getfile.aspx.cs

来自「asp做的新闻系统」· CS 代码 · 共 62 行

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

namespace study.uploadimage
{
	/// <summary>
	/// imgview 的摘要说明。
	/// </summary>
	public class imgview : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox text1;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			SqlConnection myDSN = new SqlConnection("user id=sa;password=;initial catalog=web;data source=localhost;Connect Timeout=30");
			
			myDSN.Open();

			int imgid = int.Parse(Request.QueryString["id"]);
			string sqlText = "SELECT img_name, img_data, img_contenttype FROM image where img_pk=" + imgid;
			Trace.Write(sqlText);
			SqlCommand MyCommand = new SqlCommand (sqlText, myDSN);
			SqlDataReader dr = MyCommand.ExecuteReader();
			if(dr.Read())
			{
				Response.ContentType = (dr["img_contenttype"].ToString());
				Response.BinaryWrite((byte[])dr["img_data"]);
			}			
			myDSN.Close();
		}
		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <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.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	}
}