How can I get the parent page from a User Control in an ASP.NET Website (not Web Application)

Question

Just as the subject asks.

EDIT 1

Maybe it\'s possible sometime while the request is being processed to store a reference to the parent page in the user contr

Answer 1

You must use NamingContainer like that:

       try
        {
            if (!string.IsNullOrWhiteSpace(TargetCtrlID))
            {
                var ctrl = NamingContainer.FindControl(TargetCtrlID);
                if(ctrl != null)
                    Console.Write("'" + ctrl.ClientID + "'");
            }
        }
        catch
        {

        }

Answer 2

Writing to Page and Master Page from Web User Control: Personally I like the user controls to be loose, but it can be done like this.

Master Page:

public partial class Second : System.Web.UI.MasterPage
    {
        public void SecondMasterString(string text)
        {
            MasterOut.Text += text;
        }
    }

Directive needed on WebForm1 : So page can write to master page

<%@  MasterType VirtualPath="~/DemoFolder/MasterPages/Second.master" %>

Methods write to page and Master Page:

public partial class WebForm1 : System.Web.UI.Page
    {
    public void SetPageOutput(string text)
        {
            // writes to page
            this.PageOut.Text = text;
        }

        public void SetMaster(string text)
        {
            // writes to Master Page
            this.Master.SecondMasterString(text);
        }
}

User Control writes to both Page and Master Page:

public partial class WebUserControl1 : System.Web.UI.UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            LegoLand.DemoFolder.MasterPages.WebForm1 page = (WebForm1)this.Parent.Page;
            page.SetMaster("** From the control to the master");
            page.SetPageOutput("From the control to the page");
        }
    }

Answer 3

Every control has a parent property that you can use to access the parent.

protected void Page_Load(object sender, EventArgs e)
{
  Response.Write(this.Parent.ID);
}

EDIT: depends on which one of the lifecycle events of the page you want to store the reference and what use to store that reference. However the reference is always available