asp.net存储图片到sql server数据库并显示
使用ASP.NET实现将图片存储到SQL server数据库中
UploadImage.aspx文件
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="UploadImage.aspx.cs" Inherits="_Default" %>
<!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>
<TABLE RUNAT="server" WIDTH="700" ALIGN="left" ID="Table1" cellpadding="0" cellspacing="0" border="0">
<TR>
<TD>上传图片(选择你要上传的图片)</TD>
<TD>
<asp:FileUpload ID="UP_FILE" runat="server" />
</TD>
</TR>
<TR>
<TD>
</TD>
<TD>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /></TD>
</TR>
</TABLE>
</div>
</form>
</body>
</html>
UploadImage.aspx.cs文件
using System;
using System.Data;
using System.Configuration;
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 _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Int32 FileLength = UP_FILE.PostedFile.ContentLength;
Byte[] myByteArray = new Byte[FileLength];
Stream myStream = UP_FILE.PostedFile.InputStream;
myStream.Read(myByteArray, 0, FileLength);
SqlConnection conn = new SqlConnection("server=.;database=testdb;uid=sa;pwd=698887;");
conn.Open();
String sqlcmd = "insert into ImageStore(ImageData) values(@Image)";
SqlCommand CmdObj = new SqlCommand(sqlcmd, conn);
SqlParameter ImagePara = new SqlParameter();
ImagePara.ParameterName = "@Image";
ImagePara.SqlDbType = SqlDbType.Image;
ImagePara.Value = myByteArray;
CmdObj.Parameters.Add(ImagePara);
CmdObj.ExecuteNonQuery();
conn.Close();
myStream.Close();
}
}
ReadImage.aspx.cs文件
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;
using System.Drawing;
public partial class ReadImage : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
SqlConnection conn = new SqlConnection("server=.;database=testdb;uid=sa;pwd=698887;");
conn.Open();
String sqlcmd = "select * from ImageStore where ImageID=7";
SqlCommand cmd = new SqlCommand(sqlcmd,conn);
SqlDataReader sqlReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
sqlReader.Read();
byte[] ImageData = (byte[])sqlReader["ImageData"];
Response.BinaryWrite(ImageData);
Response.End();
conn.Close();
}
}
Default.aspx文件
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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="115px" ImageUrl="~/ReadImage.aspx"
Width="220px" /> </div>
</form>
</body>
</html>
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