我有一个非常简单的ASP.NET页面上传Excel工作簿,然后处理它。它使用AJAXFILEUPLOAD从ASP.NET AJAX的工具包...这里的标记:简单的ASP.NET文件上传
<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true"
CodeBehind="ImportWorkbook.aspx.cs" Inherits="Timesheet.ImportWorkbook" %>
<asp:Content ID="Content1" runat="server" ContentPlaceHolderID="HeaderContentPlaceHolder">
<h1 class="topContent">
Upload CPAS Timesheet Workbooks
</h1>
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="RightContentPlaceHolder" runat="server">
<br />
<br />
<asp:HiddenField ID="tbTSID" runat="server" />
<asp:HiddenField ID="tbWorkbookPath" runat="server" />
<ajaxToolkit:AjaxFileUpload ID="AjaxFileUpload1" runat="server" AllowedFileTypes="xls,xlsx,xlsm"
CssClass="dropdown" MaximumNumberOfFiles="1" OnUploadComplete="AjaxFileUpload1_UploadComplete" />
<br />
<br />
<asp:Panel ID="ProcessChoices" runat="server" >
<br />
<br />
<p>
Select how you want this workbook processed:</p>
<br />
<asp:RadioButtonList ID="rbChoices" runat="server" BorderStyle="Groove" BorderWidth="2px"
BorderColor="Black" BackColor="Teal" Font-Names="Tahoma" Font-Size="10pt" ForeColor="White"
Width="40%">
<asp:ListItem Value="True" Selected="True">  Replace ALL Items in the Timesheet</asp:ListItem>
<asp:ListItem Value="False">  Add Items from this Workbook to the Existing Timesheet Items</asp:ListItem>
</asp:RadioButtonList>
<br />
<br />
<asp:Button ID="btnValidate" runat="server" Text="Validate and Process"
BackColor="#B92217" ForeColor="White" BorderColor="#7C1810"
BorderStyle="Groove" Font-Names="Tahoma" onclick="btnValidate_Click" />
</asp:Panel>
</asp:Content>
<asp:Content ID="Content4" ContentPlaceHolderID="BottomSpanContentPlaceHolder" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
</asp:Content>
母版页和CSS的网页是微不足道的,只有格式化。
这里的隐藏代码:
using System;
using System.IO;
using TimesheetUtilites;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using AjaxControlToolkit;
namespace Timesheet
{
public partial class ImportWorkbook : System.Web.UI.Page
{
private const string HDriveLocation= "H:\\mtv\\secure\\Construction\\Access\\CPAS WorkArea\\TimesheetUploads\\";
private string strWorkbookPath;
private int currTSID;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Request.QueryString["ID"] != null)
{
tbTSID.Value = Request.QueryString["ID"]; // Storing the Timesheet ID in a hidden Textbox
}
}
else
{
if (!string.IsNullOrEmpty(tbWorkbookPath.Value))
{
ProcessChoices.Enabled = true;
}
}
int.TryParse(tbTSID.Value, out currTSID);
strWorkbookPath = tbWorkbookPath.Value;
}
protected void AjaxFileUpload1_UploadComplete(object sender, AjaxFileUploadEventArgs e)
{
strWorkbookPath = HDriveLocation + Path.GetFileName(e.FileName);
tbWorkbookPath.Value = strWorkbookPath;
AjaxFileUpload1.SaveAs(strWorkbookPath);
ProcessChoices.Enabled = true;
}
protected void btnValidate_Click(object sender, EventArgs e)
{
bool processOption;
bool.TryParse(rbChoices.SelectedValue, out processOption);
strWorkbookPath = tbWorkbookPath.Value;
TimesheetUtilites.ImportTimesheet imp = new ImportTimesheet(currTSID, strWorkbookPath, processOption);
}
}
}
我的问题很简单。虽然事件处理程序“AjaxFileUpload1_UploadComplete”工作正常,并上传在瞬间的文件,当我火“btnValidate_Click”事件时,“tbWorkbookPath.Value”已成为一个空字符串,而“ProcessChoices.Enabled”欢迎使用属性不更改。不用说,“上传完成”事件处理程序是我必须捕获此文件路径的唯一机会,所以我不知道我做错了什么。
我张贴在ASP.NET和去没有答案。任何人都可以给我一个想法从哪里开始?
所以问题是隐藏字段值重置为后空白之间的空白字符串。你有没有试过把断点放在哪里以确定它的重置位置?尝试在page_load中放置一个断点,如果它不是回发。如果触发你知道这是一个全新的要求,你就会有你的值存储在自发布此 – 2013-02-18 17:32:21
我已经试过几件事情会话变量或东西... 1.我删除了面板。有人在其他地方建议我与小组讨论范围问题......没有快乐。 2.我将隐藏的字段会话状态属性更改为false ...没有喜悦...改回。 3.我将隐藏字段更改为(非隐藏)文本框。在事件处理程序触发之前和之后,文本框始终显示为空白。 – 2013-02-18 17:54:34
那么,将路径存储在会话变量中作为下面的答案之一应该是非常有用的,但是看看值为何会被擦除的位置/为什么会很有趣。 – 2013-02-18 17:57:55