1.建立一个aspx页面，copy html代码 <!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>Untitled Page</title></head><body> <form id="form1" runat="server"> <div> <asp:FileUpload ID="FileUpload1" runat="server" /> <asp:TextBox ID="txtUserName" runat="server"></asp:TextBox> <asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="保存" /> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="将数据库二进制图片存到磁盘" Width="207px" /></div> </form></body></html> 2.cs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 Default3 : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { } protected void Button2_Click(object sender, EventArgs e) { //把图片保存成数据库二进制形式 Stream ImageStream; string Path = FileUpload1.PostedFile.FileName;// 文件名称 int Size = FileUpload1.PostedFile.ContentLength; // 文件大小 string Type = FileUpload1.PostedFile.ContentType; // 文件类型 ImageStream = FileUpload1.PostedFile.InputStream; byte[] Content = new byte[Size]; int Status = ImageStream.Read(Content, 0, Size); SqlConnection conn = new SqlConnection(ConfigurationSettings.AppSettings["ConnectionString"]); SqlCommand comm = new SqlCommand("insert into testimage (UserName,Image,Path,Type) values(@UserName,@Image,@Path,@Type)", conn); comm.CommandType = CommandType.Text; comm.Parameters.Add("@UserName", SqlDbType.VarChar, 255).Value = txtUserName.Text; comm.Parameters.Add("@Image", SqlDbType.Image).Value = Content; comm.Parameters.Add("@Path", SqlDbType.VarChar, 255).Value = Path; comm.Parameters.Add("@Type", SqlDbType.VarChar, 255).Value = Type; conn.Open(); comm.ExecuteNonQuery(); conn.Close(); } protected void Button1_Click(object sender, EventArgs e) { //把数据库二进制图片转存到硬盘中 string connStr = ConfigurationSettings.AppSettings["ConnectionString"]; SqlConnection conn = new SqlConnection(connStr); string sql = "select * from testimage"; SqlCommand cmd = new SqlCommand(sql, conn); conn.Open(); SqlDataReader dr = cmd.ExecuteReader(); while (dr.Read()) { byte[] bytes = (byte[])dr["Image"]; FileStream fs = new FileStream(@"c:\" + dr["UserID"] + ".jpg", FileMode.Create, FileAccess.Write); fs.Write(bytes, 0, bytes.Length); fs.Flush(); fs.Close(); } dr.Close(); conn.Close(); }} 3.数据库脚本if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[TestImage]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)drop table [dbo].[TestImage]GO CREATE TABLE [dbo].[TestImage] ( [UserID] [int] IDENTITY (1, 1) NOT NULL , [UserName] [nvarchar] (500) COLLATE Chinese_PRC_CI_AS NULL , [Image] [image] NULL , [Path] [nvarchar] (500) COLLATE Chinese_PRC_CI_AS NULL , [Type] [nvarchar] (20) COLLATE SQL_Latin1_General_CP1_CI_AS NULL ) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]GO
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