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aspx.cs上传文件

2015-11-23 23:06 615 查看

aspx.cs文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void Button1_Click(object sender, EventArgs e)
{
//处理文件名
string filename = DateTime.Now.ToString("yyyyMMddHHmmssms")+ FileUpload1.FileName;

//把相当路径变为绝对路径
string path = Server.MapPath(@"images\"+filename);

//上传
FileUpload1.SaveAs(path);
}
protected void Button2_Click(object sender, EventArgs e)
{
//处理文件名
string filename = DateTime.Now.ToString("yyyyMMddHHmmssms") + PicLoad.FileName;

//把相当路径变为绝对路径
string path = Server.MapPath(@"images\" + filename);

//上传
PicLoad.SaveAs(path);
}
}

aspx文件

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

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>

<asp:FileUpload ID="FileUpload1" runat="server" />
 <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="上传" />
<br />
<br />
<br />
<br />
<a href="images/201510141440384038Chjhj#.doc">下载</a>
<br />
<br />
<br />
<br />

<div id="localImag" style="width: 300px; height: 200px">
<img id="preview" alt="预览图片" src="images/qiye.png" width="300" height="200" />
<asp:FileUpload ID="PicLoad" Width="300px" Height="200px" style="position:relative; top:-200px; opacity:0" runat="server" onchange="javascript:setImagePreview(this,localImag,preview);"></asp:FileUpload>

</div>
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="上传" />

<script type="text/javascript">
function setImagePreview(docObj, localImagId, imgObjPreview) {
if (docObj.files && docObj.files[0]) {
//火狐下，直接设img属性
imgObjPreview.style.display = 'block';
imgObjPreview.style.width = '300px';
imgObjPreview.style.height = '200px';

//火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式
imgObjPreview.src = window.URL.createObjectURL(docObj.files[0]);
}
else {
//IE下，使用滤镜
docObj.select();
var imgSrc = document.selection.createRange().text;

//必须设置初始大小
localImagId.style.width = "300px";
localImagId.style.height = "200px";

//图片异常的捕捉，防止用户修改后缀来伪造图片
try {
localImagId.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";
localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc;
}
catch (e) {
alert("您上传的图片格式不正确，请重新选择!");
return false;
}
imgObjPreview.style.display = 'none';
document.selection.empty();
}
return true;
}
</script>

</div>
</form>
</body>
</html>

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