Default.aspx code <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!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>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <img alt="Download pdf" height="22" src="image/pdf.gif" width="23" /> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Download Oracle9i" BackColor="#80FFFF" ForeColor="Black" Width="133px" Font-Bold="True"/> </div> </form> </body> </html> Default.aspx.cs code using System; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Button1_Click(object sender, EventArgs e) { Response.Redirect("Default2.aspx?file=" + "Oracle.pdf"); } } Default2.aspx code <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %> <!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>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> </div> </form> </body> </html> Default2.aspx.cs code using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; using System.Data.SqlClient; public partial class Default2 : System.Web.UI.Page { string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; DataSet ds = new DataSet(); SqlCommand cmd = new SqlCommand(); protected void Page_Load(object sender, EventArgs e) { if (Session["username"] == null && Session["Password"] == null) { Response.Redirect("login.aspx"); } else { string strRequest = Request.QueryString["file"]; if (strRequest != "") { //get absolute path of the file // the file is passed like a web address /images/myimage.jpg string path = Server.MapPath(strRequest); //get file object as FileInfo System.IO.FileInfo file = new System.IO.FileInfo(path); //-- if the file exists on the server if (file.Exists) //set appropriate headers { Response.Clear(); Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name); Response.AddHeader("Content-Length", file.Length.ToString()); Response.ContentType = "application/octet-stream"; // write file to browser Response.WriteFile(file.FullName); Response.End(); } else { // if file does not exist Response.Write("This file does not exist."); } } else { //nothing in the URL as HTTP GET Response.Write("Please provide a file to download."); } } } }
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login.aspx code <%@ Page Language="C#" AutoEventWireup="true" CodeFile="login.aspx.cs" Inherits="login" %> <!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>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="User Name" Width="100px"></asp:Label> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1" ErrorMessage="Required User name"></asp:RequiredFieldValidator> <br /> <asp:Label ID="Label2" runat="server" Text="Password" Width="100px"></asp:Label> <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="TextBox2" ErrorMessage="Required Password"></asp:RequiredFieldValidator> </div> <asp:Button ID="Button1" runat="server" Text="Login" onclick="Button1_Click" Width="100px" /> <asp:Label ID="Label3" runat="server"></asp:Label> </form> </body> </html> login.aspx.cs code using System; using System.Collections; using System.Configuration; using System.Data; using System.Linq; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Linq; using System.Data.SqlClient; public partial class login : System.Web.UI.Page { string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; DataSet ds = new DataSet(); SqlCommand cmd = new SqlCommand(); SqlConnection con; protected void Button1_Click(object sender, EventArgs e) { con = new SqlConnection(connStr); con.Open(); string str = "select UserName,Password from Login"; cmd = new SqlCommand(str, con); SqlDataReader reader; reader = cmd.ExecuteReader(); Session["username"] = TextBox1.Text ; Session["Password"] = TextBox2.Text; while (reader.Read()) { if ((Session["username"].ToString() == reader["UserName"].ToString()) & (Session["Password"].ToString() == reader["Password"].ToString())) { Response.Redirect("Default.aspx"); } else { Label3.Text="Invalid username or password"; } } } }
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