Question

I am trying to access a function placed in master page code-behind from another ASPX page as follows.

Main.master.cs:

public partial class Main : System.Web.UI.MasterPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
      ...
    }

    public static bool test()
    {
        return true;
    }
}

Product.aspx:

<%@ Page Language="C#" MasterPageFile="~/Main.master" EnableEventValidation="false"
AutoEventWireup="true" ValidateRequest="false" CodeFile="Product.aspx.cs" Inherits="Common_Product" Title="Product" %>
...
<asp:Label id="test123" runat="server" />

Product.aspx.cs:

using SiteABC.Accelerate;
public partial class Common_Product : SiteABC.Accelerate.SerializePageViewState   
{
    private void Page_Load(Object sender, EventArgs e)
    {
        Main cm = (Main)Page.Master; 
        test123.Text = "yo | " + cm.test();
    }
}

This results in a compiler error:

Compiler Error Message: CS0176: Member 'Main.test()' cannot be accessed with an instance reference; qualify it with a type name instead

What is wrong in this scenario?

Thank you.

Answer 1

Try this:

public partial class Main : System.Web.UI.MasterPage
{
    protected void Page_Load(object sender, EventArgs e)
    {
    ...

    }

    public bool test()
    {
        return true;
    }
}