aspx.cs上传文件

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" />
&nbsp;<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>

 

posted @ 2015-11-23 23:06  其实哥很宅  阅读(888)  评论(0)  编辑  收藏  举报