager1") as ScriptManager; if (sm != null) { foreach (GridViewRow item in gvInvoiceHistory.Rows) { LinkButton lbtnTemp = item.FindControl("btnInvoiceNumber") as LinkButton; if (lbtnTemp != null) { sm.RegisterPostBackControl(lbtnTemp); } } } } protected void btnInvoiceNumber_OnClick(object sender, EventArgs e) { LinkButton btnTemp = sender as LinkButton; if (btnTemp != null) { var path = ConfigurationManager.AppSettings["InvoicePdfPath"]; var fileName = btnTemp.Text.Trim() + ".pdf"; if (!FileHandler.DownLoadFile(path, fileName)) { var msg = GetLocalResourceObject("InvoiceIsNotAvailable").ToString(); ScriptManager.RegisterStartupScript(upMain, upMain.Page.GetType(), "DownLoadFile", string.Format("alert('{0}');", msg), true); //如果不存在就跳转,参见 http://www.cnblogs.com/vipsoft/p/3627683.html //string url = "http://www.vipsoft.com.cn"; //ResponseRedirect.Redirect(Response, url, "_blank", "'toolbar=0,scrollbars=1,status=0,menubar=0,resizable=1,top=0,left=0,height=800,width=1000");} } } } //Updatepanel 会有异常 参考下面的链接查看下载方法 public static bool DownLoadFile(string path,string fileName) { bool result = false; string filePath = HttpContext.Current.Server.MapPath(path + fileName); if (File.Exists(filePath)) { FileInfo fileInfo = new FileInfo(filePath); HttpContext.Current.Response.Clear(); HttpContext.Current.Response.ClearContent(); HttpContext.Current.Response.ClearHeaders(); HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName); HttpContext.Current.Response.AddHeader("Content-Length", fileInfo.Length.ToString()); HttpContext.Current.Response.AddHeader("Content-Transfer-Encoding", "binary"); HttpContext.Current.Response.ContentType = "application/octet-stream"; HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8"); HttpContext.Current.Response.WriteFile(fileInfo.FullName); HttpContext.Current.Response.Flush(); HttpContext.Current.Response.End(); result = true; } return result; }
ScriptManager1 放在 MasterPage中,查找 ScriptManager1 时,
Page.Master.FindControl("ScriptManager1") as ScriptManager;
FileHandler文件下载:http://www.cnblogs.com/vipsoft/p/3521958.html
如果不存在就跳转,参见 http://www.cnblogs.com/vipsoft/p/3627683.html
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