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标题: ASP.NET将物件序列化成Binary储存至DB or File [打印本页]

作者: superadmin 时间: 2008-7-13 13:53
标题: ASP.NET将物件序列化成Binary储存至DB or File
最近有人在讨论这个问题..小弟很少玩这个东西..就到网路上找了一些资源..教大家如何将物件序列化成Binary Data..然后储存到资料库或档桉裡..
当然可以序列化..就一定可以反序列化了...其实序列化格式不一定要是Binary Data..也可以是XML or SOAP Data的...

首先准备一个DB,结构如下：

接下来就是代码了

以下为引用的内容：

asp.net(c#)

SerializingObjects.aspx

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SerializingObjects.aspx.cs" Inherits="SerializingObjects" %>

<!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>Serializing Objects</title>
</head>
<body>
<form id="form1" runat="server">
<div>
      <asp:DropDownList ID="ddlType" runat="server">
         <asp:ListItem Value="0">资料库</asp:ListItem>
         <asp:ListItem Value="1">档桉</asp:ListItem>
      </asp:DropDownList>
      <asp:Button ID="btnLoad" runat="server" OnClick="btnLoad_Click" Text="读取" />

      <asp:Label ID="Label1" runat="server" Text="编号："></asp:Label>
      <asp:TextBox ID="txbId" runat="server"></asp:TextBox>


      <asp:Label ID="Label2" runat="server" Text="名称："></asp:Label>
      <asp:TextBox ID="txbName" runat="server"></asp:TextBox>


      <asp:Label ID="Label3" runat="server" Text="电话："></asp:Label>
      <asp:TextBox ID="txbTel" runat="server"></asp:TextBox>

      <asp:Label ID="Label4" runat="server" Text="地址："></asp:Label>
      <asp:TextBox ID="txbAddress" runat="server"></asp:TextBox>
      <asp:Button ID="btnAdd" runat="server" OnClick="btnAdd_Click" Text="新增" /></div>
</form>
</body>
</html>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SerializingObjects.aspx.cs" Inherits="SerializingObjects" %>

<!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>Serializing Objects</title>
</head>
<body>
<form id="form1" runat="server">
<div>
      <asp:DropDownList ID="ddlType" runat="server">
         <asp:ListItem Value="0">资料库</asp:ListItem>
         <asp:ListItem Value="1">档桉</asp:ListItem>
      </asp:DropDownList>
      <asp:Button ID="btnLoad" runat="server" OnClick="btnLoad_Click" Text="读取" /><br />
      <asp:Label ID="Label1" runat="server" Text="编号："></asp:Label>
      <asp:TextBox ID="txbId" runat="server"></asp:TextBox>
      <br />
      <asp:Label ID="Label2" runat="server" Text="名称："></asp:Label>
      <asp:TextBox ID="txbName" runat="server"></asp:TextBox>
      <br />
      <asp:Label ID="Label3" runat="server" Text="电话："></asp:Label>
      <asp:TextBox ID="txbTel" runat="server"></asp:TextBox><br />
      <asp:Label ID="Label4" runat="server" Text="地址："></asp:Label>
      <asp:TextBox ID="txbAddress" runat="server"></asp:TextBox>
      <asp:Button ID="btnAdd" runat="server" OnClick="btnAdd_Click" Text="新增" /></div>
</form>
</body>
</html>

SerializingObjects.aspx.cs

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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.Runtime.Serialization.Formatters.Binary;

public partial class SerializingObjects : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void btnAdd_Click(object sender, EventArgs e)
{
      if (this.ddlType.SelectedIndex == 0)
      {
         SaveToDB();
      }
      else
      {
         SaveToFile();
      }
}

//存至资料库(Binary Serialization)
protected void SaveToDB()
{
      using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString))
      {
         using (MemoryStream ms = new MemoryStream())
         {
            conn.Open();

            Member mem = new Member();
            mem.Id = this.txbId.Text;
            mem.Name = this.txbName.Text;
            mem.Tel = this.txbTel.Text;
            mem.Address = this.txbAddress.Text;

            BinaryFormatter b = new BinaryFormatter();
            b.Serialize(ms, mem);
            ms.Seek(0, 0);

            string sql = "insert into member values(@data)";
            SqlCommand cmd = new SqlCommand(sql, conn);
            cmd.Parameters.Add("@data", SqlDbType.Binary).Value = ms.ToArray();
            cmd.ExecuteNonQuery();

         }
      }
}

//由资料库读取(Binary Serialization)
protected void LoadFromDB()
{
      using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString))
      {
         using (MemoryStream ms = new MemoryStream())
         {
            conn.Open();

            string sql = "select data from member";
            SqlCommand cmd = new SqlCommand(sql, conn);
            SqlDataAdapter adapter = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            adapter.Fill(dt);

            if (dt.Rows.Count > 0)
            {
                  byte[] buffer = (byte[])dt.Rows[dt.Rows.Count-1][0];
                  ms.Write(buffer, 0, buffer.Length);
                  ms.Seek(0, 0);
                  BinaryFormatter b = new BinaryFormatter();
                  Member mem = new Member();
                  mem = (Member)b.Deserialize(ms);

                  this.txbId.Text = mem.Id;
                  this.txbName.Text = mem.Name;
                  this.txbTel.Text = mem.Tel;
                  this.txbAddress.Text = mem.Address;
            }
         }
      }
}

//存至档桉(Binary Serialization)
protected void SaveToFile()
{
      string path = Server.MapPath("member.dat");
      using (Stream s = File.Open(path, FileMode.Create))
      {
         Member mem = new Member();
         mem.Id = this.txbId.Text;
         mem.Name = this.txbName.Text;
         mem.Tel = this.txbTel.Text;
         mem.Address = this.txbAddress.Text;

         BinaryFormatter b = new BinaryFormatter();
         b.Serialize(s, mem);
      }
}

//由档桉读取(Binary Serialization)
protected void LoadFromFile()
{
      string path = Server.MapPath("member.dat");
      if (File.Exists(path))
      {
         using (Stream s = File.Open(path, FileMode.Open))
         {
            BinaryFormatter b = new BinaryFormatter();
            Member mem = new Member();
            mem = (Member)b.Deserialize(s);

            this.txbId.Text = mem.Id;
            this.txbName.Text = mem.Name;
            this.txbTel.Text = mem.Tel;
            this.txbAddress.Text = mem.Address;
         }
      }
}

protected void btnLoad_Click(object sender, EventArgs e)
{
      if (this.ddlType.SelectedIndex == 0)
      {
         LoadFromDB();
      }
      else
      {
         LoadFromFile();
      }
}
}


[Serializable]
public class Member
{
private string _id = string.Empty;
private string _name = string.Empty;
private string _tel = string.Empty;
private string _address = string.Empty;

public Member()
{

}

public Member(string id, string name,string tel,string address)
{
      _id = id;
      _name = name;
      _tel = tel;
      _address = address;
}

public string Id
{
      get { return _id; }
      set { _id = value; }
}

public string Name
{
      get { return _name; }
      set { _name = value; }
}

public string Tel
{
      get { return _tel; }
      set { _tel = value; }
}

public string Address
{
      get { return _address; }
      set { _address = value; }
}

}
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.Runtime.Serialization.Formatters.Binary;

public partial class SerializingObjects : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void btnAdd_Click(object sender, EventArgs e)
{
      if (this.ddlType.SelectedIndex == 0)
      {
         SaveToDB();
      }
      else
      {
         SaveToFile();
      }
}

//存至资料库(Binary Serialization)
protected void SaveToDB()
{
      using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString))
      {
         using (MemoryStream ms = new MemoryStream())
         {
            conn.Open();

            Member mem = new Member();
            mem.Id = this.txbId.Text;
            mem.Name = this.txbName.Text;
            mem.Tel = this.txbTel.Text;
            mem.Address = this.txbAddress.Text;

            BinaryFormatter b = new BinaryFormatter();
            b.Serialize(ms, mem);
            ms.Seek(0, 0);

            string sql = "insert into member values(@data)";
            SqlCommand cmd = new SqlCommand(sql, conn);
            cmd.Parameters.Add("@data", SqlDbType.Binary).Value = ms.ToArray();
            cmd.ExecuteNonQuery();

         }
      }
}

//由资料库读取(Binary Serialization)
protected void LoadFromDB()
{
      using (SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString))
      {
         using (MemoryStream ms = new MemoryStream())
         {
            conn.Open();

            string sql = "select data from member";
            SqlCommand cmd = new SqlCommand(sql, conn);
            SqlDataAdapter adapter = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            adapter.Fill(dt);

            if (dt.Rows.Count > 0)
            {
                  byte[] buffer = (byte[])dt.Rows[dt.Rows.Count-1][0];
                  ms.Write(buffer, 0, buffer.Length);
                  ms.Seek(0, 0);
                  BinaryFormatter b = new BinaryFormatter();
                  Member mem = new Member();
                  mem = (Member)b.Deserialize(ms);

                  this.txbId.Text = mem.Id;
                  this.txbName.Text = mem.Name;
                  this.txbTel.Text = mem.Tel;
                  this.txbAddress.Text = mem.Address;
            }
         }
      }
}

//存至档桉(Binary Serialization)
protected void SaveToFile()
{
      string path = Server.MapPath("member.dat");
      using (Stream s = File.Open(path, FileMode.Create))
      {
         Member mem = new Member();
         mem.Id = this.txbId.Text;
         mem.Name = this.txbName.Text;
         mem.Tel = this.txbTel.Text;
         mem.Address = this.txbAddress.Text;

         BinaryFormatter b = new BinaryFormatter();
         b.Serialize(s, mem);
      }
}

//由档桉读取(Binary Serialization)
protected void LoadFromFile()
{
      string path = Server.MapPath("member.dat");
      if (File.Exists(path))
      {
         using (Stream s = File.Open(path, FileMode.Open))
         {
            BinaryFormatter b = new BinaryFormatter();
            Member mem = new Member();
            mem = (Member)b.Deserialize(s);

            this.txbId.Text = mem.Id;
            this.txbName.Text = mem.Name;
            this.txbTel.Text = mem.Tel;
            this.txbAddress.Text = mem.Address;
         }
      }
}

protected void btnLoad_Click(object sender, EventArgs e)
{
      if (this.ddlType.SelectedIndex == 0)
      {
         LoadFromDB();
      }
      else
      {
         LoadFromFile();
      }
}
}

[Serializable]
public class Member
{
private string _id = string.Empty;
private string _name = string.Empty;
private string _tel = string.Empty;
private string _address = string.Empty;

public Member()
{

}

public Member(string id, string name,string tel,string address)
{
      _id = id;
      _name = name;
      _tel = tel;
      _address = address;
}

public string Id
{
      get { return _id; }
      set { _id = value; }
}

public string Name
{
      get { return _name; }
      set { _name = value; }
}

public string Tel
{
      get { return _tel; }
      set { _tel = value; }
}

public string Address
{
      get { return _address; }
      set { _address = value; }
}

}

执行结果：

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