个人学习代码保存:例5.利用标准FileUpload单文件上传

前台代码：Default.aspx

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

<!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" OnClick="Button1_Click" /></div>

</form>

</body>

</html>

后台代码：Default.aspx.cs

using System;

using System.Data;

using System.Configuration;

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 _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

if (FileUpload1.HasFile)

{

string FileName = FileUpload1.FileName;

//取得文件类型

string strFileExtend = FileName.Substring(FileName.LastIndexOf(".")+1);

string[] NoFileExtend ={ "exe","php","asp"};

bool Flag = true;

for (int i = 0; i < NoFileExtend.Length; i++)

{

if (strFileExtend.Equals(NoFileExtend[i]))

{

Flag = false;

}

if (Flag)

{

string strFilePath = string.Format("files/{0}.{1}", DateTime.Now.ToString("mmhhddss"), strFileExtend);

string path = Server.MapPath(strFilePath);

FileUpload1.SaveAs(path);

Page.ClientScript.RegisterStartupScript(this.GetType(), "Startup", "<script>alert('文件上传成功');</script>");

Response.Write("格式化后的地址为："+strFilePath+"文件类型为："+strFileExtend);

}

else

{

Page.ClientScript.RegisterStartupScript(this.GetType(), "Startup", "<script>alert('" + string.Format("不能上传{0}格式文件", strFileExtend) + "');</script>");

}

else

{

Page.ClientScript.RegisterStartupScript(this.GetType(),"Startup","<script>alert('文件不能为空');</script>");

}

posted on 2008-01-13 01:16 wangbin 阅读(322) 评论(0) 收藏举报