C# 通用文件上传类_asp.net教程-查字典教程网

1、Upfile.aspx：

复制代码代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Upfile.aspx.cs" Inherits="Inc_Upfile" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd";>

</head>

<body>

<div>

<asp:FileUpload ID="FileUpload1" runat="server" />

<asp:Button ID="Button1" runat="server" Text="上传文件" CssClass="btn2" />

<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label></div>

</form>

</body>

</html>

Upfile.aspx.cs

代码

复制代码代码如下:

using System;

using System.Data;

using System.Configuration;

using System.Collections;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class Inc_Upfile : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

//Cut By 梦溪苑。

}

protected void Button1_Click(object sender, EventArgs e)

{

AllSheng.upload UpFiles = new AllSheng.upload();

//HttpPostedFile File = FileUpload1.PostedFile;

// AllSheng.UploadObj.PhotoSave("/", FileUpload1);

HttpFileCollection files = HttpContext.Current.Request.Files;

UpFiles.Path = "../UpLoadfiles";

String ReStr= UpFiles.SaveAs(files).ToString();

Label1.Text = ReStr;

UpFiles = null;

}

3、类文件：

代码

复制代码代码如下:

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

/**//// <summary>

/// Cls_Upfile 的摘要说明

/// </summary>

///

namespace AllSheng

{

public class upload

{

变量#region 变量

System.Web.HttpPostedFile postedFile;

protected string localFileName;//原文件名(含扩展名)

protected string localFileExtension;//原扩展名

protected long localFileLength;//原文件大小

protected string localFilePath;//原文件路径

protected string saveFileName;//保存的文件名(含扩展名)

protected string saveFileExtension;//保存的扩展名

//protected long saveFileLength;//保存的文件大小

protected string saveFilePath;//保存文件的服务器端的完整路径

protected string saveFileFolderPath;//保存文件的服务器端的文件夹路径

private string path = null;

private string fileType = null;

private int sizes = 0;

#endregion

upload():初始化变量#region upload():初始化变量

/**//// <summary>

/// 初始化变量

/// </summary>

public upload()

{

path = @"uploadimages"; //上传路径

fileType = "jpg|gif|bmp|jpeg|png|rar|doc";

sizes = 200; //传文件的大小,默认200KB

}

#endregion

设置传入的值:Path/Sizes/FileType#region 设置传入的值:Path/Sizes/FileType

/**//// <summary>

/// 设置上传路径,如:uploadimages

/// </summary>

public string Path

{

set

{

path = @"" + value + @"";

}

/**//// <summary>

/// 设置上传文件大小,单位为KB

/// </summary>

public int Sizes

{

set

{

sizes = value;

}

/**//// <summary>

/// 设置上传文件的类型,如:jpg|gif|bmp

/// </summary>

public string FileType

{

set

{

fileType = value;

}

#endregion

SaveAs()上传文件#region SaveAs()上传文件

public string SaveAs(System.Web.HttpFileCollection files)

{

string myReturn = "";

try

{

for (int iFile = 0; iFile < files.Count; iFile++)

{

postedFile = files[iFile];

//获得文件的上传的路径

localFilePath = postedFile.FileName;

//判断上传文件路径是否为空

if (localFilePath == null || localFilePath == "")

{

//message("您没有上传数据呀，是不是搞错了呀!");

//break;

continue;

}

else

{

判断文件大小#region 判断文件大小

//获得上传文件的大小

localFileLength = postedFile.ContentLength;

//判断上传文件大小

if (localFileLength >= sizes * 1024)

{

message("上传的图片不能大于" + sizes + "KB");

break;

}

#endregion

文件夹#region 文件夹

//获取保存文件夹路径

saveFileFolderPath = getSaveFileFolderPath(path);

#endregion

文件名#region 文件名

//获得原文件名（含扩展名）

localFileName = System.IO.Path.GetFileName(postedFile.FileName);

saveFileName = DateTime.UtcNow.ToString("yyyy" + "MM" + "dd" + "HH" + "mm" + "ss" + "ffffff");//"yyyy"+"MM"+"dd"+"HH"+"mm"+"ss"+"ffffff"

#endregion

扩展名#region 扩展名

//获取原文件扩展名

localFileExtension = getFileExtension(localFileName);

//如果为真允许上传,为假则不允许上传

if (localFileExtension == "")

{

message("目前本系统支持的格式为:" + fileType);

}

//得到保存文件的扩展名,可根据需要更改扩展名

saveFileExtension = localFileExtension;

#endregion

//得到保存文件的完整路径

saveFilePath = saveFileFolderPath + saveFileName + saveFileExtension;

postedFile.SaveAs(saveFilePath);

myReturn = myReturn + ((myReturn == "" || myReturn == null) ? "" : "|") + path.TrimStart(new char[] { '' }) + saveFileName + saveFileExtension;

//以下对文章的内容进行一些加工

System.Web.HttpContext.Current.Response.Write("<script>parent.Article_Content___Frame.FCK.EditorDocument.body.innerHTML+='<img src=" + saveFileName + saveFileExtension + " "+" border=0 />'</SCRIPT>");

}

catch

{

//异常

message("出现未知错误！");

myReturn = null;

}

return myReturn;

}

#endregion

getSaveFileFolderPath( ):获得保存的文件夹的物理路径#region getSaveFileFolderPath( ):获得保存的文件夹的物理路径

/**//// <summary>

/// 获得保存的文件夹的物理路径

/// 返回保存的文件夹的物理路径,若为null则表示出错

/// </summary>

/// <param name="format">保存的文件夹路径或者格式化方式创建保存文件的文件夹，如按日期"yyyy"+"MM"+"dd":20060511</param>

/// <returns>保存的文件夹的物理路径,若为null则表示出错</returns>

private string getSaveFileFolderPath(string format)

{

string mySaveFolder = null;

try

{

string folderPath = null;

//以当前时间创建文件夹,

//!!!!!!!!!!!!以后用正则表达式替换下面的验证语句!!!!!!!!!!!!!!!!!!!

if (format.IndexOf("yyyy") > -1 || format.IndexOf("MM") > -1 || format.IndexOf("dd") > -1 || format.IndexOf("hh") > -1 || format.IndexOf("mm") > -1 || format.IndexOf("ss") > -1 || format.IndexOf("ff") > -1)

{

//以通用标准时间创建文件夹的名字

folderPath = DateTime.UtcNow.ToString(format);

mySaveFolder = System.Web.HttpContext.Current.Server.MapPath(".") + @"" + folderPath + @"";

}

else

{

mySaveFolder = System.Web.HttpContext.Current.Server.MapPath(".") + format;

}

System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(mySaveFolder);

//判断文件夹否存在,不存在则创建

if (!dir.Exists)

{

dir.Create();

}

catch

{

message("获取保存路径出错");

}

return mySaveFolder;

}

#endregion

getFileExtension( ):获取原文件的扩展名#region getFileExtension( ):获取原文件的扩展名

/**//// <summary>

/// 获取原文件的扩展名,返回原文件的扩展名(localFileExtension),该函数用到外部变量fileType,即允许的文件扩展名.

/// </summary>

/// <param name="myFileName">原文件名</param>

/// <returns>原文件的扩展名(localFileExtension);若返回为null,表明文件无后缀名;若返回为"",则表明扩展名为非法.</returns>

private string getFileExtension(string myFileName)

{

string myFileExtension = null;

//获得文件扩展名

myFileExtension = System.IO.Path.GetExtension(myFileName);//若为null,表明文件无后缀名;

//分解允许上传文件的格式

if (myFileExtension != "")

{myFileExtension = myFileExtension.ToLower();//转化为小写

}

string[] temp = fileType.Split('|');

//设置上传的文件是否是允许的格式

bool flag = false;

//判断上传的文件是否是允许的格式

foreach (string data in temp)

{

if (("." + data) == myFileExtension)

{

flag = true;

break;

}

if (!flag)

{

myFileExtension = "";//不能设置成null,因为null表明文件无后缀名;

}

return myFileExtension;

}

#endregion

message( ):弹出消息框#region message( ):弹出消息框

/**//// <summary>

/// 弹出消息框,显示内容(msg),点击"确定"后页面跳转到该路径(url)

/// </summary>

/// <param name="msg">显示内容</param>

/// <param name="url">跳转路径</param>

private void message(string msg, string url)

{

System.Web.HttpContext.Current.Response.Write("<script language=javascript>alert('" + msg + "');window.location='" + url + "'</script>");

}

/**//// <summary>

/// 弹出消息框,显示内容(msg),无跳转

/// </summary>

/// <param name="msg">显示内容</param>

private void message(string msg)

{

System.Web.HttpContext.Current.Response.Write("<script language=javascript>alert('" + msg + "');</script>");

}

#endregion

}