asp.net上传图片保存到数据库的代码


数据库:保存图片的数据格式 图象二进制数据储存字段
前台:

复制代码 代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UploadWork.aspx.cs" Inherits="meishuguan.UploadWork" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
.style1
{
width: 100%;
}
.style2
{
height: 25px;
}
</style>
</head>
<body>
<script type="text/javascript">
function checkData() {
var fileName = document.getElementById("UploadImage").value;
alert(fileName);
//var fileName = document.getElementsByName("UploadImage").value;
if (fileName == "")
return;
var exName = fileName.substr(fileName.lastIndexOf(".") + 1).toUpperCase();
//alert(exName)
if (exName == "JPG" || exName == "BMP" || exName == "GIF") {
var imgpath = fileName.src;
alert(imgpath);
document.getElementById("PreviewImage").src = imgpath;
document.write(fileName);
}
else {
alert("请选择正确的图片文件")
document.getElementById("PreviewImage").value = ""
}
}
</script>
<form method="post" runat="server">
<div>
<table class="style1">
<tr>
<td class="style2">
<asp:Label ID="MessageLabel" runat="server"></asp:Label>
</td>
<td class="style2">

</td>
</tr>
<tr>
<td class="style2">
<input id="UploadImage" name = "UploadImage" type="file" runat="server" onchange="checkdata()" />
</td>
<td class="style2">

<img id="PreviewImage" alt="" src="" style="height: 80px; width: 80px" /></td>
</tr>
<tr>
<td>
<asp:Button ID="UploadButton" runat="server" Text="确定" OnClick="UploadButton_Click" />
</td>
<td>

</td>
</tr>
</table>
</div>
</form>
</body>
</html>

后台:
复制代码 代码如下:

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Data.SqlClient;
using System.Configuration;
namespace meishuguan
{
public partial class UploadWork : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void UploadButton_Click(object sender, EventArgs e)
{
HttpPostedFile UpFile = UploadImage.PostedFile;
int ImageLength = UpFile.ContentLength;
if (ImageLength == 0)
{
MessageLabel.Text = "请选择要上传的图片";
return;
}
if (ImageLength > Int32.Parse(Application["MaxImageLength"].ToString()))
{
MessageLabel.Text = "图片大小不能大于2M";
return;
}
Stream ImageStream = UpFile.InputStream;
Byte[] ImageByte = new Byte[ImageLength];
ImageStream.Read(ImageByte, 0, ImageLength);
SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ToString());
string sqlstring = "insert into [Work](MID,image,length) values(@MID,@image,@length)";
SqlCommand command = new SqlCommand(sqlstring, connection);
command.Parameters.Add("@MID", System.Data.SqlDbType.Int).Value = Session["MID"].ToString();
command.Parameters.Add("@image", System.Data.SqlDbType.Image, ImageLength).Value = ImageByte;
command.Parameters.Add("@length", System.Data.SqlDbType.Int).Value = ImageLength;
connection.Open();
command.ExecuteNonQuery();
connection.Close();
MessageLabel.Text = "图片上传成功";
}
}
}



相关阅读:
Windows Server 2008下为系统分区“减负”
VBScript教程 第十二课VBScript页面的简单样例
ASP.NET WebService中使用ASP.NET_SessionId的问题说明
Linux教程之Linux cd 命令
vbs 中调用shell.application 简单函数
康盛创想SupeSite 7.0全面开源发布
The specified CGI application misbehaved by not returning a complete set of HTTP headers
(三)文本填充,边框,边界和位置属性
怎样制作Windows Vista系统WIM镜像?
漂亮的widgets,支持换肤和后期开发新皮肤(2007-4-27已更新1.7alpha)
超强的IE背景图片闪烁(抖动)的解决办法
彻底弄明白CSS3的Media Queries(跨平台设计)
MVC+JQuery开发B/S系统:②表单绑定
Linux系统下网卡配置无效的解决方法
快速导航

Copyright © 2016 phpStudy |