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I created web application, in that
1- i want hide some master page contents(ex- links to other pages(Menu), buttons)

2- i want to restrict the some page access for logged in users and non logged in users.

i have 5 pages viz homepage,register,transactions,view_transactions,dashboard

i shld restrict accessing the pages transactions,view_transactions,dashboard to non logged in users.

how to achieve this in c#

My master page code:

 <pre><%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Expense.master.cs" Inherits="Expense_System.Expense" %>

<!DOCTYPE html>

<html xmlns="">
<head runat="server">
    <link href="App_Themes/Theme1/MasterPageStyle.css" rel="stylesheet" />

    <title> Expense System</title>
    <asp:ContentPlaceHolder ID="head" runat="server">

    <form id="form1" runat="server">

            <asp:Menu ID="Menu1" runat="server" BackColor="#FFFBD6" DynamicHorizontalOffset="2" Font-Names="Verdana" Font-Size="0.8em" ForeColor="#990000" Orientation="Horizontal" RenderingMode="Table" StaticSubMenuIndent="10px" style="font-weight: 700; color: #FFFFFF; background-color: #99CCFF; font-size: xx-large; text-align: center;" Width="99%" Height="67px">
                <DynamicHoverStyle BackColor="#990000" ForeColor="White" />
                <DynamicMenuItemStyle HorizontalPadding="5px" VerticalPadding="2px" />
                <DynamicMenuStyle BackColor="#FFFBD6" />
                <DynamicSelectedStyle BackColor="#FFCC66" />
                    <asp:MenuItem NavigateUrl="~/HomePage.aspx" Text="Home Page" Value="Home Page"></asp:MenuItem>
                    <asp:MenuItem NavigateUrl="~/Register.aspx" Text="Register" Value="Register"></asp:MenuItem>
                    <asp:MenuItem NavigateUrl="~/Loginpage.aspx" Text="Login" Value="Login"></asp:MenuItem>
                <StaticHoverStyle BackColor="#990000" ForeColor="White" />
                <StaticMenuItemStyle HorizontalPadding="5px" VerticalPadding="2px" />
                <StaticSelectedStyle BackColor="#FFCC66" />

        <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">


<pre>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

namespace Expense_System
    public partial class Loginpage : System.Web.UI.Page
        protected void Page_Load(object sender, EventArgs e)


        protected void btnlogin_Click(object sender, EventArgs e)

            String strConnString = ConfigurationManager.ConnectionStrings["conString"].ConnectionString;

            SqlConnection con = new SqlConnection(strConnString);

            SqlCommand cmd = new SqlCommand("SELECT * FROM User_details WHERE [Login Id]=@loginid AND [Password]=@password",con );
            cmd.Parameters.Add("@loginid", SqlDbType.VarChar).Value = loginid.Text;
            cmd.Parameters.Add("@password", SqlDbType.VarChar).Value = pwd.Text;

            //cmd.CommandType = CommandType.StoredProcedure;


            //cmd.CommandText = "SPchkloginuser";

            //cmd.Parameters.Add("@loginid", SqlDbType.VarChar).Value = loginid.Text;
            //cmd.Parameters.Add("@password", SqlDbType.VarChar).Value = pwd.Text;
            //cmd.Connection = con;

            //SqlDataAdapter da = new SqlDataAdapter(cmd.CommandText,con);

            SqlDataAdapter da = new SqlDataAdapter(cmd);

            DataTable dt = new DataTable();
            if(dt.Rows.Count > 0)


                Response.Write("<script>alert('Invalid credentials')</script> ");

What I have tried:

I am not getting logic, i'm new to coding and language also
Updated 1-Aug-18 6:14am
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Solution 2

If you are new to ASP.NET and wanted to implement page access security, I'd suggest you to start looking at: Walkthrough: Managing Web Site Users with Roles[^]
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Solution 1

If you do not want to get into something generic, you can access controls of the master page using Master.FindControl from your content page...

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