就是把图片以二进制存储到数据库，具体方法可见
1、建所需数据库和表，语句如下：
--建立数据库
create database test
--使用该数据库
use test
--建立存放图片的表
create table piclist(
id int Identity primary key,
pic Image not null
)
2、制作上传图片的模块，代码如下：
前台html代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="UpPhoto.aspx.cs" Inherits="Test_UpPhoto" %>
无标题页 后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.IO;
using System.Data.SqlClient;
public partial class Test_UpPhoto : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnAdd_Click(object sender, EventArgs e)
{
//获得图象并把图象转换为byte[]
HttpPostedFile upPhoto = UpPhoto.PostedFile;
int upPhotoLength = upPhoto.ContentLength;
byte[] PhotoArray = new Byte[upPhotoLength];
Stream PhotoStream = upPhoto.InputStream;
PhotoStream.Read(PhotoArray, 0, upPhotoLength);
//连接数据库
string ConStr = "server=(local);user id=sa;pwd=sa;database=test";
SqlConnection conn = new SqlConnection(ConStr);
string strSql = "Insert into piclist(pic) values(@pic)";
SqlCommand cmd = new SqlCommand(strSql, conn);
cmd.Parameters.Add("@pic", SqlDbType.Image);
cmd.Parameters["@pic"].Value = PhotoArray;
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
Response.Write("图片上传成功");
}
}
3、制作显示图片的模块(单独显示图片，即没用到datalist)：
后台代码：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Data.SqlClient;
using System.IO;
public partial class Test_ShowPhoto : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if(!Page.IsPostBack)
{
//连接数据库
string ConnStr = "server=(local);user id=sa;pwd=sa;database=test";
string strSql = "select * from piclist";
SqlConnection conn = new SqlConnection(ConnStr);
conn.Open();
SqlCommand cmd=new SqlCommand(strSql,conn);
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
Response.ContentType = "application/octet-stream";
Response.BinaryWrite((Byte[])reader["pic"]);
Response.Write("successful");
}
reader.Close();
conn.Close();
Response.End();
}
}
}
补充步骤3，用datalist显示图片方法：
建立两个asp.net 页面，名称为piclist.aspx和StreamImg.aspx。
piclist.aspx前台代码为：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="piclist.aspx.cs" Inherits="Test_Test" %>
无标题页 piclist.aspx后台代码为：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Data.SqlClient;
using System.IO;
public partial class Test_Test : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
//连接数据库
string ConnStr = "server=(local);user id=sa;pwd=sa;database=test";
SqlConnection sqlcon = new SqlConnection(ConnStr);
sqlcon.Open();
string sqlstr = "select id from piclist";
SqlDataAdapter MyAdapter = new SqlDataAdapter(sqlstr, sqlcon);
DataSet ds = new DataSet();
MyAdapter.Fill(ds, "tb_pic");
this.dlContent.DataSource = ds;
this.dlContent.DataBind();
sqlcon.Close();
}
}
}
StreamImg.aspx无前台代码，后台代码为：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using System.IO;
public partial class StreamImg : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//string type = Request.QueryString["pt"];
int id = Convert.ToInt32(Request.QueryString["id"]);
ShowPic(id);
}
private void ShowPic(int id)
{
//连接数据库
string ConnStr = "server=(local);user id=sa;pwd=sa;database=test";
string strSql = "select * from piclist where id='"+ id +"'";
SqlConnection conn = new SqlConnection(ConnStr);
conn.Open();
SqlCommand cmd = new SqlCommand(strSql, conn);
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
Response.ContentType = "application/octet-stream";
Response.BinaryWrite((Byte[])reader["pic"]);
Response.Write("successful");
}
reader.Close();
conn.Close();
Response.End();
}
}
我可以帮助你，你先设置我最佳答案后，我百度Hii教你。你的串号我已经记下，采纳后我会帮你制作
