showfile.aspx.cs

来自「ASP C#代码实例 适合初学人士学习使用」· CS 代码 · 共 59 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 Example_11_10
{
	/// <summary>
	/// Summary description for ShowFile.
	/// </summary>
	public class ShowFile : System.Web.UI.Page
	{
		private void Page_Load(object sender, System.EventArgs e)
		{
			string sql="SELECT * FROM Files WHERE FileID = '" + Request.QueryString["FileID"] + "'";
			SqlConnection connection = new SqlConnection(MyTypeFile.SQLCONNECTIONSTRING);
			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["FileData"]);
			}
			dr.Close();
			connection.Close();

		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);
		}
		#endregion
	}
}