public class CUploadFile
{
/*====================================================
Code By Icyplayer
E-Mail:Icyplayer@126.com
请尊重原创,使用请保留此信息
======================================================*/
/// <summary>
/// 该类实现了文件上传功能,需要指定HtmlInputFile 控件
/// 功能1:可以对文件类型进行限制
/// 功能2:可以对文件大小上限进行限制
///
/// example:
/// CUploadFile up;
/// up = new CUploadFile(HtmlInputFile1);
/// up.SvaePath = "c:\\inetpub\\wwwroot\\upload\\"; //必须指定,保存文件的路径
/// up.AllowExtFile = ".jpg;.gif;"; //允许的类型
/// up.MaxSize = 500 * 1024; //大小限制500k
/// up.NewFileName = "newfile1"; //指定新的文件名,不指定则不修改
/// int errcode = up.Start(); //开始上传
/// string errmsg = up.GetErr(errcode); //获得错误描述信息
/// Response.write(errmsg); //显示错误信息
/// </summary>
System.Web.UI.HtmlControls.HtmlInputFile _scrfile;//HtmlInputFile 控件
string _savepath = "";//保存文件的路径
string _newfilename = "";//文件重命名为
string _newextfile = "";//文件后缀
int _maxsize = 0;//文件大小限制
string _extfile = "";//允许的后缀名,用“;”分割,包含“.”,为空时允许全部文件类型
//构造函数,不指定任何数据
public CUploadFile()
{
}
//构造函数,指定了HtmlInputFile 控件
public CUploadFile(System.Web.UI.HtmlControls.HtmlInputFile scrFile)
{
this.FileSource = scrFile;
}
//构造函数,指定了HtmlInputFile 控件、保存路径,文件名不作修改
public CUploadFile(System.Web.UI.HtmlControls.HtmlInputFile scrFile, string SavePath)
{
this.FileSource = scrFile;
_savepath = SavePath;
_newfilename = scrFile.PostedFile.FileName;
}
//构造函数,指定了HtmlInputFile 控件、保存路径、新的文件名(不包含后缀)
public CUploadFile(System.Web.UI.HtmlControls.HtmlInputFile scrFile, string SavePath,string NewFileName)
{
this.FileSource = scrFile;
_savepath = SavePath;
_newfilename = NewFileName;
}
//准备就绪后,开始上传
public int Start()
{
if(_scrfile.PostedFile.ContentLength == 0)
{
return 504; //no source
}
else if((_scrfile.PostedFile.ContentLength >= _maxsize)&&(_maxsize != 0))
{
return 501; //out of the range
}
else if((_savepath == "")||(_newfilename == ""))
{
return 505; //no filename or path
}
else if(!CheckExt())
{
return 502; //ext is not allow
}
try
{
_scrfile.PostedFile.SaveAs(_savepath + _newfilename + _newextfile);
return 0;
}
catch
{
return 500; //unknow error
}
}
//检测后缀是否符合要求
private bool CheckExt()
{
if(_extfile == "") return true;
string exts = null;
exts = _extfile.Split(new char{'';''});
int i = 0;
for(i=0;i<=exts.GetUpperBound(0);i++)
{
if(exts[i] == _newextfile) return true;
}
return false;
}
//获取或指定HtmlInputFile控件
public virtual System.Web.UI.HtmlControls.HtmlInputFile FileSource
{
get
{
return _scrfile;
}
set
{
string s;
_scrfile = value;
s = _scrfile.PostedFile.FileName;
s = s.Substring(s.LastIndexOf(''.''));
_newextfile = s;
}
}
//调用start()后,若返回值