如何显示数据库中Image类型的图片

1.数据库表结构

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if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Person]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
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drop table [dbo].[Person]
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GO
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CREATE TABLE [dbo].[Person] (
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[PersonID] [int] IDENTITY (1, 1) NOT NULL ,
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[PersonImage] [image] NULL ,
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[PersonImageType] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL
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) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
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GO
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2.显示图片的代码,把下面的代码随便放到一个aspx页面的pageload事件中

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void GetImageSrcFromDB()
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{
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string strImageID = Request.QueryString["id"];
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SqlConnection myConnection = new SqlConnection("Data Source=.;Initial Catalog=mxh;User Id=sa;Password=sa;");
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SqlCommand myCommand = new SqlCommand("Select PersonImageType, PersonImage from Person Where PersonID="
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+ strImageID, myConnection);
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try
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{
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myConnection.Open();
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SqlDataReader myDataReader;
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myDataReader = myCommand.ExecuteReader(CommandBehavior.CloseConnection);
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if(myDataReader.Read())
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{
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Response.Clear();
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//Response.ContentType = myDataReader["PersonImageType"].ToString();
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Response.BinaryWrite((byte[])myDataReader["PersonImage"]);
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}
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myConnection.Close();
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}
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catch (SqlException SQLexc)
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{
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Response.Write(SQLexc.ToString());
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}
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//Response.End();
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}

3.构造数据，通过上传的方式把图片存入数据库，下面的代码放入一个上传按钮的单击事件中，页面上在加一个上传控件

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//获得图象并把图象转换为byte[]
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HttpPostedFile upPhoto=UpPhoto.PostedFile;
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int upPhotoLength=upPhoto.ContentLength;
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byte[] PhotoArray=new Byte[upPhotoLength];
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Stream PhotoStream=upPhoto.InputStream;
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PhotoStream.Read(PhotoArray,0,upPhotoLength);
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//连接数据库
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SqlConnection conn=new SqlConnection();
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conn.ConnectionString="Data Source=localhost;Database=mxh;User Id=sa;Pwd=sa";
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string strSql="Insert into Person(PersonImage,PersonImageType) values(@FImage,'jpeg')";
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SqlCommand cmd=new SqlCommand(strSql,conn);
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cmd.CommandType=CommandType.Text ;
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//如果你希望不使用存储过程来添加图片把上面四句代码改为：
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//SqlCommand cmd=new SqlCommand(strSql,conn);
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cmd.Parameters.Add("@FImage",SqlDbType.Image);
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cmd.Parameters["@FImage"].Value=PhotoArray;
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conn.Open();
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cmd.ExecuteNonQuery();
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conn.Close();

4.显示图片的代码，建立一个新的aspx页面，然后显示图片

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<asp:Image id="Image1" runat="server" ImageUrl="ReadImage.aspx?id=1"></asp:Image>