如何从ASP程序背后的c#代码传递一个全局字符串变量.. NET页面转换为经典的ASP页面

Question

所有，我正在维护一些旧的. asp代码，通过电子邮件请求工作订单的网站。该站点在最近迁移到IIS 7.5服务器之前一直正常工作。我不得不重新编码在ASP中做文件上传的部分。. NET与c#代码背后，我有麻烦得到一个字符串从新的传递到旧的。

以前，. asp代码使用ASPupload组件，由于合理的原因，在新的托管服务器上不再支持。ASPupload过去将两个上传的文件名(通过JavaScript作为隐藏输入值)传递给. asp代码的一部分，该部分使用这些文件名作为字符串(加上它已经拥有的路径字符串)。然后，. asp代码将这些文件附加到发送给完成工作订单的公司的电子邮件中。

我想把新的c#全局字符串变量传递给旧的。asp代码，因为它仍然像魅力一样工作。

我已经发展了Code Behind和ASP。. NET在这个问题上反映了Manoj Kumar Sharma出色的JavaScript，它将c#全局字符串变量发送给ASP。. NET代码作为JavaScript变量，我最初遇到了麻烦。谢谢! !现在我们需要弥合新的ASP和ASP之间的差距。. NET代码和旧的。asp代码。

下面是c#背后的代码(感谢Mason的编辑，现在更新这篇文章容易多了):

// From https://support.microsoft.com/en-us/kb/323246
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace CSharpUpload
{
    /// <summary>
    /// Browse to two files, upload to path on Server. Check if files haven't been downloaded, pass name.
    /// </summary>
    public class Scott_upload : System.Web.UI.Page
    {
        protected System.Web.UI.HtmlControls.HtmlInputFile File_Upload_1;
        protected System.Web.UI.HtmlControls.HtmlInputFile File_Upload_2;
        protected System.Web.UI.HtmlControls.HtmlInputButton Submit_Upload;
        public string UpFileName1 { get; set; }
        public string UpFileName2 { get; set; }
        public int File_Count;
        public bool Dont_show_buttons;
        private void Page_Load(object sender, System.EventArgs e)
        {
            // Put user code to initialize the page here
        }
        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            // 
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            // 
            InitializeComponent();
            base.OnInit(e);
        }
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {    
            this.Submit_Upload.ServerClick += new System.EventHandler(this.Submit_Upload_ServerClick);
            this.Load += new System.EventHandler(this.Page_Load);
        }
        #endregion
        private void Submit_Upload_ServerClick(object sender, System.EventArgs e)
        {
            bool no_file_selected = true;
            File_Count = 0;
            if( ( File_Upload_1.PostedFile != null ) && ( File_Upload_1.PostedFile.ContentLength > 0 ) )
            {
                string fn_1 = System.IO.Path.GetFileName(File_Upload_1.PostedFile.FileName);
                string server_path_string_1 = @"Data";
                string SaveLocation_1 = Server.MapPath(server_path_string_1) + fn_1;
                try
                {
                    File_Upload_1.PostedFile.SaveAs(SaveLocation_1);
                    this.UpFileName1 = fn_1;
                    File_Count = File_Count + 1;
                    Dont_show_buttons = true;
                    no_file_selected = false;
                    Response.Write("nUpload Document 1 "");
                    Response.Write(fn_1);
                    Response.Write("" has been SUCCESSFULLY uploaded!n");
                }
                catch ( Exception ex )
                {
                    Response.Write("Error: " + ex.Message);
                    //Note: Exception.Message returns a detailed message that describes the current exception. 
                    //For security reasons, we do not recommend that you return Exception.Message to end users in 
                    //production environments. It would be better to return a generic error message. 
                }
            }
            if( ( File_Upload_2.PostedFile != null ) && ( File_Upload_2.PostedFile.ContentLength > 0 ) )
            {
                string fn_2 = System.IO.Path.GetFileName(File_Upload_2.PostedFile.FileName);
                string server_path_string_2 = @"Data";
                string SaveLocation_2 = Server.MapPath(server_path_string_2) + fn_2;
                try
                {
                    File_Upload_2.PostedFile.SaveAs(SaveLocation_2);
                    this.UpFileName2 = fn_2;
                    File_Count = File_Count + 1;
                    Dont_show_buttons = true;
                    no_file_selected = false;
                    Response.Write("nUpload Document 2 "");
                    Response.Write(fn_2);
                    Response.Write("" has been SUCCESSFULLY uploaded!n");
                }
                catch ( Exception ex )
                {
                    Response.Write("Error: " + ex.Message);
                    //Note: Exception.Message returns a detailed message that describes the current exception. 
                    //For security reasons, we do not recommend that you return Exception.Message to end users in 
                    //production environments. It would be better to return a generic error message. 
                }
            }
            if (no_file_selected)
            {
                Response.Write("nPLEASE SELECT A FILE TO UPLOADn");
            }
        }
    }
}

。这是新的ASP。. NET可以看到文件名为"upFileName1"one_answers"upFileName2":

<%@ Page language="c#" src="Scott_upload.aspx.cs" AutoEventWireup="false" Inherits="CSharpUpload.Scott_upload"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
  <HEAD>
    <title>Scott_upload</title>
    <meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">
    <meta name="CODE_LANGUAGE" Content="C#">
    <meta name=vs_defaultClientScript content="JavaScript">
    <meta name=vs_targetSchema content="http://schemas.microsoft.com/intellisense/ie5">
  </HEAD>
  <body MS_POSITIONING="GridLayout">
        <form id="Scott_file_upload" method="post" enctype="multipart/form-data" runat="server">
            <% if (Dont_show_buttons == false) { %>
                <div>
                    Schedule A&B are required to complete the survey within 3 days.
                    <br><br>
                    Upload Document 1 <INPUT type=file id=File_Upload_1 name=File_Upload_1 runat="server" />
                    <br>
                </div>
                <div>
                    <br>
                    Upload Document 2 <INPUT type=file id=File_Upload_2 name=File_Upload_2 runat="server" />
                    <br>
                </div>
                <div>
                    <br><br>
                    <input type="submit" id="Submit_Upload" value="Click To Upload File(s)" NAME="Submit_Upload" runat="server" />
                    <br>
                </div>
            <% } %>
            <% else { %>
                <div>
                    <br><br>
                    Upload(s) COMPLETE.
                    <br>
                </div>
            <% } %>
        </form>
<script type="text/javascript">
    var upFileName1 = '<%= this.UpFileName1 %>';
    var upFileName2 = '<%= this.UpFileName2 %>';
    ' The code behind filenames are now appearing in the ASP.NET
    document.write(upFileName1);
    document.write(upFileName2);
</script>
</body>
</HTML>

现在是第三个请求部分，旧的。asp代码。请原谅它，我没有写它，但必须维护它(我更具体的变量名称)。首先是调用"Scott_upload"的部分。(注意ASPupload以前使用的隐藏输入"UploadedFile"):

<html>
<!-- ... -->
<body>
<!-- ... -->
<table class="tblw" border="0" cellpadding="0" cellspacing="0" align="center" ID="Table5">
<tr>
<form name="frmRequest" method="post" action="format_email.asp">
<!-- ... -->
    <table class="tblw" border="0" cellpadding="0" cellspacing="0" align="center" ID="Table13">
    <tr>
        <input type="hidden" name="UploadedFile1" value="" ID="UploadedFile1id">
        <input type="hidden" name="UploadedFile2" value="" ID="UploadedFile2id">
        <td class="container" align="center">
            <iframe src="Scott_upload.aspx" width=520 height=140 name="upload" scrolling="yes" scrollbars="yes" frameborder="0" border="0" style="border:0px;padding:0px;margin:0px;overflow:visible;">
            </iframe>
        </td>
    </tr>
    </table>
<!-- ... -->
    <input type="button" name="btn" value="REQUEST ORDER" class="submitbtn" onClick="validateForm();">
</tr>
</form>
</table>
<% Server.Execute %>
</body>
</html>

现在，别人写的旧上传代码对隐藏输入值(在另一个iframe中，在另一个表单中，IKR?!)做了这一点JavaScript操作，这在我的。aspx中不起作用:

<script language="javascript">
<% If Count = 1 Or Count = 2 Then %>
window.parent.document.getElementById("UploadedFile1id").value = document.frmUpload.FileName1.value;
<% End If %>
<% If Count = 2 Then %>
window.parent.document.getElementById("UploadedFile2id").value = document.frmUpload.FileName2.value;
<% End If %>
</script>

然后在"format_email.asp"中，文件名字符串用这一行分配:

strUpload1 = Trim(Request.Form("UploadedFile1"))
strUpload2 = Trim(Request.Form("UploadedFile2"))

如何从"Scott_upload. com"中获得"upFileName1"one_answers"upFileName2"?aspx"页分配给"strUpload1"one_answers"strUpload2"在旧的"format_email.asp"页?

Answer 1

你可以试试:

将这两个变量声明为页面的属性(类似于这样):

public class Scott_upload : System.Web.UI.Page
{
    public string UpFileName1 { get; set; }
    public string UpFileName2 { get; set; }
...

然后在.ASPX页面，你有你的javascript代码，嵌入值到javascript变量(像这样):

<script type="text/javascript">
    var upFileName1 = '<%= this.UpFileName1 %>';
    var upFileName2 = '<%= this.UpFileName2 %>';
</script>