怎么显示ACCESS存储的OLE类型图片？送分
日期：2014-05-18 浏览次数：20749 次
如何显示ACCESS存储的OLE类型图片？送分
为显示ACCESS存储的OLE类型图片，使用了以下2个文件，但都没有显示出图片，网上也没找到实例，请教各位大侠指点。
VIEW3.ASPX文件：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="view3.aspx.cs" Inherits="view3" %>
<!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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Image ID="Image1" runat="server" Height="185px" ImageUrl="~/view.aspx" Width="412px" />
<asp:Image ID="Image2" runat="server" /></div>
</form>
</body>
</html>
VIEW.ASPX.CS文件代码(VIEW.ASPX没有编写代码)：
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.Drawing;
using System.ComponentModel;
using System.Data.OleDb;
using System.IO;
public partial class view : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
OleDbConnection OleConn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=.\db1.mdb");
OleConn.Open();
string ss = "select Image1 from image1 where id='26'";//读OLE对象字段IMAGE1
OleDbCommand comm = new OleDbCommand(ss, OleConn);
try
{
byte[] img = (Byte[])comm.ExecuteScalar();
Response.BinaryWrite(img);
Response.ContentType = "image/jpeg";
}
catch
{
}
OleConn.Close();
}
}
------解决方案--------------------
id='26' 你的 id 是文本类型的吗？
------解决方案--------------------
为显示ACCESS存储的OLE类型图片，使用了以下2个文件，但都没有显示出图片，网上也没找到实例，请教各位大侠指点。
VIEW3.ASPX文件：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="view3.aspx.cs" Inherits="view3" %>
<!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>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Image ID="Image1" runat="server" Height="185px" ImageUrl="~/view.aspx" Width="412px" />
<asp:Image ID="Image2" runat="server" /></div>
</form>
</body>
</html>
VIEW.ASPX.CS文件代码(VIEW.ASPX没有编写代码)：
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.Drawing;
using System.ComponentModel;
using System.Data.OleDb;
using System.IO;
public partial class view : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
OleDbConnection OleConn = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=.\db1.mdb");
OleConn.Open();
string ss = "select Image1 from image1 where id='26'";//读OLE对象字段IMAGE1
OleDbCommand comm = new OleDbCommand(ss, OleConn);
try
{
byte[] img = (Byte[])comm.ExecuteScalar();
Response.BinaryWrite(img);
Response.ContentType = "image/jpeg";
}
catch
{
}
OleConn.Close();
}
}
------解决方案--------------------
id='26' 你的 id 是文本类型的吗？
------解决方案--------------------
- C# code
public class DBHelper
{
//属性:数据库链接对象
private static OleDbConnection conn;
public static OleDbConnection Conn
{
get
{
try
{
string connstr = "Provider = Microsoft.Jet.OLEDB.4.0;Data Source=" + "" + Application.StartupPath + @"\Database.mdb";
if (conn == null)
conn = new OleDbConnection(connstr);
if (conn.State == ConnectionState.Closed)
conn.Open();
if (conn.State == ConnectionState.Broken)
{
conn.Close();
conn.Open();
}
return conn;
}
catch (Exception ex)
{
throw;
}
}
}
//方法:查询,DataReader
public static OleDbDataReader GetReader(string SqlStr)
{
OleDbCommand cmd = new OleDbCommand(SqlStr, Conn);
return cmd.ExecuteReader();
}
public static OleDbDataReader GetReader(string SqlStr, OleDbParameter[] paras)
{
OleDbCommand cmd = new OleDbCommand(SqlStr, Conn);
cmd.P
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