我是初学者，在按照书上的代码练习时，发现有Exception抛出，以下是源代码，请指教
upload.html:
<html>
<head>
<title>文件上传</title>
<body>
<h3>文件上传</h3>
<form action="upload.aspx" method="post" enctype="multipart/form-data">
选择一个图像文件<input type="file" accept="image/*" name="uploadFile" id="uploadFile">
<hr>
<input type="submit" />
<input type="reset" />
</body>
</html>upload.aspx:
<html>
<head>
<title>文件上传</title>
<script Language="C#" runat="server">
void Page_Load()
{
try
{
foreach(string key in Request.Files.Keys)
{
HttpPostedFile postedFile=Request.Files[key];
postedFile.SaveAs("d:\\test\\asp.net\\Lesson2");
Text1.Text+=postedFile.FileName+"<br>";
}
}
catch(Exception e)
{
Text1.Text=e.ToString();
return;
}
Text1.Text+="上传成功！！！";
}
</script>
<body>
<asp:Label id="Text1" runat="server" />
</body>
</html>
upload.html:
<html>
<head>
<title>文件上传</title>
<body>
<h3>文件上传</h3>
<form action="upload.aspx" method="post" enctype="multipart/form-data">
选择一个图像文件<input type="file" accept="image/*" name="uploadFile" id="uploadFile">
<hr>
<input type="submit" />
<input type="reset" />
</body>
</html>upload.aspx:
<html>
<head>
<title>文件上传</title>
<script Language="C#" runat="server">
void Page_Load()
{
try
{
foreach(string key in Request.Files.Keys)
{
HttpPostedFile postedFile=Request.Files[key];
postedFile.SaveAs("d:\\test\\asp.net\\Lesson2");
Text1.Text+=postedFile.FileName+"<br>";
}
}
catch(Exception e)
{
Text1.Text=e.ToString();
return;
}
Text1.Text+="上传成功！！！";
}
</script>
<body>
<asp:Label id="Text1" runat="server" />
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>多文件上传</title>
<script language="JavaScript">
function addFile()
{
var str = '<INPUT type="file" size="50" NAME="File">'
document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str)
}
</script>
</HEAD>
<body>
<form id="form1" method="post" runat="server" enctype="multipart/form-data">
<div align="center">
<h3>多文件上传</h3>
<P id="MyFile"><INPUT type="file" size="50" NAME="File"></P>
<P>
<input type="button" value="增加(Add)" onclick="addFile()">
<input onclick="this.form.reset()" type="button" value="重置(ReSet)">
<asp:Button Runat="server" Text="开始上传" ID="UploadButton"></asp:Button>
</P>
<P>
<asp:Label id="strStatus" runat="server" Font-Names="宋体" Font-Bold="True" Font-Size="9pt"
Width="500px" BorderStyle="None" BorderColor="White"></asp:Label>
</P>
</div>
</form>
</body>
</HTML>UpLoad.aspx.csusing 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 WebPortal
{
/// <summary>
/// UpLoad 的摘要说明。
/// 实现多文件上传
/// </summary>
public class Upload : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Button UploadButton;
protected System.Web.UI.WebControls.Label strStatus; private void Page_Load(object sender, System.EventArgs e)
{
/// 在此处放置用户代码以初始化页面
if (this.IsPostBack) this.SaveImages();
} private Boolean SaveImages()
{
///'遍历File表单元素
HttpFileCollection files = HttpContext.Current.Request.Files; /// '状态信息
System.Text.StringBuilder strMsg = new System.Text.StringBuilder();
strMsg.Append("上传的文件分别是：<hr color=red>");
try
{
for(int iFile = 0; iFile < files.Count; iFile++)
{
///'检查文件扩展名字
HttpPostedFile postedFile = files[iFile];
string fileName, fileExtension;
fileName = System.IO.Path.GetFileName(postedFile.FileName);
if (fileName != "")
{
fileExtension = System.IO.Path.GetExtension(fileName);
strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>");
strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>");
strMsg.Append("上传文件的文件名：" + fileName + "<br>");
strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>");
///'可根据扩展名字的不同保存到不同的文件夹
///注意：可能要修改你的文件夹的匿名写入权限。
postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images/") + fileName);
}
}
strStatus.Text = strMsg.ToString();
return true;
}
catch(System.Exception Ex)
{
strStatus.Text = Ex.Message;
return false;
}
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
} /// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.ID = "Upload";
this.Load += new System.EventHandler(this.Page_Load); }
#endregion
}
}
http://blog.csdn.net/sunnystar365/archive/2005/10/10/498573.aspx