上传/读取文件

  =========数据库脚本==========  

drop   table  tb_SendFile

  CREATE   TABLE  tb_SendFile
 (
    i_ID  int   identity ( 1 , 1 )  CONSTRAINT  PK_SendFile_id  PRIMARY   KEY ,
    ch_ImageID  nvarchar ( 50 ),
    img_ImageData  image ,
    ch_ImageType  nvarchar ( 50 ),
    FileLength  int
 )
 
  SELECT   *   FROM  tb_SendFile
 
  INSERT   INTO  tb_SendFile
 (
    ch_ImageID,
    img_ImageData
    
 )
   VALUES ( 1 , ' abcdee ' )
  
  DROP   PROCEDURE  sp_SendFile_Add
  CREATE   PROCEDURE  sp_SendFile_Add
  @ch_ImageID   nvarchar ( 50 ),
  @img_ImageData   image ,
  @FileLength   int ,
  @ch_ImageType   nvarchar ( 50 ),
  @id   int  OUTPUT
  AS
   INSERT   INTO  tb_SendFile
 (
    ch_ImageID,
    img_ImageData,
    ch_ImageType,
    FileLength
 )
   VALUES ( @ch_ImageID , @img_ImageData , @ch_ImageType , @FileLength )
   SELECT  
   @id = @@Identity
   GO
  
   DROP   PROCEDURE  sp_SendFile_Read
  
   CREATE   PROCEDURE  sp_SendFile_Read
  @ch_ImageID   nvarchar ( 50 ),
  @img_ImageData   image  OUTPUT,
  @ch_ImageType   nvarchar ( 50 ) OUTPUT,
  @FileLength   int  OUTPUT
   AS
   SELECT
  --  ch_ImageID,
     @img_ImageData = img_ImageData,
     @FileLength = FileLength,
     @ch_ImageType = ch_ImageType
     FROM  tb_SendFile
     WHERE (ch_ImageID = @ch_ImageID )
    
  

====写入数据库=========

<% @ Page Language="C#" AutoEventWireup="true" CodeBehind="SendFile.aspx.cs" Inherits="AssetsManager.Test.SendFile"  %>

<! 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 >
         < br  />
         < br  />
         < asp:Label  ID ="Label1"  runat ="server"  Text ="图号" ></ asp:Label >
         < asp:TextBox  ID ="TextBox1"  runat ="server" ></ asp:TextBox >
         < br  />
         < asp:Label  ID ="Label2"  runat ="server"  Text ="要上传的文件" ></ asp:Label >
         < input  id ="File1"  type ="file"  runat ="server" />< br  />
         < asp:Button  ID ="BtnOK"  runat ="server"  Text ="OK"  Width ="98px"  OnClick ="BtnOK_Click"   /></ div >
     </ form >
</ body >
</ html >

=================================================

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;
using  System.Data.SqlClient;
using  System.IO;
namespace  AssetsManager.Test
{
    public partial class SendFile : System.Web.UI.Page
    {
        SqlConnection objConn = null;
        SqlCommand objComm = null;
        protected void Page_Load(object sender, EventArgs e)
        {
        }
        protected void BtnOK_Click(object sender, EventArgs e)
        {
            string strConn = "server=.;database=AssetsManagerDB; user id=sa;password=WangJun2005";
            objConn = new SqlConnection(strConn);
            
            //-----------------
            HttpPostedFile Up_File = File1.PostedFile;
            Int32 FileLength = 0;
            FileLength = Up_File.ContentLength;
            Byte[] FileByteArray=new Byte[FileLength];
            Stream objStream = Up_File.InputStream;
            string typeValue = Up_File.ContentType;
            objStream.Read(FileByteArray, 0, FileLength);
            //---------------------------
            objComm = new SqlCommand("sp_SendFile_Add", objConn);
            objComm.CommandType = CommandType.StoredProcedure;
            SqlParameter ParameterID = new SqlParameter("@ch_ImageID", SqlDbType.NVarChar, 50);
            ParameterID.Value = TextBox1.Text.Trim().ToString();
            objComm.Parameters.Add(ParameterID);

            SqlParameter ParameterSendData = new SqlParameter("@img_ImageData", SqlDbType.Binary, FileLength);
            ParameterSendData.Value = FileByteArray;
            objComm.Parameters.Add(ParameterSendData);
            
            SqlParameter ParameterFileLength = new SqlParameter("@FileLength", SqlDbType.Int, 4);
            ParameterFileLength.Value = FileLength;
            objComm.Parameters.Add(ParameterFileLength);
            
            SqlParameter ParameterImageType = new SqlParameter("@ch_ImageType", SqlDbType.NVarChar, 50);
            ParameterImageType.Value = typeValue;
            objComm.Parameters.Add(ParameterImageType);

            SqlParameter ParameterIdReturn = new SqlParameter("@id", SqlDbType.Int, 4);
            ParameterIdReturn.Direction = ParameterDirection.Output;
            objComm.Parameters.Add(ParameterIdReturn);

            int checkValue = 0;
            try
            {
                objConn.Open();
                objComm.ExecuteNonQuery();

                checkValue = (int)ParameterIdReturn.Value;
                if (objConn != null)
                    objConn.Close();
            }
            catch (SqlException ex)
            {
                return;
            }
            if (checkValue.ToString() != "")
            {
                Response.Write("<script>alert('数据添加成功!');</script>");
            }
        }
    }
}

===========读出=================

<% @ Page Language="C#" AutoEventWireup="true" CodeBehind="ReadFile.aspx.cs" Inherits="AssetsManager.Test.ReadFile"  %>

<! 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:TextBox  ID ="TextBox1"  runat ="server" ></ asp:TextBox >
         < asp:Button  ID ="Button1"  runat ="server"  Text ="读出上传的文件"  Width ="152px"  OnClick ="Button1_Click"   /></ div >
     </ form >
</ body >
</ html >

=================================

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;
namespace  AssetsManager.Test
{
    public partial class ReadFile : System.Web.UI.Page
    {
        SqlConnection objConn = null;
        SqlCommand objComm = null;

        protected void Page_Load(object sender, EventArgs e)
        {
        }
        protected void Button1_Click(object sender, EventArgs e)
        {
            String strConn = "server=.;database=AssetsManagerDB;user id=sa;password=WangJun2005";
            objConn = new SqlConnection(strConn);
            objComm = new SqlCommand("sp_SendFile_Read", objConn);
            objComm.CommandType = CommandType.StoredProcedure;
            SqlParameter ParameterID = new SqlParameter("@ch_ImageID", SqlDbType.NVarChar, 50);
            ParameterID.Value = TextBox1.Text.Trim().ToString();
            objComm.Parameters.Add(ParameterID);

            SqlParameter ParameterImageData = new SqlParameter("@img_ImageData", SqlDbType.Binary, 718863);
            ParameterImageData.Direction = ParameterDirection.Output;
            objComm.Parameters.Add(ParameterImageData);

            SqlParameter ParameterImageType = new SqlParameter("@ch_ImageType", SqlDbType.NVarChar, 50);
            ParameterImageType.Direction = ParameterDirection.Output;
            objComm.Parameters.Add(ParameterImageType);

            SqlParameter ParameterFileLength = new SqlParameter("@FileLength", SqlDbType.Int, 4);
            ParameterFileLength.Direction = ParameterDirection.Output;
            objComm.Parameters.Add(ParameterFileLength);
            try
            {
                objConn.Open();
                objComm.ExecuteNonQuery();
                Byte[] objArray = (Byte[])ParameterImageData.Value;
                int iFileLength = (int)ParameterFileLength.Value;
                Response.ContentType = (string)ParameterImageType.Value;
                Response.OutputStream.Write(objArray, 0, iFileLength);
                Response.End();
            }
            catch (SqlException ex)
            {
                return;
            }
            finally
            {
                if (objConn != null)
                    objConn.Close();
            }
        }
    }
}