C# 多文件同时上传

最新推荐文章于 2023-03-23 10:39:01 发布

chokomo

最新推荐文章于 2023-03-23 10:39:01 发布

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分类专栏：笔记文章标签： c# div button exception string class

本文链接：https://blog.youkuaiyun.com/chokomo/article/details/1540061

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1 篇文章

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本文详细介绍了如何使用C#进行多文件的同时上传操作，重点解析了关键代码，涉及异常处理和UI交互元素如div、button的使用。

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HTML

特别要注意的是这行代码

<%@ Page language="c#" Codebehind="MultiFileUp.aspx.cs" AutoEventWireup="false" Inherits="Vista.Project.MultiFileUp" %>

<%@ Register TagPrefix="uc1" TagName="pageHead" Src="../Head/pageHead.ascx" %>

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

<HTML>

<HEAD>

<title>MultiFileUp</title>

function addFile()

{

var str = '<input type="file" size="50" Name="File">'

document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str)

}

</script>

</HEAD>

<body>

<P>

<uc1:pageHead id="PageHead1" runat="server"></uc1:pageHead></P>

<div class="tdT"> 多文件同时上载</div>

<br>

<asp:Button id="btUp" runat="server" Text="开始上载"></asp:Button>   

<asp:Label id="upmessage" runat="server"></asp:Label></DIV>

</FONT>

</form>

</body>

</HTML>

.CS

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.Text;

using System.IO;

using System.Configuration;

using System.Data.SqlClient;

namespace Vista.Project

{

/// <summary>

/// MultiFileUp 的摘要说明。

/// </summary>

public class MultiFileUp : System.Web.UI.Page

{

protected System.Web.UI.WebControls.Button btUp;

private readonly string SQLCONNECTIONSTRING = ConfigurationSettings.AppSettings["SQLCONNECTIONSTRING"].ToString();

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

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

{

// 在此处放置用户代码以初始化页面

}

private void GetupFile(string iUrl)

{

SqlConnection conn = new SqlConnection(SQLCONNECTIONSTRING);

string strCom = "insert into UpFile (FileUrl) values ('" + iUrl +"')";

SqlCommand comm = new SqlCommand(strCom,conn);

//定义访问数据库的类型为存储过程

try { conn.Open();}

catch (Exception ex){throw new Exception("数据库连接失败！",ex);}

try { comm.ExecuteNonQuery();}

catch (Exception ex){throw new Exception("数据库连接失败！",ex);}

}

private void MultiFileUpload()

{

HttpFileCollection fileList = HttpContext.Current.Request.Files;

//存放上载文件的操作消息

StringBuilder uploadMessage = new StringBuilder("当前上载的文件分别是：<hr color=red>");

int fileIndex = 0;

try

{

for (fileIndex = 0;fileIndex < fileList.Count;fileIndex++)

{

//获取当前上载的文件

HttpPostedFile postedFile = fileList[fileIndex];

string fileName;

string fileExtension;

//获取上载文件的文件名称

fileName = Path.GetFileName(postedFile.FileName);

if (fileName != null)

{

fileExtension = Path.GetExtension(fileName);

uploadMessage.Append("上载的文件类型："+ postedFile.ContentType.ToString()+"<br>");

uploadMessage.Append("客户端文件地址：" + postedFile.FileName + "<br>" );

uploadMessage.Append("上载文件的文件名：" + fileName + "<br>" );

uploadMessage.Append("上载文件的扩展名：" + fileExtension + "<br>" );

postedFile.SaveAs(MapPath("Photo/") + fileName);

GetupFile(fileName);

}

upmessage.Text = uploadMessage.ToString();

}

catch (Exception ex)

{

upmessage.Text = ex.Message;

}

Web 窗体设计器生成的代码

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

{

MultiFileUpload();

}