从AjaxToolkit

时间:2016-01-21 12:44:06

标签: c# asp.net ajax ajaxcontroltoolkit

我试图通过AjaxFileUpload上传文件,我已经完成了。但是现在我还需要知道2个参数,1是在URL adreess myPage.aspx上给出的?参数= 2

第二个是ViewState。

但是在事件OnUploadStart或OnUploadComplete

当我尝试会话时,我无法访问这些值事件。

我该如何解决这个问题?

这是我的ASPX:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="AutoUpload.aspx.cs" Inherits="AutoUpload" %>
<%@ Register TagPrefix="ajaxToolkit" Namespace="AjaxControlToolkit" Assembly="AjaxControlToolkit, Version=15.1.4.0, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e" %>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
      <title></title>
     <script type="text/javascript" src="scripts/jquery-1.3.2.min.js">    </script>
</head>
<body>
<form id="form1" runat="server">
<div>
    <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>

    <asp:TextBox runat="server" ID="txtValue"></asp:TextBox>
    <asp:Button runat="server" ID="btnSetValue" Text="set" OnClick="btnSetValue_OnClick"/>
    <asp:HiddenField runat="server" ID="hiddenValue"/>

    <ajaxToolkit:AjaxFileUpload ID="AjaxFileUpload" MaximumNumberOfFiles="50" AllowedFileTypes="jpg,jpeg"  OnUploadComplete="AjaxFileUpload_OnUploadComplete" OnUploadStart="AjaxFileUpload_OnUploadStart" runat="server" />
</div>
</form>

这是我的服务器端

     using System;
     using AjaxControlToolkit;

     public static class Validators
     {
          public static bool IsNumeric(this string value)
          {
               int myInt;
               bool isNumerical = int.TryParse(value, out myInt);
               return isNumerical;
          }
      }

public partial class AutoUpload : System.Web.UI.Page
{
    public int Recid
    {
        get
        {
            if ((ViewState["Recid"] != null) && ((ViewState["Recid"].ToString()).IsNumeric()))
                return Convert.ToInt32(ViewState["Recid"]);
            return 0;
        }
        set { ViewState["Recid"] = value; }
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        string id = Request.QueryString["id"];
        if (!string.IsNullOrEmpty(id) && id.IsNumeric())
            Recid = Convert.ToInt32(id);
    }

    protected void btnSetValue_OnClick(object sender, EventArgs e)
    {
        hiddenValue.Value = txtValue.Text.ToString();
    }


    protected void AjaxFileUpload_OnUploadStart(object sender, AjaxFileUploadStartEventArgs e)
    {
        int myId = Recid; // THIS IS ALWAYS 0
        string otherValue = hiddenValue.Value;
    }

    protected void AjaxFileUpload_OnUploadComplete(object sender, AjaxFileUploadEventArgs e)
    {
        int myId = Recid; // THIS IS ALWAYS 0
        string otherValue = hiddenValue.Value;

        AjaxFileUpload.SaveAs(Server.MapPath("~/" + e.FileName));
    }


}

如果您尝试使用参数运行aspx,例如?id = 12,则应将其存储在Recid中,输入字段中的值也应存储在hiddenValue中。

但是当我上传文件(事件OnUploadStart或OnUploadComplete)时,我无权访问这些值,我也尝试了Session,但它也没有用。

1 个答案:

答案 0 :(得分:1)

到目前为止,AjaxFileUpload不会在最新发布的15.1.4版本中保留查询字符串参数。

但是,您可以下载并编译已解决此问题的source code,并且AjaxFileUpload会保留查询字符串参数。