目录文件操作实例[3]_使用文件预览显示文件信息

icebox126

于 2007-11-27 18:44:00 发布

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分类专栏： .net 文章标签： asp div server stylesheet generator table

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本文介绍了一个ASP.NET Web应用程序，用于显示指定文件的各种属性，包括文件名、完整路径、所在目录、创建时间、大小、最后访问时间和最后修改时间。此外，还展示了如何读取并显示文件的部分内容。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

在此实例中仍需要先将System.IO空间引入，然后在VS编辑器中输入以下代码，且以ShowFile.aspx保存。

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;

using System.IO;

namespace PracticeProject.Practice1

{

/// <summary>

/// ShowFile 的摘要说明。

/// </summary>

public class ShowFile : System.Web.UI.Page

{

protected System.Web.UI.WebControls.Label lblFileFullName;

protected System.Web.UI.WebControls.Label lblFileDirectoryName;

protected System.Web.UI.WebControls.Label lblFileCreationTime;

protected System.Web.UI.WebControls.Label lblFileSize;

protected System.Web.UI.WebControls.Label lblFileLastAccessTime;

protected System.Web.UI.WebControls.Label lblFileLastWriteTime;

protected System.Web.UI.HtmlControls.HtmlGenericControl divFileContent;

protected System.Web.UI.WebControls.Label lblFileName;

private void Page_Load(object sender, System.EventArgs e)

{

if (!IsPostBack)

{

BindFileInfo();

}

}

private void BindFileInfo()

{

string strFile2Show = Request.QueryString.Get("file");

FileInfo file = new FileInfo(strFile2Show);

lblFileName.Text = file.Name;

lblFileFullName.Text = file.FullName;

lblFileDirectoryName.Text = file.DirectoryName;

lblFileCreationTime.Text = file.CreationTime.ToString();

lblFileSize.Text = file.Length.ToString();

lblFileLastAccessTime.Text = file.LastAccessTime.ToString();

lblFileLastWriteTime.Text = file.LastWriteTime.ToString();

StreamReader sr = file.OpenText();

char[] theBuffer = new char[255];

int nRead = sr.ReadBlock(theBuffer,0,255);

divFileContent.InnerHtml = "<pre>";

divFileContent.InnerHtml += Server.HtmlEncode(new String(theBuffer,0,nRead));

divFileContent.InnerHtml += "</pre>";

}

Web 窗体设计器生成的代码

}

}

<%@ Page language="c#" Codebehind="ShowFile.aspx.cs" AutoEventWireup="false" Inherits="PracticeProject.Practice1.ShowFile" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

<HTML>

<HEAD>

<title>ShowFile</title>

<meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">

<meta content="C#" name="CODE_LANGUAGE">

<meta content="JavaScript" name="vs_defaultClientScript">

<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">

<LINK rel="stylesheet" type="text/css" href="../css/css1.css">

</HEAD>

<body>

<form id="Form1" method="post" runat="server">

<TABLE id="Table1" cellSpacing="1" cellPadding="3" width="600" bgColor="#d6d6d6" border="0"

align="left">

<TR>

<TD width="11%" bgColor="#ffffff">

<DIV style="DISPLAY: inline; WIDTH: 63px; HEIGHT: 15px" ms_positioning="FlowLayout">名称：</DIV>

</TD>

<TD width="89%" bgColor="#ffffff">

<asp:Label id="lblFileName" runat="server"></asp:Label></TD>

</TR>

<TR>

<TD width="11%" bgColor="#ffffff">

<DIV style="DISPLAY: inline; WIDTH: 63px; HEIGHT: 15px" ms_positioning="FlowLayout">完整目录：</DIV>

</TD>

<TD width="89%" bgColor="#ffffff">

<asp:Label id="lblFileFullName" runat="server"></asp:Label></TD>

</TR>

<TR>

<TD width="11%" bgColor="#ffffff">

<DIV style="DISPLAY: inline; WIDTH: 63px; HEIGHT: 15px" ms_positioning="FlowLayout">父目录：</DIV>

</TD>

<TD width="89%" bgColor="#ffffff">

<asp:Label id="lblFileDirectoryName" runat="server"></asp:Label></TD>

</TR>

<TR>

<TD width="11%" bgColor="#ffffff">

<DIV style="DISPLAY: inline; WIDTH: 63px; HEIGHT: 15px" ms_positioning="FlowLayout">创建日期：</DIV>

</TD>

<TD width="89%" bgColor="#ffffff">

<asp:Label id="lblFileCreationTime" runat="server"></asp:Label></TD>

</TR>

<TR>

<TD width="11%" bgColor="#ffffff">

<DIV style="DISPLAY: inline; WIDTH: 63px; HEIGHT: 15px" ms_positioning="FlowLayout">大小：</DIV>

</TD>

<TD width="89%" bgColor="#ffffff">

<asp:Label id="lblFileSize" runat="server"></asp:Label></TD>

</TR>

<TR>

<TD width="11%" bgColor="#ffffff">

<DIV style="DISPLAY: inline; WIDTH: 63px; HEIGHT: 15px" ms_positioning="FlowLayout">访问日期：</DIV>

</TD>

<TD width="89%" bgColor="#ffffff">

<asp:Label id="lblFileLastAccessTime" runat="server"></asp:Label></TD>

</TR>

<TR>

<TD width="11%" bgColor="#ffffff">

<DIV style="DISPLAY: inline; WIDTH: 63px; HEIGHT: 15px" ms_positioning="FlowLayout">修改日期：</DIV>

</TD>

<TD width="89%" bgColor="#ffffff">

<asp:Label id="lblFileLastWriteTime" runat="server"></asp:Label></TD>

</TR>

<TR>

<TD width="11%" bgColor="#ffffff" colSpan="2">

<DIV id="divFileContent" style="DISPLAY: inline; WIDTH: 584px; LINE-HEIGHT: 185%; HEIGHT: 15px"

runat="server" ms_positioning="FlowLayout"><FONT face="宋体"></FONT></DIV>

</TD>

</TR>

</TABLE>

</form>

</body>

</HTML>

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