showfile.aspx.cs

20071024上传下载SQl

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 WebApplication1
{
	/// <summary>
	/// ShowFile 的摘要说明。
	/// </summary>
	public class ShowFile : System.Web.UI.Page
	{
		private void Page_Load(Object sender, EventArgs e) 
		{
			string sql="SELECT * FROM TestFiles WHERE ID = '" + Request.QueryString["ID"] + "'";
			SqlConnection connection = new SqlConnection("Server=.;uid=sa;pwd=;Database=TestUploadFile");
			SqlCommand command = new SqlCommand(sql, connection);
			connection.Open();
			SqlDataReader dr = command.ExecuteReader();
			if(dr.Read())
			{
				Response.Clear();
				Response.AddHeader("Content-Type",dr["FileType"].ToString());
				Response.BinaryWrite((byte[])dr["MyFile"]);
			}
			dr.Close();
			connection.Close();
		}
		#region Web 窗体设计器生成的代码
		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
	}
}