本文介绍了一个使用ASP.NET实现的简单文件上传组件，该组件能够将文件上传至指定目录，并以特定格式重命名文件，同时提供了文件上传结果的反馈。
<%@ page Language = "C#" debug = "true" %><%@ Import Namespace = "System.IO" %><script language = "C#" runat = "server">
/**//*------------------------------
文件上传模块用于上传到当前网页目录/upload下文件保存形式：说明-年月日-文件大小.扩展名(C)ZhangLi 2005
--------------------------------*/public void uploadFile(object sender , EventArgs E) ...{
if(inputFile.PostedFile.ContentLength*smem.Value.Length>0) ...{string strSaveDir = "./upload/";string strName = inputFile.PostedFile.FileName;int intExt = strName.LastIndexOf(".");string strExt = strName.Substring(intExt);DateTime datNow = DateTime.Now; string strNewName =smem.Value+"_"+datNow.Year.ToString()+"-"+ datNow.Month.ToString()+"-"+ datNow.Day.ToString()+"_"+datNow.Hour.ToString()+"-" +datNow.Minute.ToString()+"-"+datNow.Second.ToString()+"_" +inputFile.PostedFile.ContentLength.ToString() + strExt; int intPath = strName.LastIndexOf("/");inputFile.PostedFile.SaveAs(Server.MapPath(strSaveDir + strNewName)); labelUpResult.Text = "文件上传成功！";labelFileName.Text = "文件源：" + strName;labelFileExt.Text = "文件类型：" + inputFile.PostedFile.ContentType + "( " + strExt + " )";labelFileSize.Text = "文件大小：" + (inputFile.PostedFile.ContentLength / 1024).ToString() + " K Byte(s)";} else ...{labelUpResult.Text = "请将上述项目填写完整！";labelFileName.Text = "";labelFileExt.Text = "";labelFileSize.Text = "";
}}</script><html><head><title>上传文件</title><link href="css/style.css" rel="stylesheet" type="text/css"><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><style type="text/css"><!--body ...{ margin-left: 0px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px;}--></style></head><body><table width="670" border="0"> <tr> <td align="left" valign="bottom">请填写以下信息</td> </tr></table><hr align="left"><div align="center"><table width="100%" border="0" cellpadding="0" cellspacing="6" style="border-collapse: collapse" bordercolor="#eeeeee" id="AutoNumber1"><form id="formFile" method="post" action="" enctype="multipart/form-data" runat="server"><tr> <td>说明 <input type="text" name="smem" id="smem" runat="server"></td></tr><tr> <td>文件 <input type="file" id="inputFile" name="inputFile" runat="server" size="64"></td></tr><tr><td><input type="button" value="Upload" OnServerClick="uploadFile" id="Button1" name="Button1" runat="server"></td></tr><tr><td align="center"><asp:Label id="labelUpResult" runat="server" text="" font-bold="True" forecolor="#FF0000"/><br><asp:Label id="labelFileName" runat="server" text="" font-bold="True" forecolor="#FF0000"/><br><asp:Label id="labelFileExt" runat="server" text="" font-bold="True" forecolor="#FF0000"/><br><asp:Label id="labelFileSize" runat="server" text="" font-bold="True" forecolor="#FF0000"/><br></td></tr></form></table></body></html>
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