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copied!<p><strong>Answer to question 1:</strong></p> <p>IMHO, it really doesn't matter. I would say it's cleaner to use <code>Literal</code> when you don't need a label pointing to a field of a form, but, well, most people use <code>Label</code> in every case. Or output text directly with <code><% %></code>.</p> <p><strong>Answer to question 2:</strong></p> <p>There is no need to use sessions for this. Instead, use <code>this.Master</code> to access the Masterpage directly. You can then update the value of the label from your page.</p> <p>For example, do something like:</p> <pre><code>public class SiteMaster : MasterPage { public string StatusText { get; set; } } </code></pre> <p>and:</p> <pre><code>public class HomePage : Page { public void ChangeStatus(newStatus) { // Remember to cast this.Master to the class you use for the masterpage. ((SiteMaster)this.Master).StatusText = newStatus; } } </code></pre> <hr> <p>To answer your last questions:</p> <blockquote> <p>Do I need to copy this code onto every page in my site?</p> </blockquote> <p>Yes. <em>Unless</em> every page inherits from a parent class which inherits from <code>Page</code> class.</p> <blockquote> <p>What is SiteMaster?</p> </blockquote> <p><code>SiteMaster</code> is the class <em>I</em> gave to my master page. It could be <code>Template</code>, <code>Global</code>, or <em>whatever you want</em>.</p> <p>If it might be helpful, here's a full example of the thing:</p> <p><img src="https://i.stack.imgur.com/hNpE2.png" alt="Class diagram"></p> <p>File <strong>Site.Master</strong>:</p> <pre><code><%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Site.master.cs" Inherits="Demos.StackOverflow.MasterPages.SiteMaster" %> <!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>Sample code for StackOverflow</title> </head> <body> <form id="form1" runat="server"> <a href="Default.aspx">Home page</a> | <a href="Products.aspx">Products</a> <div> <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server"> </asp:ContentPlaceHolder> </div> <div id="Status"> <%= this.StatusText %> </div> </form> </body> </html> </code></pre> <p>File <strong>Site.Master.cs</strong>:</p> <pre><code>namespace Demos.StackOverflow.MasterPages { using System; using System.Web.UI; // Here's my SiteMaster class. public partial class SiteMaster : MasterPage { public string StatusText { get; set; } protected void Page_Load(object sender, EventArgs e) { } } } </code></pre> <p>File <strong>PageWithStatus</strong>:</p> <pre><code>namespace Demos.StackOverflow.MasterPages { using System.Web.UI; // This parent class inherits System.Web.UI.Page. This avoids code duplication. public class PageWithStatus : Page { protected void ChangeStatus(string newStatus) { ((SiteMaster)this.Master).StatusText = newStatus; } } } </code></pre> <p>File <strong>Default.aspx</strong>:</p> <pre><code><%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Demos.StackOverflow.MasterPages.DefaultPage" %> <asp:Content ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> <asp:Button runat="server" Text="Button" OnClick="DefaultButton_Click" /> </asp:Content> </code></pre> <p>File <strong>Default.aspx.cs</strong>:</p> <pre><code>namespace Demos.StackOverflow.MasterPages { using System; // Here, we inherits from PageWithStatus, not from Page. public partial class DefaultPage : PageWithStatus { protected void Page_Load(object sender, EventArgs e) { } protected void DefaultButton_Click(object sender, EventArgs e) { this.ChangeStatus("Done!"); } } } </code></pre> <p>File <strong>Products.aspx</strong>:</p> <pre><code><%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Products.aspx.cs" Inherits="Demos.StackOverflow.MasterPages.ProductsPage" %> <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" runat="server"> <asp:Button runat="server" Text="Buy" onclick="BuyButton_Click" /><br /> <asp:Button runat="server" Text="Sell" onclick="SellButton_Click" /> </asp:Content> </code></pre> <p>File <strong>Products.aspx.cs</strong>:</p> <pre><code>namespace Demos.StackOverflow.MasterPages { using System; // Here, we inherits from PageWithStatus, not from Page. public partial class ProductsPage : PageWithStatus { protected void Page_Load(object sender, EventArgs e) { } protected void BuyButton_Click(object sender, EventArgs e) { this.ChangeStatus("The product is purchased."); } protected void SellButton_Click(object sender, EventArgs e) { this.ChangeStatus("The product is sold."); } } } </code></pre>

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