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ASP.NET如何存取 SQLServer数据库图片

  下面给大家一个用于C# Winform的存入、读取程序。其中不同请大家自己比较!(为了方便起见,我将数据库字段简化为二个:imgtitle和imgdata。
  
  using System;
  using System.Drawing;
  using System.Collections;
  using System.ComponentModel;
  using System.Windows.Forms;
  using System.Data;
  using System.IO;
  using System.Data.SqlClient;
  
  namespace WindowsApplication21
  {
   /// <summary>
   /// Form1 的摘要说明。
   /// </summary>
   public class Form1 : System.Windows.Forms.Form
   {
  private System.Windows.Forms.Button button1;
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;
  private string ConnectionString = "Integrated Security=SSPI;Initial Catalog=;Data Source=localhost;";
  private SqlConnection conn = null;
  private SqlCommand cmd = null;
  private System.Windows.Forms.Button button2;
  private System.Windows.Forms.PictureBox pic1;
  private System.Windows.Forms.OpenFileDialog openFileDialog1;
  private string sql = null;
  private System.Windows.Forms.Label label2;
  private string nowId=null;
  
   public Form1()
   {
  //
  // Windows 窗体设计器支持所必需的
  //
  InitializeComponent();
  conn = new SqlConnection(ConnectionString);
  
  //
  // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
  //
   }
  
   /// <summary>
   /// 清理所有正在使用的资源。
   /// </summary>
   protected override void Dispose( bool disposing )
   {
  if (conn.State == ConnectionState.Open)
   conn.Close();
  if( disposing )
  {
   if (components != null)
   {
    components.Dispose();
   }
  }
  base.Dispose( disposing );
  
   }
  
   #region Windows Form Designer generated code
   /// <summary>
   /// 设计器支持所需的方法 - 不要使用代码编辑器修改
   /// 此方法的内容。
   /// </summary>
   private void InitializeComponent()
   {
  this.button1 = new System.Windows.Forms.Button();
  this.pic1 = new System.Windows.Forms.PictureBox();
  this.button2 = new System.Windows.Forms.Button();
  this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
  this.label2 = new System.Windows.Forms.Label();
  this.SuspendLayout();
  //
  // button1
  //
  this.button1.Location = new System.Drawing.Point(0, 40);
  this.button1.Name = "button1";
  this.button1.Size = new System.Drawing.Size(264, 48);
  this.button1.TabIndex = 0;
  this.button1.Text = "加入新的图片";
  this.button1.Click += new System.EventHandler(this.button1_Click);
  //
  // pic1
  //
  this.pic1.Location = new System.Drawing.Point(280, 8);
  this.pic1.Name = "pic1";
  this.pic1.Size = new System.Drawing.Size(344, 264);
  this.pic1.TabIndex = 3;
  this.pic1.TabStop = false;
  //
  // button2
  //
  this.button2.Location = new System.Drawing.Point(0, 104);
  this.button2.Name = "button2";
  this.button2.Size = new System.Drawing.Size(264, 40);
  this.button2.TabIndex = 4;
  this.button2.Text = "从数据库中恢复图像";
  this.button2.Click += new System.EventHandler(this.button2_Click);
  //
  // openFileDialog1
  //
  this.openFileDialog1.Filter = ""图像文件(*.jpg,*.bmp,*.gif)|*.jpg|*.bmp|*.gif"";
  //
  // label2
  //
  this.label2.Location = new System.Drawing.Point(0, 152);
  this.label2.Name = "label2";
  this.label2.Size = new System.Drawing.Size(264, 48);
  this.label2.TabIndex = 5;
  //
  // Form1
  //
  this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
  this.ClientSize = new System.Drawing.Size(632, 273);
  this.Controls.AddRange(new System.Windows.Forms.Control[] {
    this.label2,
    this.button2,
    this.pic1,
    this.button1});
  this.Name = "Form1";
  this.Text = "Form1";
  this.Load += new System.EventHandler(this.Form1_Load);
  this.ResumeLayout(false);
  
   }
   #endregion

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